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{{Short description|Branch of primates}} | |||
{{Other uses}} | |||
{{Distinguish-redirect|Hominoid|Hominid}} | |||
{{For|an explanation of very similar terms|Hominidae}} | |||
{{About|the branch of primates}} | |||
{{pp-vandalism|small=yes}} | |||
{{pp-move-indef}} | {{pp-move-indef}} | ||
{{ |
{{Use dmy dates|date=December 2019}} | ||
{{Use dmy dates|date=July 2011}} | |||
{{automatic taxobox | {{automatic taxobox | ||
| name = Hominoids |
| name = Hominoids<br/>Apes | ||
| fossil_range = |
| fossil_range = ]-] | ||
| image = 013 Alpha male chimpanzee at Kibale forest National Park Photo by Giles Laurent.jpg | |||
| image = Orang Utan, Semenggok Forest Reserve, Sarawak, Borneo, Malaysia.JPG | |||
| image_caption = ] ('' |
| image_caption = Male ] (''Pan troglodytes'') | ||
| taxon = Hominoidea | | taxon = Hominoidea | ||
| authority = ], 1825<ref>{{Cite journal |last=Gray |first=J. E. |title=An outline of an attempt at the disposition of Mammalia into tribes and families, with a list of the genera apparently appertaining to each tribe. |url=http://www.rhinoresourcecenter.com/index.php?s=1&act=pdfviewer&id=1223371163&folder=122 |journal=Annals of Philosophy |series=New Series |volume=10 |pages=337–344 |access-date=27 April 2022 |archive-date=27 April 2022 |archive-url=https://web.archive.org/web/20220427185350/http://www.rhinoresourcecenter.com/index.php?s=1&act=pdfviewer&id=1223371163&folder=122 |url-status=live }}</ref> | |||
| authority = ], 1825 | |||
| type_species = '']'' | | type_species = '']'' | ||
| type_species_authority = ], ] | | type_species_authority = ], ] | ||
| subdivision_ranks = |
| subdivision_ranks = Families | ||
| subdivision = | | subdivision = * †] | ||
* †] | |||
{{extinct}}]<br/> | |||
†] |
* †] | ||
†] |
* †] | ||
* ] | |||
†]<br> | |||
* ] | |||
]<br> | |||
] | |||
}} | }} | ||
'''Apes''' ('''Hominoidea''') are a ] of ] tailless ] ]s native to ] and ]. They are the sister group of ]s, together forming the ] clade. They are distinguished from other primates by a wider degree of freedom of motion at the shoulder joint as evolved by the influence of ]. There are two extant branches of the superfamily Hominoidea: the ]s, or lesser apes; and the ]s, or ]. | |||
'''Apes''' (collectively '''Hominoidea''' {{IPAc-en|h|ɒ|m|ᵻ|ˈ|n|ɔɪ|d|i|.|ə}}) are a ] of ] ]s native to ] and ] (though they were more widespread in Africa, most of Asia, and Europe in prehistory, and counting humans are found globally). Apes are more closely related to ]s (family Cercopithecidae) than to the ]s (Platyrrhini) with both Old World monkeys and apes placed in the ] ]. Apes do not have tails due to a mutation of the ].<ref>{{Cite bioRxiv |last1=Xia |first1=Bo |last2=Zhang |first2=Weimin |last3=Wudzinska |first3=Aleksandra |last4=Huang |first4=Emily |last5=Brosh |first5=Ran |last6=Pour |first6=Maayan |last7=Miller |first7=Alexander |last8=Dasen |first8=Jeremy S. |last9=Maurano |first9=Matthew T. |last10=Kim |first10=Sang Y. |last11=Boeke |first11=Jef D. |date=2021-09-16 |title=The genetic basis of tail-loss evolution in humans and apes |biorxiv=10.1101/2021.09.14.460388}}</ref><ref name="CNN-20240323">{{cite news |last=Weisberger |first=Mindy |title=Why don't humans have tails? Scientists find answers in an unlikely place |url=https://www.cnn.com/2024/03/23/world/humans-tails-genetic-mutation-junk-dna-scn/index.html |date=March 23, 2024 |work=] |url-status=live |archiveurl=https://archive.today/20240324031927/https://www.cnn.com/2024/03/23/world/humans-tails-genetic-mutation-junk-dna-scn/index.html |archivedate=March 24, 2024 |accessdate=March 24, 2024 }}</ref> In traditional and non-scientific use, the term ''ape'' can include tailless primates taxonomically considered Cercopithecidae (such as the ] and ]), and is thus not equivalent to the scientific ] Hominoidea. There are two extant branches of the superfamily Hominoidea: the ]s, or lesser apes; and the ]s, or ]. | |||
* The family Hylobatidae, the lesser apes, include four genera and a total of sixteen species of gibbon, including the ] and the ], all native to ]. They are highly arboreal and ] on the ground. They have lighter bodies and smaller social groups than great apes. | |||
* The family ], the lesser apes, include four genera and a total of 20 species of gibbon, including the ] and the ], all native to ]. They are highly arboreal and ] on the ground. They have lighter bodies and smaller social groups than great apes. | |||
* The family ], known collectively as the ], includes ]s, ]s, ]s, and ]s;<ref name=Dixson1981p13/>{{efn|name=DawkinsUse1|Although Dawkins is clear that he uses "apes" for Hominoidea, he also uses "great apes" in ways which exclude humans. Thus in {{Cite book |last=Dawkins |first=R. |year=2005 |title=The Ancestor's Tale |edition=p/b |publication-place=London |publisher=Phoenix (Orion Books) |isbn=978-0-7538-1996-8 |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}: "Long before people thought in terms of evolution ... great apes were often confused with humans" (p. 114); "gibbons are faithfully monogamous, unlike the great apes which are our closer relatives" (p. 126).}}<ref>{{Cite journal |last=Grehan |first=J.R. |year=2006 |title=Mona Lisa Smile: The morphological enigma of human and great ape evolution |journal=Anatomical Record |volume=289B |pages=139–157 |doi=10.1002/ar.b.20107 |issue=4 |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}</ref><ref name=Benton2005p371/> alternatively, this family ] is also known as the ]. There are seven extant species of great apes: two in the orangutans (genus ''Pongo''), two in the gorillas (genus ''Gorilla''), two in the chimpanzees (genus ''Pan''), and a single extant species, ''Homo sapiens'', of modern humans (genus ''Homo'').<ref name=MSW3>{{MSW3 Groves|pages=178–184|id=12100751}}</ref><ref name=Goodman2>{{cite journal | journal = Journal of Molecular Evolution | year = 1990 | volume = 30 | pages = 260–266 | title = Primate evolution at the DNA level and a classification of hominoids |author1=M. Goodman |author2=D. A. Tagle |author3=D. H. Fitch |author4=W. Bailey |author5=J. Czelusniak |author6=B. F. Koop |author7=P. Benson |author8=J. L. Slightom | doi = 10.1007/BF02099995 | pmid = 2109087 | issue = 3 | ref = harv}}</ref> | |||
* The family ] (''hominids''), the great apes, include four genera comprising three extant species of ]s and their subspecies, two extant species of ]s and their subspecies, two extant species of ] and their subspecies, and ]s in a single extant subspecies.{{efn|name=DawkinsUse1|Although Dawkins is clear that he uses "apes" for Hominoidea, he also uses "great apes" in ways which exclude humans. Thus in {{Harvnb|Dawkins|2005}}: "Long before people thought in terms of evolution ... great apes were often confused with humans" (p. 114); "gibbons are faithfully monogamous, unlike the great apes which are our closer relatives" (p. 126).}}{{Sfn|Dixson|1981|pp=13}}<ref>{{Cite journal |last=Grehan |first=J. R. |year=2006 |title=Mona Lisa smile: the morphological enigma of human and great ape evolution |journal=Anatomical Record |volume=289B |pages=139–157 |doi=10.1002/ar.b.20107 |pmid=16865704 |issue=4 |doi-access=free}}</ref><ref name=Benton2005p371/> | |||
Except for gorillas and humans, hominoids are agile climbers of trees. Apes eat a variety of plant and animal foods, with the majority of food being plant foods, which can include fruits, leaves, stalks, roots and seeds, including nuts and grass seeds. Human diets are sometimes substantially different from that of other hominoids due in part to the development of technology and a wide range of habitation. | |||
Members of the superfamily Hominoidea are called '''hominoids'''—which term is not to be confused with ]s, the family of ]s; or with the ]s, the tribe of humans also known as ]; or with other very similar terms of primate taxa. (Compare ].) | |||
All non-human hominoids are rare and threatened with ]ion. The main threat is ], though some populations are further imperiled by hunting. The great apes of Africa are also facing threat from the ].<ref>{{cite news |url=https://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |title=Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn |last=Rush |first=J. |date=23 January 2015 |work=The Independent |access-date=26 March 2015 |archive-url=https://web.archive.org/web/20150330035716/http://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |archive-date=30 March 2015 |url-status=dead}}</ref> | |||
Recent evidence has changed our understanding of the relationships between the hominoids, especially regarding the human lineage; and the traditionally used terms have become somewhat confused. Competing approaches re methodology and terminology are found among current scientific sources. See below, ] and see ] for discussions of the changes in scientific classification and terminology regarding hominoids. | |||
== Name and terminology == | |||
Some, or – recently – all, hominoids are also called "apes", but the term is used broadly and has several different senses within both popular and scientific settings. "Ape" has been used as a synonym for "]" or for naming any primate with a human-like appearance, particularly those without a tail.<ref name=EB11Ape/> Thus the ], a kind of monkey, is popularly called the "Barbary ape". Biologists have traditionally used the term "ape" to mean a member of the superfamily Hominoidea ''other than'' humans,<ref name=Dixson1981p13/> but more recently to mean ''all'' members of Hominoidea. So "ape"—not to be confused with "great ape"—now becomes another word for '''hominoid''' ''including'' humans.<ref name=Benton2005p371/>{{efn|name=DawkinsUse2|{{Harvnb|Dawkins|2005}}; for example "ll apes except humans are hairy" (p. 99), "mong the apes, gibbons are second only to humans" (p. 126).}} | |||
{{Human timeline}} | |||
"Ape", from Old English ''apa'', is a word of uncertain origin.<!---->{{efn|reference=The hypothetical Proto-Germanic form is given as ''*apōn'' (F. Kluge, ''Etymologisches Wörterbuch der Deutschen Sprache'' (2002), online version, s.v. ""; V. Orel, ''A handbook of Germanic etymology'' (2003), s.v. "" or as *''apa(n)'' (''Online Etymology Dictionary'' (2001–2014), s.v. ""; M. Philippa, F. Debrabandere, A. Quak, T. Schoonheim & N. van der Sijs, ''Etymologisch woordenboek van het Nederlands'' (2003–2009), s.v. ""). Perhaps ultimately derived from a non-Indo-European language, the word might be a direct borrowing from Celtic, or perhaps from Slavic, although in both cases it is also argued that the borrowing, if it took place, went in the opposite direction.}} The term has a history of rather imprecise usage—and of comedic or punning usage in the vernacular. Its earliest meaning was generally of any non-human anthropoid primate, as is still the case for its cognates in other Germanic languages.{{efn|reference="Any simian known on the Mediterranean during the Middle Ages; monkey or ape"; cf. ''ape-ward'': "a juggler who keeps a trained monkey for the amusement of the crowd." (Middle English Dictionary, s.v. "").}}{{Sfn|Terry|1977|pp=3}} | |||
Later, after the term "]" had been introduced into English, "ape" was specialized to refer to a tailless (therefore exceptionally human-like) primate.{{Sfn|Terry|1977|pp=3–4}} Thus, the term "ape" obtained two different meanings, as shown in the 1911 ] entry: it could be used as a synonym for "monkey" and it could denote the tailless human-like primate in particular.<ref name="EB1911">{{Cite EB1911|wstitle=Ape|volume=2|page=160}}</ref> | |||
Some, or recently all, hominoids are also called "apes", but the term is used broadly and has several different senses within both popular and scientific settings. "Ape" has been used as a synonym for "monkey" or for naming any primate with a human-like appearance, particularly those without a tail.<ref name="EB1911"/> Biologists have traditionally used the term "ape" to mean a member of the superfamily Hominoidea ''other than'' humans,{{Sfn|Dixson|1981|pp=13}} but more recently to mean ''all'' members of Hominoidea. So "ape"—not to be confused with "great ape"—now becomes another word for '''hominoid''' ''including'' humans.<ref name=Benton2005p371/>{{efn|name=DawkinsUse2|{{Harvnb|Dawkins|2005}}; for example "ll apes except humans are hairy" (p. 99), "mong the apes, gibbons are second only to humans" (p. 126).}} | |||
Except for gorillas and humans, hominoids are agile climbers of trees. Their diet is best described as ] and ], consisting mainly of fruit, nuts, seeds, including grass seeds, leaves, and in some cases other animals, either hunted or scavenged, or (solely in the case of the humans) farmed—along with anything else available and easily digested.<ref>{{cite web|url=http://www.newscientist.com/article/dn14926-loving-bonobos-have-a-carnivorous-dark-side.html#.VHXsaclWqUU|title=Loving bonobos have a carnivorous dark side|last=Callaway|first=Ewen|date=13 October 2006|work=]|accessdate=26 November 2014}}</ref><ref>{{cite web|url=http://www.nature.com/news/humans-are-becoming-more-carnivorous-1.14282|title=Humans are becoming more carnivorous|last=Hoag|first=Hannah|date=2 December 2013|work=]|accessdate=26 November 2014}}</ref> | |||
The taxonomic term ''hominoid'' is derived from, and intended as encompassing, the '']s,'' the family of ]s. Both terms were introduced by Gray (1825).<ref>{{Cite journal |last=Gray |first=JE |title=An outline of an attempt at the disposition of Mammalia into tribes and families, with a list of the genera apparently appertaining to each tribe. |url=http://www.rhinoresourcecenter.com/index.php?s=1&act=pdfviewer&id=1223371163&folder=122 |journal=Annals of Philosophy |series=New Series |volume=10 |pages=337–344 |access-date=27 April 2022 |archive-date=27 April 2022 |archive-url=https://web.archive.org/web/20220427185350/http://www.rhinoresourcecenter.com/index.php?s=1&act=pdfviewer&id=1223371163&folder=122 |url-status=live }}</ref> The term '']s'' is also due to Gray (1824), intended as including the human lineage (see also ], ]). | |||
Most non-human hominoids are rare or ]. The chief threat to most of the endangered species is loss of tropical ] habitat, though some populations are further imperiled by hunting for ]. The great apes of Africa are also facing threat from the ]. Currently considered to be the greatest threat to survival of African apes, ] is responsible for the death of at least one third of the species since 1990.<ref>{{cite news|url=http://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html|title=Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn|last=Rush|first=James|date=23 January 2015|work=The Independent|accessdate=26 March 2015}}</ref> | |||
The distinction between apes and monkeys is complicated by the traditional ] of monkeys: Apes emerged as a sister group of Old World Monkeys in the ], which are a sister group of New World Monkeys. Therefore, ], apes, catarrhines and related contemporary extinct groups such as ] are monkeys as well, for any consistent definition of "monkey". "Old World monkey" may also legitimately be taken to be meant to include all the catarrhines, including apes and extinct species such as '']'',<ref name="OsmanHill1953">{{Cite book |title=Primates Comparative Anatomy and Taxonomy I—Strepsirhini |last=Osman Hill |first=W. C. |publisher=Edinburgh University Press |year=1953 |series=Edinburgh Univ Pubs Science & Maths, No 3 |pages=53 |oclc=500576914 |author-link=William Charles Osman Hill}}</ref><ref>{{Cite book |url=https://archive.org/details/generalintroduct00martrich |title=A General Introduction to the Natural History of Mammiferous Animals, With a Particular View of the Physical History of man, and the More Closely Allied Genera of the Order Quadrumana, or Monkeys |last=Martin |first=W. C. L. |publisher=Wright and Co. printers |year=1841 |location=London |pages=340, 361}}</ref><ref>{{Cite journal |last=Geoffroy Saint-Hilaire |first=M. É. |date=1812 |title=Tableau des quadrumanes, ou des animaux composant le premier ordre de la classe des Mammifères |url=https://www.biodiversitylibrary.org/item/23270#page/107/mode/1up |journal=Annales du Muséum d'Histoire Naturelle |location=Paris |volume=19 |pages=85–122 |access-date=16 July 2019 |archive-date=27 March 2019 |archive-url=https://web.archive.org/web/20190327091031/https://www.biodiversitylibrary.org/item/23270#page/107/mode/1up |url-status=live }}</ref><ref name="Bugge1974">{{Cite journal |last=Bugge |first=J. |date=1974 |title=Chapter 4 |journal=Cells Tissues Organs |volume=87 |issue=Suppl. 62 |pages=32–43 |doi=10.1159/000144209 |issn=1422-6405}}</ref>{{citation needed|date=October 2016}} in which case the apes, Cercopithecoidea and ''Aegyptopithecus'' emerged within the Old World monkeys. | |||
==Historical and modern terminology== | |||
{{Human timeline}} | |||
"Ape", from Old English ''apa'', is a word of uncertain origin.<!---->{{efn|reference=The hypothetical Proto-Germanic form is given as ''*apōn'' (F. Kluge, ''Etymologisches Wörterbuch der Deutschen Sprache'' (2002), online version, s.v. ""; V. Orel, ''A handbook of Germanic etymology'' (2003), s.v. "" or as *''apa(n)'' (''Online Etymology Dictionary'' (2001–2014), s.v. ""; M. Philippa, F. Debrabandere, A. Quak, T. Schoonheim & N. van der Sijs, ''Etymologisch woordenboek van het Nederlands'' (2003–2009), s.v. ""). Perhaps ultimately derived from a non-Indo-European language, the word might be a direct borrowing from Celtic, or perhaps from Slavic, although in both cases it is also argued that the borrowing, if it took place, went in the opposite direction.}} The term has a history of rather imprecise usage—and of comedic or punning usage in the vernacular. Its earliest meaning was generally of any non-human anthropoid primate,<!----><ref name=EB11Ape/>{{efn|reference="Any simian known on the Mediterranean during the Middle Ages; monkey or ape"; cf. ''ape-ward'': "a juggler who keeps a trained monkey for the amusement of the crowd." (Middle English Dictionary, s.v. "").}}<!----> as is still the case for its cognates in other Germanic languages.<ref>M.W. Terry, "Use of common and scientific nomenclature to designate laboratory primates". In: A.M. Schrier (ed.), ''Behavioral Primatology: Advances in Research and Theory'', Volume 1 (Hillsdale, N.J.; Lawrence Erlbaum, 1977), pp. 1-32; 3</ref> Later, after the term "monkey" had been introduced into English, "ape" was specialized to refer to a tailless (therefore exceptionally human-like) primate.<ref>M.W. Terry, "Use of common and scientific nomenclature to designate laboratory primates". In: A.M. Schrier (ed.), ''Behavioral Primatology: Advances in Research and Theory'', Volume 1 (Hillsdale, N.J.; Lawrence Erlbaum, 1977), pp. 1-32; 3-4</ref> Two tailless species of ] still have common names using "ape": the ] of North Africa (introduced into ]), ''Macaca sylvanus'', and the Sulawesi black ape or ], ''M. nigra''. Thus, the term "ape" obtained two different meanings, as shown in the 1910 ] entry: it could be used as a synonym for "monkey" and it could denote the tailless humanlike primate in particular.<ref name=EB11Ape>{{Cite encyclopedia |last=Anon. |year=1911 |title=Ape |encyclopedia=Encyclopædia Britannica |publication-place=New York |publisher=Encyclopædia Britannica |url=https://archive.org/stream/encyclopaediabri02chisrich#page/160/mode/2up |accessdate=10 July 2011 |edition=11th |volume=XIX |ref=harv }}</ref> | |||
The primates called "apes" today became known to Europeans after the 18th century. As zoological knowledge developed, it became clear that taillessness occurred in a number of different and otherwise distantly related ]. Sir ] was one of those primatologists who developed the idea that there were trends in primate evolution and that the extant members of the order could be arranged in an "ascending series", leading from "monkeys" to "apes" to humans. Within this tradition "ape" came to refer to all members of the superfamily Hominoidea except humans.{{Sfn|Dixson|1981|pp=13}} As such, this use of "apes" represented a ] grouping, meaning that, even though all species of apes were descended from a common ancestor, this grouping did ''not'' include all the descendant species, because humans were excluded from being among the apes.{{efn|Definitions of ] vary; for the one used here see e.g. {{Harvnb|Stace|2010|pp=106}}}} | |||
The distinction between apes and ] is complicated by the traditional ] of ]: Apes emerged as a sister group of Old World Monkeys in the ], which are a sister group of New World Monkeys. Therefore, ], apes, catarrhines and related contempory extinct groups such as ]a are monkeys as well, for any consistent definition of "monkey". "Old World Monkey" may also legitimately be taken to be meant to include all the catarrhines, including apes and extinct species such as ],{{citation needed|date=October 2016}} in which case the apes, Cercopithecoidea and Aegyptopithecus emerged within the Old World Monkeys. | |||
Traditionally, the English-language ] "apes" does not include humans, but phylogenetically, humans ('']'') form part of the family Hominidae within Hominoidea. Thus, there are at least three common, or traditional, uses of the term "ape": non-specialists may not distinguish between "monkeys" and "apes", that is, they may use the two terms interchangeably; or they may use "ape" for any tailless monkey or non-human hominoid; or they may use the term "ape" to just mean the non-human hominoids. | |||
The primates called "apes" today became known to Europeans after the 18th century. As ] knowledge developed, it became clear that taillessness occurred in a number of different and otherwise distantly related ]. Sir ] was one of those ] who developed the idea that there were trends in primate evolution and that the extant members of the order could be arranged in an ".. ascending series", leading from "monkeys" to "apes" to humans. Within this tradition "ape" came to refer to all members of the superfamily Hominoidea except humans.<ref name=Dixson1981p13>{{Cite book |last=Dixson |first=A.F. |year=1981 |title=The Natural History of the Gorilla |publication-place=London |publisher=Weidenfeld & Nicholson |isbn=978-0-297-77895-0 |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}, p. 13</ref> As such, this use of "apes" represented a ] grouping, meaning that, even though all species of apes were descended from a common ancestor, this grouping did ''not'' include all the descendant species, because humans were excluded from being among the apes.{{efn|Definitions of ] vary; for the one used here see e.g. {{Cite journal |last=Stace |first=Clive A. |year=2010a |title=Classification by molecules: What's in it for field botanists? |journal=Watsonia |volume=28 |pages=103–122 |url=http://www.watsonia.org.uk/Wats28p103.pdf |accessdate=7 February 2010 |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}, p. 106}} | |||
Modern taxonomy aims for the use of ] groups for taxonomic classification;<ref name="SpringerHolley2011">{{cite book |author1=Springer |author2=D. H. |title=An Introduction to Zoology: Investigating the Animal World |date=1 July 2011 |publisher=Jones & Bartlett Publishers |isbn=978-0-7637-5286-6 |pages=536 |quote=Through careful study taxonomists today struggle to eliminate polyphyletic and paraphyletic groups and taxons, reclassifying their members into appropriate monophyletic taxa}}</ref>{{efn|Definitions of ] vary; for the one used here see e.g. {{Harvnb|Mishler|2009|pp=114}}}} | |||
===Great and lesser=== | |||
Some literature may now use the common name "ape" to mean all members of the superfamily Hominoidea, including humans. For example, in his 2005 book, Benton wrote "The apes, Hominoidea, today include the gibbons and orang-utan ... the gorilla and chimpanzee ... and humans".<ref name=Benton2005p371>{{Cite book |last=Benton |first=M. J. |year=2005 |title=Vertebrate Palaeontology |publisher=Wiley-Blackwell |isbn=978-0-632-05637-8 |url=https://books.google.com/books?id=SyJO3vpCk8AC |access-date=10 July 2011 |archive-date=3 April 2023 |archive-url=https://web.archive.org/web/20230403152612/https://books.google.com/books?id=SyJO3vpCk8AC |url-status=live }}, p. 371</ref> Modern biologists and primatologists refer to apes that are not human as "non-human" apes. Scientists broadly, other than paleoanthropologists, may use the term "]" to identify ], replacing the term "]". See ]. | |||
The ] of the superfamily Hominoidae shows the descendant relationships of the extant hominoids that are broadly accepted today.<ref name=Goodman2/> The grouping traditionally called apes is bracketed from the right. For each clade, it is indicated approximately how many million of years ago (Mya) newer extant clades radiated.{{citation needed|date=October 2016}} | |||
{{Barlabel|style=font-size:90%|labelwidth=11|align=centre | |||
See below, ], for a discussion of changes in scientific classification and terminology regarding hominoids. | |||
|size=6 | |||
|at1=3.5|color1=purple|label1=non-human apes | |||
== Evolution == | |||
|cladogram= | |||
{{Unreferenced section|date=September 2021}} | |||
{{Cladex|style=width:auto | |||
|label1= Hominoidea (20.4 Mya) | |||
Although the hominoid fossil record is still incomplete and fragmentary, there is now enough evidence to provide an outline of the ]. Previously, the divergence between humans and other extant hominoids was thought to have occurred 15 to 20 million years ago, and several species of that time period, such as '']'', were once thought to be ]s and possible ancestors of humans. But, later fossil finds indicated that ''Ramapithecus'' was more closely related to the orangutan; and new biochemical evidence indicates that the last common ancestor of humans and non-hominins (that is, the chimpanzees) occurred between 5 and 10 million years ago, and probably nearer the lower end of that range (more recent); see ] (CHLCA). | |||
|1={{Cladex | |||
|label1= ] (15.7 Mya) | |||
== Taxonomic classification and phylogeny == | |||
|1={{Cladex | |||
{{main|List of hominoids}} | |||
|label1= ] (8.8 Mya) | |||
|1={{Cladex | |||
Genetic analysis combined with fossil evidence indicates that hominoids diverged from the ]s about 25 million years ago (mya), near the ].<ref>{{cite web |url=https://www.science.org/content/article/fossils-may-pinpoint-critical-split-between-apes-and-monkeys |title=Fossils may pinpoint critical split between apes and monkeys |date=15 May 2013 |access-date=30 June 2022 |archive-date=16 December 2022 |archive-url=https://web.archive.org/web/20221216065413/https://www.science.org/content/article/fossils-may-pinpoint-critical-split-between-apes-and-monkeys |url-status=live }}</ref><ref>{{cite journal |last1=Rossie |first1=J. B. |last2=Hill |first2=A. |year=2018 |title=A new species of ''Simiolus'' from the middle Miocene of the Tugen Hills, Kenya |journal=Journal of Human Evolution |volume=125 |pages=50–58 |doi=10.1016/j.jhevol.2018.09.002 |pmid=30502897|bibcode=2018JHumE.125...50R |s2cid=54625375 }}</ref><ref>{{cite journal |last1=Rasmussen |first1=D. T. |last2=Friscia |first2=A. R. |last3=Gutierrez |first3=M. |display-authors=3 |last4=Kappelman |first4=J. |last5=Miller |first5=E. R. |last6=Muteti |first6=S. |last7=Reynoso |first7=D. |last8=Rossie |first8=J. B. |last9=Spell |first9=T. L. |last10=Tabor |first10=N. J. |last11=Gierlowski-Kordesch |first11=E. |last12=Jacobs |first12=B. F. |last13=Kyongo |first13=B. |last14=Macharwas |first14=M. |last15=Muchemi |first15=F. |year=2019 |title=Primitive Old World monkey from the earliest Miocene of Kenya and the evolution of cercopithecoid bilophodonty |journal=Proceedings of the National Academy of Sciences |volume=116 |issue=13 |pages=6051–6056 |doi=10.1073/pnas.1815423116 |pmid=30858323 |pmc=6442627 |bibcode=2019PNAS..116.6051R |doi-access=free}}</ref> The gibbons split from the rest about 18 mya, and the hominid splits happened 14 mya (''Pongo''),<ref>{{Cite journal |last1=Alba |first1=D. M. |last2=Fortuny |first2=J. |last3=Moyà-Solà |first3=S. |date=2010 |title=Enamel thickness in the Middle Miocene great apes ''Anoiapithecus'', ''Pierolapithecus'' and ''Dryopithecus'' |journal=Proceedings of the Royal Society of London B: Biological Sciences |volume=277 |issue=1691 |pages=2237–2245 |doi=10.1098/rspb.2010.0218|issn=0962-8452 |pmc=2880156 |pmid=20335211}}</ref> 7 mya (''Gorilla''), and 3–5 mya (''Homo'' & ''Pan'').<ref>{{Cite journal |last1=Grabowski |first1=M. |last2=Jungers |first2=W. L. |date=2017 |title=Evidence of a chimpanzee-sized ancestor of humans but a gibbon-sized ancestor of apes |journal=Nature Communications |volume=8 |issue=1 |pages=880 |bibcode=2017NatCo...8..880G |doi=10.1038/s41467-017-00997-4|issn=2041-1723 |pmc=5638852 |pmid=29026075}}</ref><!-- note, this figure of 3-5 mya for the Homo/Pan split differs from the figure in the article ], which says 6.5-7.4 mya or alternatively 5.4-6.3 mya--> In 2015, a new genus and species were described, '']'', which lived 11.6 mya, and appears to predate the split between Hominidae and Hylobatidae.<ref>{{cite web |url=http://phys.org/news/2015-10-primate-species-root-tree-extant.html |title=A new primate species at the root of the tree of extant hominoids |date=29 October 2015 |access-date=29 October 2015 |archive-date=29 October 2015 |archive-url=https://web.archive.org/web/20151029203847/http://phys.org/news/2015-10-primate-species-root-tree-extant.html |url-status=live }}</ref><ref name=":0">{{Cite journal |last1=Nengo |first1=I. |last2=Tafforeau |first2=P. |last3=Gilbert |first3=C. C. |display-authors=3 |last4=Fleagle |first4=J. G. |last5=Miller |first5=E. R. |last6=Feibel |first6=C. |last7=Fox |first7=D. L. |last8=Feinberg |first8=J. |last9=Pugh |first9=K. D. |year=2017 |title=New infant cranium from the African Miocene sheds light on ape evolution |url=http://discovery.ucl.ac.uk/1570349/1/Spoor_Nengo-et-al_text.pdf |journal=Nature |volume=548 |issue=7666 |pages=169–174 |bibcode=2017Natur.548..169N |doi=10.1038/nature23456|pmid=28796200|s2cid=4397839 |access-date=15 July 2019 |archive-url=https://web.archive.org/web/20180722103154/http://discovery.ucl.ac.uk/1570349/1/Spoor_Nengo-et-al_text.pdf |archive-date=22 July 2018 |url-status=dead}}</ref>{{Sfn|Dixson|1981|p=16}}<ref name="Benton2005p371" />{{clarify |date=July 2019 |reason=It's not clear which of these sources contains the cladogram shown, and it would be SYNTH to combine cladograms from different sources}} | |||
|label1= ] (6.3 Mya) | |||
{{Clade|{{Clade | |||
|1={{Cladex | |||
|label1='''(29)''' | |||
|1=humans (genus ''Homo'')|barbegin2=purple | |||
|1={{Clade | |||
|2=chimpanzees (genus ''Pan'')|bar2=purple | |||
|1=] (†28) | |||
}} | |||
|label2='''] (24)''' | |||
|2=gorillas (genus ''Gorilla'')|bar2=purple | |||
|
|2={{Clade | ||
|1=] (†19) | |||
|2=orangutans (genus ''Pongo'')|bar2=purple | |||
|2=''']''' | |||
}} | |||
}} | |||
|2=gibbons (family Hylobatidae)|barend2=purple | |||
}} | |||
|label2='''Hominoidea (30)''' | |||
}} | |||
|2={{Clade | |||
|1=] (†7 Mya) | |||
|label2= | |||
|2={{clade | |||
|1='']'' (†17 Mya) | |||
|2={{clade | |||
|1={{clade | |||
|2='']'' (†17 Mya) | |||
|1=] (†18 Mya) | |||
}} | }} | ||
|label2='''(29)''' | |||
|2={{Clade | |||
|1='']'' (†16) | |||
|2='']'' (†11.6 Mya) | |||
|label3='''(29)''' | |||
|3={{Clade | |||
|label1=] (28) | |||
|1={{Clade | |||
|1='']'' (†20) | |||
|2='']'' (†16) | |||
The traditional grouping is further divided into the great apes and the lesser apes:<ref>{{Harvnb|Dixson|1981|p=16}}</ref> | |||
}} | |||
{{Barlabel|style=font-size:90%|labelwidth=11|align=centre | |||
|label2='''Crown Hominoidea (22)''' | |||
|size=6 | |||
|2={{Clade | |||
|at1=3|color1=darkblue|label1=non-human great apes | |||
|1=''']''' | |||
|at2=5|color2=green|label2=lesser apes | |||
|2=''']''' | |||
|cladogram= | |||
}} | |||
{{Cladex|style=width:auto | |||
}} | |||
|label1= Hominoidea (the hominoids) | |||
}} | |||
|1={{Cladex | |||
}} | |||
|label1= ] | |||
}}}}}}|label1='''] (31)'''|style1=line-height:80%;font-size:80%}} | |||
|1={{Cladex | |||
{{Clade|style=line-height:80%;font-size:80% | |||
|label1= ] | |||
|label1=] (31.0 Mya) | |||
|1={{Cladex | |||
|1={{Clade | |||
|label1= ] | |||
|grouplabel1=<br><br><br>Traditional apes | |||
|1={{Cladex | |||
|label1=Hominoidea/apes (20.4 Mya) | |||
|1=humans (genus ''Homo'')|barbegin2=darkblue | |||
|1={{Clade | |||
|2=chimpanzees (genus ''Pan'')|bar2=darkblue | |||
|label1=]/great apes (15.7 Mya) | |||
|1={{Clade | |||
|label1=] (8.8 Mya) | |||
|1={{Clade | |||
|label1=] (6.3 Mya) | |||
|1={{Clade | |||
|1=humans (genus ''Homo'') ] | |||
|2=chimpanzees (genus ''Pan'') ]|barbegin2=purple | |||
}} | |||
|2=gorillas (genus ''Gorilla'') ]|bar2=purple | |||
}} | }} | ||
|2=orangutans (genus ''Pongo'') ]|bar2=purple | |||
|2=gorillas (genus ''Gorilla'')|bar2=darkblue | |||
}} | }} | ||
|2= |
|2=gibbons/lesser apes (family Hylobatidae) ]|barend2=purple | ||
}} | }} | ||
|2=] ] Old World monkeys | |||
|2=gibbons (family Hylobatidae)|barbegin2=green|barend2=green | |||
}} | }} | ||
}} | }} | ||
}} | |||
Thus, there are at least three common, or traditional, uses of the term "ape": non-specialists may not distinguish between "monkeys" and "apes", that is, they may use the two terms interchangeably; or they may use "ape" for any tailless monkey or non-human hominoid; or they may use the term "ape" to just mean the non-human hominoids. | |||
], the "great apes"; and ], the gibbons, or "lesser apes".]] | |||
Modern biologists and primatologists use ] groups for taxonomic classification;<ref name="SpringerHolley2011">{{cite book|author1=Springer|author2=Dennis Holley|title=An Introduction to Zoology: Investigating the Animal World|url=https://books.google.com/books?id=vQQFWkNyYc8C&pg=PA536|date=1 July 2011|publisher=Jones & Bartlett Publishers|isbn=978-0-7637-5286-6|pages=536–|quote=Through careful study taxonomists today struggle to eliminate polyphyletic and paraphyletic groups and taxons, reclassifying their members into appropriate monophyletic taxa}}</ref> that is, they use only those groups that include all descendants of a common ancestor.{{efn|Definitions of ] vary; for the one used here see e.g. {{Cite book |last=Mishler |first=Brent D |year=2009 |editor-last=Ayala |editor-first=F.J. |editor2-last=Arp |editor2-first=R. |contribution=Species are not Uniquely Real Biological Entities |title=Contemporary Debates in Philosophy of Biology |pages=110–122 |isbn=978-1-4443-1492-2 |doi=10.1002/9781444314922.ch6 |lastauthoramp=yes |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}, p. 114}} The superfamily Hominoidea is such a group—also known as a ]. Some scientists now use the term "ape" to mean all members of the superfamily Hominoidea, including humans. For example, in his 2005 book, Benton wrote "The apes, Hominoidea, today include the gibbons and orang-utan ... the gorilla and chimpanzee ... and humans".<ref name=Benton2005p371>{{Cite book |last=Benton |first=Michael J. |year=2005 |title=Vertebrate palaeontology |publisher=Wiley-Blackwell |isbn=978-0-632-05637-8 |url=https://books.google.com/books?id=SyJO3vpCk8AC |accessdate=10 July 2011 |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->{{inconsistent citations}} }}, p. 371</ref> Modern biologists and primatologists refer to apes that are not human as "non-human" apes. Scientists broadly, other than paleoanthropologists, may use the term "]" to identify ], replacing the term "]". See ]. | |||
See below, ], for a discussion of changes in scientific classification and terminology regarding hominoids. | |||
==Biology== | |||
{{Life timeline}} | |||
{{Unreferenced section|date=July 2011}} | |||
], or movement by swinging in tree branches.]] | |||
The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to ] through trees. Their wrists are ]s as an evolutionary adaptation to their ] lifestyle. Generally smaller than the African apes, the largest gibbon, the ], weighs up to {{convert|14|kg|lb|0|abbr=on}}; in comparison, the smallest "great ape", the ], is {{convert|34|to|60|kg|lb|0|abbr=on}}. | |||
Formerly, all the great apes except humans were classified as the family ], which conveniently provided for separating the human family from the apes; see ]. As noted above, such a definition would make a ] grouping of the Pongidae great apes. Current evidence indicates that humans share a common ancestor with the chimpanzee line—from which they separated more recently than from the gorilla line; see ] | |||
The superfamily Hominoidea falls within the ] ], which also includes the Old World monkeys of Africa and Eurasia. Within this grouping, the two families Hylobatidae and Hominidae can be distinguished from Old World monkeys by the number of ] on their ]s; hominoids have five in the "Y-5" molar pattern, whereas Old World monkeys have only four in a ] pattern. | |||
Further, in comparison with Old World monkeys, hominoids are noted for: more mobile shoulder joints and arms due to the dorsal position of the ]; broader ribcages that are flatter front-to-back; and a shorter, less mobile spine, with greatly reduced caudal (tail) vertebrae—resulting in complete loss of the tail in living hominoid species. These are anatomical adaptations, first, to vertical hanging and swinging locomotion (]) and, later, to developing balance in a ] pose. Note there are primates in other families that also lack tails, and at least one, the ], is known to walk significant distances bipedally. The front of the ape skull is characterised by its sinuses, fusion of the frontal bone, and by ]. | |||
Although the hominoid fossil record is still incomplete and fragmentary, there is now enough evidence to provide an outline of the ]. Previously, the divergence between humans and other living hominoids was thought to have occurred 15 to 20 million years ago, and several species of that time period, such as '']'', were once thought to be ]s and possible ancestors of humans. But later fossil finds indicated that ''Ramapithecus'' was more closely related to the orangutan. And new biochemical evidence indicates that the last common ancestor of humans and non-hominins (that is, the chimpanzees) occurred between 5 and 10 million years ago, and probably nearer the lower end of that range; see ] (CHLCA). | |||
===Behaviour and cognition=== | |||
{{Refimprove section|date=July 2011}}] | |||
Although there had been earlier studies, the scientific investigation of behaviour and cognition in non-human members of the superfamily Hominoidea expanded enormously during the latter half of the twentieth century. Major studies of behaviour in the field were completed on the three better-known "great apes", for example by ], ] and ]. These studies have shown that in their natural environments, the non-human hominoids show sharply varying social structure: gibbons are monogamous, territorial pair-bonders, orangutans are solitary, gorillas live in small troops with a single adult male leader, while chimpanzees live in larger troops with bonobos exhibiting promiscuous sexual behaviour. Their diets also vary; gorillas are ]s, while the others are all primarily ]s, although the common chimpanzee does some hunting for meat. Foraging behaviour is correspondingly variable. | |||
All the non-human hominoids are generally thought of as highly intelligent, and scientific study has broadly confirmed that they perform very well on a wide range of cognitive tests—though there is relatively little data on gibbon cognition. The early studies by ] demonstrated exceptional ] abilities in chimpanzees, which Köhler attributed to ]. The ] has been repeatedly demonstrated; more recently, the manufacture of tools has been documented, both in the wild and in laboratory tests. ] is much more easily demonstrated in "great apes" than in other primate species. Almost all the studies in ] have been done with "great apes", and though there is continuing dispute as to whether they demonstrate real language abilities, there is no doubt that they involve significant feats of learning. Chimpanzees in different parts of Africa have developed tools that are used in food acquisition, demonstrating a form of ].<ref>{{cite book | author = William McGrew|title = Chimpanzee material culture: implications for human evolution | year = 1992}}</ref> | |||
===Distinction from monkeys=== | |||
{{See also|Monkey#Historical and modern terminology}} | |||
], apes, catarrhines, and extinct species such as ] and ]a, are monkeys{{citation needed|date=October 2016}}, so one can only specify apes features not present in other monkeys. | |||
Apes do not possess a tail, unlike most ]s. Monkeys are more likely to be in trees and use their tails for balance. While the great apes are considerably larger than monkeys, ]s (lesser apes) are smaller than some monkeys. Apes are considered to be more intelligent than monkeys, which are considered to have more primitive brains.<ref>The gestural communication of apes and monkeys: Josep Call, Michael Tomasello - 2007</ref> | |||
==History of hominoid taxonomy== | |||
The history of hominoid taxonomy is complex and somewhat confusing. Over time, authorities have changed the names and the meanings of names of groups and subgroups as new evidence—that is, new discoveries of fossils and tools and of observations in the field, plus continual comparisons of anatomy and DNA sequences—has changed the understanding of relationships between hominoids. There has been a gradual demotion of humans from being 'special' in the taxonomy to being one branch among many. This recent turmoil (of history) illustrates the growing influence on all taxonomy of ], the science of classifying living things strictly according to their lines of descent. | |||
Today, there are eight extant ] of hominoids. They are the four genera in the family Hominidae, namely '']'', '']'', '']'', and '']''; plus four genera in the family Hylobatidae (gibbons): '']'', '']'', '']'' and '']''.<ref name=MSW3/> (The two subspecies ] were recently moved from the genus '']'' to the new genus ''Hoolock'').<ref name="Mootnick">{{cite journal |last1=Mootnick |first1=A. |last2=Groves |first2=C. P. |year=2005 |title=A new generic name for the hoolock gibbon (Hylobatidae) |journal=International Journal of Primatology |issue=26 |pages=971–976 |doi=10.1007/s10764-005-5332-4 |volume=26 |ref=harv}}</ref>) | |||
In 1758, ], relying on second- or third-hand accounts, placed a second species in ''Homo'' along with ''H. sapiens'': ''Homo troglodytes'' ("cave-dwelling man"). It is not clear to which animal this name refers, as Linnaeus had no specimen to refer to, hence no precise description. Linnaeus named the orangutan ''Simia satyrus'' ("satyr monkey"). He placed the three genera ''Homo'', '']'' and ''Lemur'' in the order of Primates. | |||
The ''troglodytes'' name was used for the chimpanzee by ] in 1775, but moved to the genus ''Simia''. The orangutan was moved to the genus '']'' in 1799 by ]. | |||
Linnaeus's inclusion of humans in the primates with monkeys and apes was troubling for people who denied a close relationship between humans and the rest of the animal kingdom. Linnaeus's Lutheran archbishop had accused him of "impiety". In a letter to ] dated 25 February 1747, Linnaeus wrote: | |||
:It is not pleasing to me that I must place humans among the primates, but man is intimately familiar with himself. Let's not quibble over words. It will be the same to me whatever name is applied. But I desperately seek from you and from the whole world a general difference between men and simians from the principles of Natural History. I certainly know of none. If only someone might tell me one! If I called man a simian or vice versa I would bring together all the theologians against me. Perhaps I ought to, in accordance with the law of Natural History.<ref>{{cite web | url = http://linnaeus.c18.net/Letters/display_txt.php?id_letter=L0783 | title = Letter, Carl Linnaeus to Johann Georg Gmelin. Uppsala, Sweden, 25 February 1747 | publisher = Swedish Linnaean Society}}</ref> | |||
Accordingly, ] in the first edition of his ''Manual of Natural History'' (1779), proposed that the primates be divided into the ] (four-handed, i.e. apes and monkeys) and ] (two-handed, i.e. humans). This distinction was taken up by other naturalists, most notably ]. Some elevated the distinction to the level of ]. | |||
However, the many affinities between humans and other primates — and especially the "great apes" — made it clear that the distinction made no scientific sense. In '']'', ] wrote:<blockquote>The greater number of naturalists who have taken into consideration the whole structure of man, including his mental faculties, have followed Blumenbach and Cuvier, and have placed man in a separate Order, under the title of the Bimana, and therefore on an equality with the orders of the Quadrumana, Carnivora, etc. Recently many of our best naturalists have recurred to the view first propounded by Linnaeus, so remarkable for his sagacity, and have placed man in the same Order with the Quadrumana, under the title of the Primates. The justice of this conclusion will be admitted: for in the first place, we must bear in mind the comparative insignificance for classification of the great development of the brain in man, and that the strongly marked differences between the skulls of man and the Quadrumana (lately insisted upon by ], ], and others) apparently follow from their differently developed brains. In the second place, we must remember that nearly all the other and more important differences between man and the Quadrumana are manifestly adaptive in their nature, and relate chiefly to the erect position of man; such as the structure of his hand, foot, and pelvis, the curvature of his spine, and the position of his head.<ref>{{cite book | author = ]|title = ] | year = 1871 | isbn = 0-7607-7814-0}}</ref></blockquote> | |||
<!-- ...history from 1870 to 1960 goes here... --> | |||
<!-- ...history from 1870 to 1960 goes here... --> | |||
===Changes in taxonomy and terminology ("hominid" v "hominin")=== | |||
{{see also|Human evolution}} | |||
{| class="wikitable" | |||
| '''Humans the non-apes''': Until about 1960, taxonomists typically divided the superfamily Hominoidea into two families. The science community treated humans and their extinct relatives as the ] within the superfamily; that is, humans were considered as quite distant from kinship with the "apes". Humans were classified as the family ] and were known as the "hominids". All other hominoids were known as "apes" and were referred to the family ].<ref>{{cite journal|author = G. G. Simpson | year = 1945 | title = The principles of classification and a classification of mammals | journal = Bull. Am. Mus. Nat. Hist. | volume = 85 | pages = 1–350 | authorlink = George Gaylord Simpson|ref = harv}}</ref> | |||
| ] | |||
|- | |||
| '''The "great apes" in Pongidae''': The 1960s saw the methodologies of ] applied to primate taxonomy. Goodman's 1964 immunological study of serum proteins led to re-classifying the hominoids into three families: the humans in Hominidae; the great apes in Pongidae; and the "lesser apes" (gibbons) in ].<ref name=Goodman>{{cite book | author = M. Goodman | year = 1964 | chapter = Man’s place in the phylogeny of the primates as reflected in serum proteins | editor = S. L. Washburn | title = Classification and human evolution | publisher = Aldine, Chicago|pages = 204–234}}</ref> However, a ]—Pan, Gorilla, and Pongo—of the "great apes" in Pongidae presented a puzzle; scientists wanted to know which genus ] first from the common hominoid ancestor. | |||
| ] | |||
|- | |||
| '''Gibbons the outgroup''': New studies indicated that ]s, not humans, are the ] within the superfamily Hominoidea, meaning: the rest of the hominoids are more closely related to each other than (any of them) are to the gibbons. With this splitting, the gibbons (Hylobates, et al.) were isolated after moving the great apes into the same family as humans. Now the term "hominid" encompassed a larger collective taxa within the family Hominidae. The trichotomy still required scientists to learn which genus is 'least' related to the others. | |||
| ] | |||
|- | |||
| '''Orangutans the outgroup''': Investigations comparing humans and the three other hominid genera disclosed that the African apes (chimpanzees and gorillas) and humans are more closely related to each other than any of them are to the Asian orangutans (Pongo); that is, the ]s, not humans, are the ] within the family Hominidae. This led to reassigning the African apes to the subfamily Homininae with humans—which presented a new three-way split (trichotomy), Homo, Pan, Gorilla.<ref name=Goodman1>{{cite journal | journal = Annual Review of Anthropology | volume = 3 | issue = 1 | pages = 203–228 | year = 1974 | doi = 10.1146/annurev.an.03.100174.001223 | title = Biochemical Evidence on Hominid Phylogeny | author = M. Goodman | ref = harv}}</ref> | |||
| ] | |||
|- | |||
| '''Hominins''': In an effort to resolve the trichotomy, while preserving the "outgroup" status of humans, the subfamily Homininae was divided into two tribes: Gorillini, comprising genus Pan and genus Gorilla; and Hominini, comprising genus Homo (the humans). Humans and close relatives now began to be known as "hominins", that is, of tribe Hominini. Thus, the term "hominin" succeeded to the previous use of "hominid", which meaning had changed with changes in Hominidae (see above: 3rd graphic, "Gibbons the outgroup"). | |||
| ] | |||
|- | |||
| '''Gorillas the outgroup''': New DNA comparisons now provided evidence that ], not humans, are the outgroup in the subfamily Homininae; this suggested that chimpanzees should be grouped with humans in the tribe Hominini, but in separate subtribes.<ref name=Goodman2/> Now the name "hominin" delineated Homo plus those earliest Homo relatives and ancestors that arose ''after'' the divergence from the chimpanzees. (Humans are no longer an outgroup, but are a branch, deep in the tree of the pre-1960s ape group.) | |||
| ] | |||
|- | |||
| '''Speciation of gibbons''': Later DNA comparisons disclosed previously unknown speciation of genus ''Hylobates'' (gibbons) into four genera: '']'', '']'', '']'', and '']''.<ref name=MSW3/><ref name=Mootnick/> See ] re the speciation of humans and great apes. | |||
| ] | |||
|} | |||
] | |||
==Classification and evolution== | |||
], the "great apes"; and ], the gibbons, or "lesser apes".]] | |||
As discussed above, hominoid taxonomy has undergone several changes. Genetic analysis combined with fossil evidence indicates that hominoids diverged from the ]s about 25 million years ago (mya), near the Oligocene-Miocene boundary.<ref>{{cite web|url=http://news.sciencemag.org/paleontology/2013/05/fossils-may-pinpoint-critical-split-between-apes-and-monkeys|title=Fossils May Pinpoint Critical Split Between Apes and Monkeys |date=15 May 2013 |publisher=redOrbit.com}}</ref> The gibbons split from the rest about 18 mya, and the hominid splits happened 14 mya (''Pongo''), 7 mya (''Gorilla''), and 3–5 mya (''Homo'' & ''Pan'').{{Citation needed|date=July 2008}}<!-- note, this figure of 3-5 mya for the Homo/Pan split differs from the figure in the article ], which says 6.5-7.4 mya or alternatively 5.4-6.3 mya--> In 2015, a new genus and species were described, ''Pliobates cataloniae'', which lived 11.6 mya, and appears to predate the split between Hominidae and Hylobatidae.<ref>{{cite web|url=http://phys.org/news/2015-10-primate-species-root-tree-extant.html|title=A new primate species at the root of the tree of extant hominoids|date=29 October 2015}}</ref> | |||
The families, and extant genera and species of hominoids are: | The families, and extant genera and species of hominoids are: | ||
Line 184: | Line 137: | ||
**** ], ''P. pygmaeus'' | **** ], ''P. pygmaeus'' | ||
**** ], ''P. abelii'' | **** ], ''P. abelii'' | ||
**** ], ''P. tapanuliensis''<ref name="NYT-20171102">{{cite news |last=Cochrane |first=J. |title=New Orangutan Species Could Be the Most Endangered Great Ape |url=https://www.nytimes.com/2017/11/02/science/new-orangutan-species.html |date=2 November 2017 |work=] |access-date=3 November 2017 |archive-date=17 April 2018 |archive-url=https://web.archive.org/web/20180417014924/https://www.nytimes.com/2017/11/02/science/new-orangutan-species.html |url-status=live }}</ref> | |||
*** Genus '']'': gorillas | *** Genus '']'': gorillas | ||
**** ], ''G. gorilla'' | **** ], ''G. gorilla'' | ||
**** ], ''G. beringei'' | **** ], ''G. beringei'' | ||
*** Genus '']'': humans | *** Genus '']'': humans | ||
**** ], ''H. sapiens'' | **** ], ''H. sapiens'' | ||
*** Genus '']'': chimpanzees | *** Genus '']'': chimpanzees | ||
**** ], ''P. troglodytes'' | **** ], ''P. troglodytes'' | ||
**** ], ''P. paniscus'' | **** ], ''P. paniscus'' | ||
** Family ]: gibbons ("lesser apes") | ** Family ]: gibbons ("lesser apes") | ||
Line 197: | Line 151: | ||
**** ], ''H. albibarbis'' | **** ], ''H. albibarbis'' | ||
**** ] or black-handed gibbon, ''H. agilis'' | **** ] or black-handed gibbon, ''H. agilis'' | ||
****] or Abbott's grey gibbon, ''H. abbotti''<ref name=":1">{{Cite book |last1=Wilson |first1=Don E. |last2=Cavallini |first2=Paolo |date=2013 |title=Handbook of the Mammals of the World |location=Barcelona |publisher=Lynx Edicions |isbn=978-84-96553-89-7 |oclc=1222638259}}</ref> | |||
**** ] or grey gibbon, ''H. muelleri'' | |||
**** ] or northern grey gibbon, ''H. funereus''<ref name=":1" /> | |||
**** ] or southern grey gibbon, ''H. muelleri'' | |||
**** ], ''H. moloch'' | **** ], ''H. moloch'' | ||
**** ] or capped gibbon, ''H. pileatus'' | **** ] or capped gibbon, ''H. pileatus'' | ||
Line 204: | Line 160: | ||
**** ], ''H. hoolock'' | **** ], ''H. hoolock'' | ||
**** ], ''H. leuconedys'' | **** ], ''H. leuconedys'' | ||
**** ], ''H. tianxing''<!--as per wiki article on Gibbons--> | |||
*** Genus '']'' | *** Genus '']'' | ||
**** ], ''S. syndactylus'' | **** ], ''S. syndactylus'' | ||
*** Genus '']'' | *** Genus '']'' | ||
**** ], ''N. annamensis''<!--as per wiki article on Gibbons--> | |||
**** ], ''N. concolor'' | **** ], ''N. concolor'' | ||
**** ], ''N. nasutus'' | **** ], ''N. nasutus'' | ||
Line 214: | Line 172: | ||
**** ], ''N. gabriellae'' | **** ], ''N. gabriellae'' | ||
=== History of hominoid taxonomy === | |||
==See also== | |||
{{see|Human taxonomy#History}} | |||
{{Portal|Mammals}} | |||
{{div col|2}} | |||
The history of hominoid taxonomy is complex and somewhat confusing. Recent evidence has changed our understanding of the relationships between the hominoids, especially regarding the human lineage; and the traditionally used terms have become somewhat confused. Competing approaches to methodology and terminology are found among current scientific sources. Over time, authorities have changed the names and the meanings of names of groups and subgroups as new evidence — that is, new discoveries of fossils and tools and of observations in the field, plus continual comparisons of anatomy and ] — has changed the understanding of relationships between hominoids. There has been a gradual demotion of humans from being 'special' in the taxonomy to being one branch among many. This recent turmoil (of history) illustrates the growing influence on all taxonomy of ], the science of classifying living things strictly according to their lines of descent.{{citation needed|date=December 2021}} | |||
* ] | |||
* '']'' from the ] | |||
Today, there are eight extant ] of hominoids. They are the four genera in the family Hominidae, namely '']'', '']'', '']'', and '']''; plus four genera in the family Hylobatidae (gibbons): '']'', '']'', '']'' and '']''.<ref name=MSW3>{{MSW3 Groves|pages=178–184|id=12100751}}</ref> (The two subspecies of ] were recently moved from the genus '']'' to the new genus ''Hoolock'' and re-ranked as species; a third species was described in January 2017).<ref name="Mootnick">{{cite journal |last1=Mootnick |first1=A. |last2=Groves |first2=C. P. |year=2005 |title=A new generic name for the hoolock gibbon (Hylobatidae) |journal=International Journal of Primatology |issue=4 |pages=971–976 |doi=10.1007/s10764-005-5332-4 |volume=26 |s2cid=8394136}}</ref> | |||
* ] | |||
* ] (for notable non-fictional apes) | |||
In 1758, ], relying on second- or third-hand accounts, placed a second species in ''Homo'' along with ''H. sapiens'': ''Homo troglodytes'' ("cave-dwelling man"). Although the term "Orang Outang" is listed as a variety – ''Homo sylvestris'' – under this species, it is nevertheless not clear to which animal this name refers, as Linnaeus had no specimen to refer to, hence no precise description. Linnaeus may have based ''Homo troglodytes'' on reports of mythical creatures, then-unidentified ]s, or Asian natives dressed in animal skins.<ref>{{cite book |last1=Frängsmyr |first1=T. |last2=Lindroth |first2=S. |last3=Eriksson |first3=G. |last4=Broberg |first4=G. |title=Linnaeus, the man and his work |year=1983 |publisher=] |location=Berkeley and Los Angeles |isbn=978-0-7112-1841-3}}, p. 166</ref> Linnaeus named the orangutan ''Simia satyrus'' ("satyr monkey"). He placed the three genera ''Homo'', '']'' and ''Lemur'' in the order of Primates. | |||
* ] | |||
The ''troglodytes'' name was used for the chimpanzee by ] in 1775, but moved to the genus ''Simia''. The orangutan was moved to the genus '']'' in 1799 by ]. | |||
Linnaeus's inclusion of humans in the primates with monkeys and apes was troubling for people who denied a close relationship between humans and the rest of the animal kingdom. Linnaeus's Lutheran archbishop had accused him of "impiety". In a letter to ] dated 25 February 1747, Linnaeus wrote: | |||
{{Blockquote|text=It is not pleasing to me that I must place humans among the primates, but man is intimately familiar with himself. Let's not quibble over words. It will be the same to me whatever name is applied. But I desperately seek from you and from the whole world a general difference between men and simians from the principles of Natural History. I certainly know of none. If only someone might tell me one! If I called man a simian or vice versa I would bring together all the theologians against me. Perhaps I ought to, in accordance with the law of Natural History.<ref>{{cite web |url=http://linnaeus.c18.net/Letters/display_txt.php?id_letter=L0783 |title=Letter, Carl Linnaeus to Johann Georg Gmelin. Uppsala, Sweden, 25 February 1747 |publisher=Swedish Linnaean Society |access-date=4 February 2009 |archive-date=27 February 2009 |archive-url=https://web.archive.org/web/20090227174240/http://linnaeus.c18.net/Letters/display_txt.php?id_letter=L0783 |url-status=live }}</ref>}} | |||
Accordingly, ] in the first edition of his ''Manual of Natural History'' (1779), proposed that the primates be divided into the ] (four-handed, i.e. apes and monkeys) and ] (two-handed, i.e. humans). This distinction was taken up by other naturalists, most notably ]. Some elevated the distinction to the level of ]. | |||
However, the many affinities between humans and other primates – and especially the "great apes" – made it clear that the distinction made no scientific sense. In his 1871 book '']'', ] wrote: | |||
{{Blockquote|text=The greater number of naturalists who have taken into consideration the whole structure of man, including his mental faculties, have followed Blumenbach and Cuvier, and have placed man in a separate Order, under the title of the Bimana, and therefore on an equality with the orders of the Quadrumana, Carnivora, etc. Recently many of our best naturalists have recurred to the view first propounded by Linnaeus, so remarkable for his sagacity, and have placed man in the same Order with the Quadrumana, under the title of the Primates. The justice of this conclusion will be admitted: for in the first place, we must bear in mind the comparative insignificance for classification of the great development of the brain in man, and that the strongly marked differences between the skulls of man and the Quadrumana (lately insisted upon by ], ], and others) apparently follow from their differently developed brains. In the second place, we must remember that nearly all the other and more important differences between man and the Quadrumana are manifestly adaptive in their nature, and relate chiefly to the erect position of man; such as the structure of his hand, foot, and pelvis, the curvature of his spine, and the position of his head.<ref>{{cite book |first=C. |last=Darwin |title=The Descent of Man |year=1871 |isbn=978-0-7607-7814-2| title-link=The Descent of Man |publisher=Barnes & Noble |author-link=Charles Darwin}}</ref>}} <!-- ...history from 1870 to 1960 goes here... --> | |||
=== Changes in taxonomy and terminology === | |||
{{see also|Hominidae|Human taxonomy}} | |||
{| class="wikitable" | |||
| '''Humans the non-apes''': Until about 1960, taxonomists typically divided the superfamily Hominoidea into two families. The science community treated humans and their extinct relatives as the ] within the superfamily; that is, humans were considered as quite distant from kinship with the "apes". Humans were classified as the family ] and were known as the "hominids". All other hominoids were known as "apes" and were referred to the family ].<ref>{{cite journal |last=G. G. |first=Simpson |year=1945 |title=The principles of classification and a classification of mammals |journal=Bulletin of the American Museum of Natural History |volume=85 |pages=1–350 |author-link=George Gaylord Simpson}}</ref> | |||
| ] | |||
|- | |||
| '''The "great apes" in Pongidae''': The 1960s saw the methodologies of ] applied to primate taxonomy. Goodman's 1964 immunological study of serum proteins led to re-classifying the hominoids into three families: the humans in Hominidae; the great apes in Pongidae; and the "lesser apes" (gibbons) in ].<ref name=Goodman>{{cite book |first=M. |last=Goodman |year=1964 |chapter=Man's place in the phylogeny of the primates as reflected in serum proteins |editor-first=S. L. |editor-last=Washburn |title=Classification and Human Evolution |publisher=Aldine |location=Chicago |pages=204–234}}</ref> However, this arrangement had two ]: ''Pan'', ''Gorilla'', and ''Pongo'' of the "great apes" in Pongidae, and Hominidae, Pongidae, and Hylobatidae in Hominoidea. These presented a puzzle; scientists wanted to know which genus ] first from the common hominoid ancestor. | |||
| ] | |||
|- | |||
| '''Gibbons the outgroup''': New studies indicated that ]s, not humans, are the ] within the superfamily Hominoidea, meaning: the rest of the hominoids are more closely related to each other than (any of them) are to the gibbons. With this splitting, the gibbons (''Hylobates'', ''et al''.) were isolated after moving the great apes into the same family as humans. Now the term "hominid" encompassed a larger collective taxa within the family Hominidae. With the family trichotomy settled, scientists could now work to learn which genus is 'least' related to the others in the subfamily Ponginae. | |||
| ] | |||
|- | |||
| '''Orangutans the outgroup''': Investigations comparing humans and the three other hominid genera disclosed that the African apes (chimpanzees and gorillas) and humans are more closely related to each other than any of them are to the Asian orangutans (''Pongo''); that is, the ]s, not humans, are the ] within the family Hominidae. This led to reassigning the African apes to the subfamily Homininae with humans—which presented a new three-way split: ''Homo'', ''Pan'', and ''Gorilla''.<ref name=Goodman1>{{cite journal |title=Biochemical evidence on hominid phylogeny |first=M. |last=Goodman |journal=Annual Review of Anthropology |volume=3 |issue=1 |pages=203–228 |year=1974 |doi=10.1146/annurev.an.03.100174.001223}}</ref> | |||
| ] | |||
|- | |||
| '''Hominins''': In an effort to resolve the trichotomy, while preserving the nostalgic "outgroup" status of humans, the subfamily Homininae was divided into two tribes: Gorillini, comprising genus ''Pan'' and genus ''Gorilla''; and Hominini, comprising genus ''Homo'' (the humans). Humans and close relatives now began to be known as "hominins", that is, of the tribe Hominini. Thus, the term "hominin" succeeded to the previous use of "hominid", which meaning had changed with changes in Hominidae (see above: 3rd graphic, "Gibbons the outgroup"). | |||
| ] | |||
|- | |||
| '''Gorillas the outgroup''': New DNA comparisons now provided evidence that ], not humans, are the outgroup in the subfamily Homininae; this suggested that chimpanzees should be grouped with humans in the tribe Hominini, but in separate subtribes.<ref name=Goodman2>{{cite journal |title=Primate evolution at the DNA level and a classification of hominoids |first1=M. |last1=Goodman |first2=D. A. |last2=Tagle |first3=D. H. |last3=Fitch |first4=W. |display-authors=3 |last4=Bailey |first5=J. |last5=Czelusniak |first6=B. F. |last6=Koop |first7=P. |last7=Benson |first8=J. L. |last8=Slightom |journal=Journal of Molecular Evolution |year=1990 |volume=30 |pages=260–266 |doi = 10.1007/BF02099995 |pmid=2109087 |issue=3 |bibcode=1990JMolE..30..260G |s2cid=2112935}}</ref> Now the name "hominin" delineated ''Homo'' plus those earliest ''Homo'' relatives and ancestors that arose ''after'' the divergence from the chimpanzees. (Humans are no longer recognized as an outgroup, but are a branch, ] of the pre-1960s ape group). | |||
| ] | |||
|- | |||
| '''Speciation of gibbons''': Later DNA comparisons disclosed previously unknown speciation of genus ''Hylobates'' (gibbons) into four genera: '']'', '']'', '']'', and '']''.<ref name=MSW3/><ref name=Mootnick/> The ordering of speciation of these four genera are being ] {{As of|2022|lc=yes}}. | |||
| ] | |||
|} | |||
== Characteristics == | |||
{{Unreferenced section|date=July 2011}} | |||
], or movement by swinging in tree branches.]] | |||
The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to ] through trees. Their wrists are ]s as an evolutionary adaptation to their ] lifestyle. Generally smaller than the African apes, the largest gibbon, the ], weighs up to {{convert|14|kg|lb|0|abbr=on}}; in comparison, the smallest "great ape", the ], is {{convert|34|to|60|kg|lb|0|abbr=on}}. | |||
The superfamily Hominoidea falls within the ] ], which also includes the Old World monkeys of Africa and Eurasia. Within this grouping, the two families Hylobatidae and Hominidae can be distinguished from Old World monkeys by the number of ] on their ]; hominoids have five in the "Y-5" molar pattern, whereas Old World monkeys have only four in a ] pattern. | |||
Further, in comparison with Old World monkeys, hominoids are noted for: more mobile shoulder joints and arms due to the dorsal position of the ]; broader ribcages that are flatter front-to-back; and a shorter, less mobile spine, with greatly reduced caudal (tail) vertebrae—resulting in complete loss of the tail in extant hominoid species. These are anatomical adaptations, first, to vertical hanging and swinging locomotion (]) and, later, to developing balance in a ] pose. Note there are primates in other families that also lack tails, and at least one, the ], is known to walk significant distances bipedally. The front of the ape skull is characterised by its sinuses, fusion of the frontal bone, and by ]. | |||
=== Distinction from monkeys === | |||
{{See also|Monkey#Historical and modern terminology}} | |||
], apes, catarrhines, and extinct species such as ] and ]a, are monkeys,{{citation needed|date=October 2016}} so one can only specify ape features not present in other monkeys. | |||
Unlike most ]s, apes do not possess a tail. Monkeys are more likely to be in trees and use their tails for balance. While the great apes are considerably larger than monkeys, ]s (lesser apes) are smaller than some monkeys. Apes are considered to be more intelligent than monkeys, which are considered to have more primitive brains.<ref>{{cite book |title=The Gestural Communication of Apes and Monkeys |first1=J. |last1=Call |first2=M. |last2=Tomasello |year=2007 |publisher=Taylor & Francis Group/Lawrence Erlbaum Associates}}</ref> | |||
The enzyme ] has become inactive in all apes, its function having been lost in two ] lineages during the middle Miocene; first in the common ancestors of Hominidae, and later in the common ancestor of Hylobatidae. It has been hypothesized that in both incidents it was a mutation that occurred in apes living in Europe when the climate was getting colder, leading to starvation during winter. The mutation changed the biochemistry of the apes and made it easier to accumulate fat, which allowed the animals to survive longer periods of starvation. When they migrated to Asia and Africa, this genetic trait remained.<ref>{{cite journal | pmc=3203212 | year=2011 | last1=Johnson | first1=R. J. | last2=Lanaspa | first2=M. A. | last3=Gaucher | first3=E. A. | title=Uric acid: A Danger Signal from the RNA World that may have a role in the Epidemic of Obesity, Metabolic Syndrome and CardioRenal Disease: Evolutionary Considerations | journal=Seminars in Nephrology | volume=31 | issue=5 | pages=394–399 | doi=10.1016/j.semnephrol.2011.08.002 | pmid=22000645 }}</ref><ref>{{cite journal | url=https://www.scientificamerican.com/article/ancient-mutation-in-apes-may-explain-human-obesity-and-diabetes/ | doi=10.1038/scientificamerican1015-64 | title=The Fat Gene | year=2015 | last1=Johnson | first1=Richard J. | last2=Andrews | first2=Peter | journal=Scientific American | volume=313 | issue=4 | pages=64–69 | bibcode=2015SciAm.313d..64J }}</ref> | |||
== Behaviour == | |||
Major studies of behaviour in the field were completed on the three better-known "great apes", for example by ], ] and ]. These studies have shown that in their natural environments, the non-human hominoids show sharply varying social structure: gibbons are monogamous, territorial pair-bonders, orangutans are solitary, gorillas live in small troops with a single adult male leader, while chimpanzees live in larger troops with bonobos exhibiting promiscuous sexual behaviour. Their diets also vary; gorillas are ]s, while the others are all primarily ]s, although the common chimpanzee hunts for meat. Foraging behaviour is correspondingly variable. | |||
In November 2023, scientists reported, for the first time, evidence that groups of ]s, including apes, and, particularly ]s, are capable of cooperating with each other.<ref name="NYT-20231116">{{cite news |last=Zimmer |first=Carl |authorlink=Carl Zimmer |title=Scientists Find First Evidence That Groups of Apes Cooperate - Some bonobos are challenging the notion that humans are the only primates capable of group-to-group alliances. |url=https://www.nytimes.com/2023/11/16/science/bonobos-cooperation-study.html |date=16 November 2023 |work=] |url-status=live |archiveurl=https://archive.today/20231116194259/https://www.nytimes.com/2023/11/16/science/bonobos-cooperation-study.html |archivedate=16 November 2023 |accessdate=17 November 2023 }}</ref><ref name="SCI-20231116">{{cite journal |author=Samuni, Liran |display-authors=et al. |title=Cooperation across social borders in bonobos | |||
|url=https://www.science.org/doi/10.1126/science.adg0844 |date=16 November 2023 |journal=] |volume=382 |issue=6672 |pages=805–809 |doi=10.1126/science.adg0844 |pmid=37972165 |bibcode=2023Sci...382..805S |url-status=live |archiveurl=https://archive.today/20231117125744/https://www.science.org/doi/10.1126/science.adg0844 |archivedate=17 November 2023 |accessdate=17 November 2023 }}</ref> | |||
=== Diet === | |||
Apart from humans and gorillas, apes eat a predominantly ] diet, mostly fruit, but supplemented with a variety of other foods. Gorillas are predominantly ], eating mostly stalks, shoots, roots and leaves with some fruit and other foods. Non-human apes usually eat a small amount of raw animal foods such as insects or eggs. In the case of humans, migration and the invention of hunting tools and cooking has led to an even wider variety of foods and diets, with many human diets including large amounts of cooked ]s (]s) or ]s.<ref>{{cite web |url=https://www.newscientist.com/article/mg23230980-600-every-human-culture-includes-cooking-this-is-how-it-began |title=Every human culture includes cooking – this is how it began |first=G. |last=Lawton |date=2 November 2016 |website=] |access-date=27 August 2021 |archive-date=29 July 2021 |archive-url=https://web.archive.org/web/20210729081037/https://www.newscientist.com/article/mg23230980-600-every-human-culture-includes-cooking-this-is-how-it-began/ |url-status=live }}</ref> Other food production and processing methods including animal husbandry and industrial refining and processing have further changed human diets.<ref>{{cite journal |url=http://www.nature.com/news/humans-are-becoming-more-carnivorous-1.14282 |title=Humans are becoming more carnivorous |last=Hoag |first=Hannah |date=2 December 2013 |journal=] |doi=10.1038/nature.2013.14282 |s2cid=183143537 |access-date=26 November 2014 |archive-date=29 November 2014 |archive-url=https://web.archive.org/web/20141129232443/http://www.nature.com/news/humans-are-becoming-more-carnivorous-1.14282 |url-status=live }}</ref> Humans and other apes occasionally eat other primates.<ref>{{cite web |url=https://www.newscientist.com/article/dn14926-loving-bonobos-have-a-carnivorous-dark-side.html#.VHXsaclWqUU |title=Loving bonobos have a carnivorous dark side |last=Callaway |first=E. |date=13 October 2006 |work=] |access-date=26 November 2014 |archive-date=29 October 2014 |archive-url=https://web.archive.org/web/20141029130152/http://www.newscientist.com/article/dn14926-loving-bonobos-have-a-carnivorous-dark-side.html#.VHXsaclWqUU |url-status=live }}</ref> Some of these primates are now close to extinction with habitat loss being the underlying cause.<ref>{{cite web |url=http://www.bbc.com/earth/story/20150728-chimps-nearly-wiped-out-monkeys |title=Chimpanzees over-hunt monkey prey almost to extinction |first=Michael |last=M. |publisher=] |access-date=28 May 2018 |archive-date=6 June 2018 |archive-url=https://web.archive.org/web/20180606155344/http://www.bbc.com/earth/story/20150728-chimps-nearly-wiped-out-monkeys |url-status=live }}</ref><ref>{{cite news |url=https://www.sciencedaily.com/releases/2008/08/080804222912.htm |title=Extinction threat to monkeys and other primates due to habitat loss, hunting |website=] |access-date=28 May 2018 |archive-date=28 May 2018 |archive-url=https://web.archive.org/web/20180528134736/https://www.sciencedaily.com/releases/2008/08/080804222912.htm |url-status=live }}</ref> | |||
=== Cognition === | |||
] | |||
All the non-human hominoids are generally thought of as highly intelligent, and scientific study has broadly confirmed that they perform very well on a wide range of cognitive tests—though there is relatively little data on gibbon cognition. The early studies by ] demonstrated exceptional ] abilities in chimpanzees, which Köhler attributed to ]. The ] has been repeatedly demonstrated; more recently, the manufacture of tools has been documented, both in the wild and in laboratory tests. ] is much more easily demonstrated in "great apes" than in other primate species. Almost all the studies in ] have been done with "great apes", and though there is continuing dispute as to whether they demonstrate real language abilities, there is no doubt that they involve significant feats of learning. Chimpanzees in different parts of Africa have developed tools that are used in food acquisition, demonstrating a form of ].<ref>{{cite book |first=W. |last=McGrew |title=Chimpanzee Material Culture: Implications for Human Evolution |year=1992}}</ref> | |||
== Threats and conservation == | |||
All non-human hominoids are rare and threatened with ]ion. The ] is the least threatened, only being ] to extinction. Five gibbon species are ], as are all species of orangutan and gorilla. The remaining species of gibbon, the bonobo, and all four subspecies of chimpanzees are ]. The chief threat to most of the endangered species is loss of tropical ] habitat, though some populations are further imperiled by hunting for ]. The great apes of Africa are also facing threat from the ].<ref>{{cite news |last=Rush |first=J. |date=23 January 2015 |title=Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn |url=https://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |url-status=dead |archive-url=https://web.archive.org/web/20150330035716/http://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |archive-date=30 March 2015 |access-date=26 March 2015 |work=The Independent}}</ref> Currently considered to be the greatest threat to survival of African apes, ] infection is responsible for the death of at least one third of all gorillas and chimpanzees since 1990.<ref>{{cite news |url=https://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |title=Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn |last=Rush |first=J. |date=23 January 2015 |work=The Independent |access-date=26 March 2015 |archive-url=https://web.archive.org/web/20150330035716/http://www.independent.co.uk/news/world/africa/ebola-virus-has-killed-a-third-of-the-worlds-gorillas-and-chimpanzees--and-could-pose-greatest-threat-to-their-survival-conservationists-warn-9998386.html |archive-date=30 March 2015 |url-status=dead}}</ref> | |||
All the species of ] in Africa, are considered endangered. Hunting, logging, agricultural expansion and mining are among the main threats. Recently mining has expanded due to the ]. According to researchers "This means that current climate solutions could lead to more industrialization in these places, which could worsen the climate crisis". The ] was created for solve problems like this.<ref>{{cite journal |title=Threat of mining to African great apes |journal=Science Advances |date=3 April 2024 |volume=10 |issue=14 |doi=10.1126/sciadv.adl0335 |url=https://www.science.org/doi/10.1126/sciadv.adl0335 |access-date=19 September 2024 |last1=Junker |first1=Jessica |last2=Quoss |first2=Luise |last3=Valdez |first3=Jose |last4=Arandjelovic |first4=Mimi |last5=Barrie |first5=Abdulai |last6=Campbell |first6=Geneviève |last7=Heinicke |first7=Stefanie |last8=Humle |first8=Tatyana |last9=Kouakou |first9=Célestin Y. |last10=Kühl |first10=Hjalmar S. |last11=Ordaz-Németh |first11=Isabel |last12=Pereira |first12=Henrique M. |last13=Rainer |first13=Helga |last14=Refisch |first14=Johannes |last15=Sonter |first15=Laura |last16=Sop |first16=Tenekwetche |pmid=38569032 |bibcode=2024SciA...10L.335J }}</ref> | |||
== See also == | |||
* {{Portal inline|Mammals}} | |||
* '']'' (2015 PBS film) | |||
* ] | |||
* ] | |||
* ] | |||
* ] | |||
* ] (for notable non-fictional non-human apes) | |||
* ] | |||
* ] | * ] | ||
* ] from the ] | |||
{{div col end}} | |||
{{Clear}} | |||
==Notes== | ==Notes== | ||
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==References== | ==References== | ||
{{Reflist |
{{Reflist}} | ||
===Literature cited=== | |||
{{refbegin}} | |||
* {{Cite book |last=Dawkins |first=R. |year=2005 |title=The Ancestor's Tale |edition=p/b |location=London |publisher=Phoenix (Orion Books) |isbn=978-0-7538-1996-8}} | |||
* {{Cite book |last=Dixson |first=A. F. |year=1981 |title=The Natural History of the Gorilla |location=London |publisher=Weidenfeld & Nicolson |isbn=978-0-297-77895-0}} | |||
* {{Cite book |last=Mishler |first=Brent D |year=2009 |editor-last=Ayala |editor-first=F. J. |editor2-last=Arp |editor2-first=R. |contribution=Species are not uniquely real biological entities |title=Contemporary Debates in Philosophy of Biology |pages=110–122 |isbn=978-1-4443-1492-2 |doi=10.1002/9781444314922.ch6 |name-list-style=amp}} | |||
* {{Cite journal |last=Stace |first=C. A. |author-link=Clive A. Stace |year=2010 |title=Classification by molecules: what's in it for field botanists? |journal=Watsonia |volume=28 |pages=103–122 |url=http://www.watsonia.org.uk/Wats28p103.pdf |access-date=7 February 2010 |url-status=dead |archive-url=https://web.archive.org/web/20110726104027/https://www.watsonia.org.uk/Wats28p103.pdf |archive-date=26 July 2011}} | |||
* {{cite book |last=Terry |first=M. W. |chapter=Use of common and scientific nomenclature to designate laboratory primates |editor-first=A. M. |editor-last=Schrier |title=Behavioral Primatology: Advances in Research and Theory |volume=1 |location=Hillsdale, N.J., US |publisher=Lawrence Erlbaum |year=1977}} | |||
{{refend}} | |||
==External links== | ==External links== | ||
{{Sister project links |
{{Sister project links}} | ||
*{{Wikispecies-inline|Hominoidea}} | * {{Wikispecies-inline|Hominoidea}} | ||
*{{Wikibooks-inline|Dichotomous Key|Hominoidea}} | * {{Wikibooks-inline|Dichotomous Key|Hominoidea}} | ||
* {{cite journal |author=Pilbeam D. | |
* {{cite journal |author=Pilbeam D. |author-link=David Pilbeam |title=Hominoid systematics: The soft evidence |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=97 |issue=20 |pages=10684–6 |date=September 2000 |pmid=10995486 |pmc=34045 |doi=10.1073/pnas.210390497 |bibcode=2000PNAS...9710684P |doi-access=free }} Agreement between cladograms based on molecular and anatomical data. | ||
* – ], ] (August 2016). | * – ], ] (August 2016). | ||
{{apes}} | |||
{{Apes}} | |||
{{Notable apes}} | |||
{{Primates}} | |||
{{Haplorhini|Ho.}} | |||
{{Taxonbar|from=Q102470}} | |||
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Latest revision as of 06:07, 14 December 2024
Branch of primates "Hominoid" redirects here. Not to be confused with Hominid. This article is about the branch of primates. For other uses, see Ape (disambiguation).
Hominoids Apes Temporal range: Miocene-Holocene | |
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Male chimpanzee (Pan troglodytes) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Primates |
Suborder: | Haplorhini |
Infraorder: | Simiiformes |
Parvorder: | Catarrhini |
Superfamily: | Hominoidea Gray, 1825 |
Type species | |
Homo sapiens Linnaeus, 1758 | |
Families | |
Apes (collectively Hominoidea /hɒmɪˈnɔɪdi.ə/) are a clade of Old World simians native to sub-Saharan Africa and Southeast Asia (though they were more widespread in Africa, most of Asia, and Europe in prehistory, and counting humans are found globally). Apes are more closely related to Old World monkeys (family Cercopithecidae) than to the New World monkeys (Platyrrhini) with both Old World monkeys and apes placed in the clade Catarrhini. Apes do not have tails due to a mutation of the TBXT gene. In traditional and non-scientific use, the term ape can include tailless primates taxonomically considered Cercopithecidae (such as the Barbary ape and black ape), and is thus not equivalent to the scientific taxon Hominoidea. There are two extant branches of the superfamily Hominoidea: the gibbons, or lesser apes; and the hominids, or great apes.
- The family Hylobatidae, the lesser apes, include four genera and a total of 20 species of gibbon, including the lar gibbon and the siamang, all native to Asia. They are highly arboreal and bipedal on the ground. They have lighter bodies and smaller social groups than great apes.
- The family Hominidae (hominids), the great apes, include four genera comprising three extant species of orangutans and their subspecies, two extant species of gorillas and their subspecies, two extant species of chimpanzees and their subspecies, and humans in a single extant subspecies.
Except for gorillas and humans, hominoids are agile climbers of trees. Apes eat a variety of plant and animal foods, with the majority of food being plant foods, which can include fruits, leaves, stalks, roots and seeds, including nuts and grass seeds. Human diets are sometimes substantially different from that of other hominoids due in part to the development of technology and a wide range of habitation.
All non-human hominoids are rare and threatened with extinction. The main threat is habitat loss, though some populations are further imperiled by hunting. The great apes of Africa are also facing threat from the Ebola virus.
Name and terminology
"Ape", from Old English apa, is a word of uncertain origin. The term has a history of rather imprecise usage—and of comedic or punning usage in the vernacular. Its earliest meaning was generally of any non-human anthropoid primate, as is still the case for its cognates in other Germanic languages. Later, after the term "monkey" had been introduced into English, "ape" was specialized to refer to a tailless (therefore exceptionally human-like) primate. Thus, the term "ape" obtained two different meanings, as shown in the 1911 Encyclopædia Britannica entry: it could be used as a synonym for "monkey" and it could denote the tailless human-like primate in particular.
Some, or recently all, hominoids are also called "apes", but the term is used broadly and has several different senses within both popular and scientific settings. "Ape" has been used as a synonym for "monkey" or for naming any primate with a human-like appearance, particularly those without a tail. Biologists have traditionally used the term "ape" to mean a member of the superfamily Hominoidea other than humans, but more recently to mean all members of Hominoidea. So "ape"—not to be confused with "great ape"—now becomes another word for hominoid including humans.
The taxonomic term hominoid is derived from, and intended as encompassing, the hominids, the family of great apes. Both terms were introduced by Gray (1825). The term hominins is also due to Gray (1824), intended as including the human lineage (see also Hominidae#Terminology, Human taxonomy).
The distinction between apes and monkeys is complicated by the traditional paraphyly of monkeys: Apes emerged as a sister group of Old World Monkeys in the catarrhines, which are a sister group of New World Monkeys. Therefore, cladistically, apes, catarrhines and related contemporary extinct groups such as Parapithecidae are monkeys as well, for any consistent definition of "monkey". "Old World monkey" may also legitimately be taken to be meant to include all the catarrhines, including apes and extinct species such as Aegyptopithecus, in which case the apes, Cercopithecoidea and Aegyptopithecus emerged within the Old World monkeys.
The primates called "apes" today became known to Europeans after the 18th century. As zoological knowledge developed, it became clear that taillessness occurred in a number of different and otherwise distantly related species. Sir Wilfrid Le Gros Clark was one of those primatologists who developed the idea that there were trends in primate evolution and that the extant members of the order could be arranged in an "ascending series", leading from "monkeys" to "apes" to humans. Within this tradition "ape" came to refer to all members of the superfamily Hominoidea except humans. As such, this use of "apes" represented a paraphyletic grouping, meaning that, even though all species of apes were descended from a common ancestor, this grouping did not include all the descendant species, because humans were excluded from being among the apes.
Traditionally, the English-language vernacular name "apes" does not include humans, but phylogenetically, humans (Homo) form part of the family Hominidae within Hominoidea. Thus, there are at least three common, or traditional, uses of the term "ape": non-specialists may not distinguish between "monkeys" and "apes", that is, they may use the two terms interchangeably; or they may use "ape" for any tailless monkey or non-human hominoid; or they may use the term "ape" to just mean the non-human hominoids.
Modern taxonomy aims for the use of monophyletic groups for taxonomic classification; Some literature may now use the common name "ape" to mean all members of the superfamily Hominoidea, including humans. For example, in his 2005 book, Benton wrote "The apes, Hominoidea, today include the gibbons and orang-utan ... the gorilla and chimpanzee ... and humans". Modern biologists and primatologists refer to apes that are not human as "non-human" apes. Scientists broadly, other than paleoanthropologists, may use the term "hominin" to identify the human clade, replacing the term "hominid". See terminology of primate names.
See below, History of hominoid taxonomy, for a discussion of changes in scientific classification and terminology regarding hominoids.
Evolution
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Although the hominoid fossil record is still incomplete and fragmentary, there is now enough evidence to provide an outline of the evolutionary history of humans. Previously, the divergence between humans and other extant hominoids was thought to have occurred 15 to 20 million years ago, and several species of that time period, such as Ramapithecus, were once thought to be hominins and possible ancestors of humans. But, later fossil finds indicated that Ramapithecus was more closely related to the orangutan; and new biochemical evidence indicates that the last common ancestor of humans and non-hominins (that is, the chimpanzees) occurred between 5 and 10 million years ago, and probably nearer the lower end of that range (more recent); see Chimpanzee–human last common ancestor (CHLCA).
Taxonomic classification and phylogeny
Main article: List of hominoidsGenetic analysis combined with fossil evidence indicates that hominoids diverged from the Old World monkeys about 25 million years ago (mya), near the Oligocene–Miocene boundary. The gibbons split from the rest about 18 mya, and the hominid splits happened 14 mya (Pongo), 7 mya (Gorilla), and 3–5 mya (Homo & Pan). In 2015, a new genus and species were described, Pliobates cataloniae, which lived 11.6 mya, and appears to predate the split between Hominidae and Hylobatidae.
Crown Catharrhini (31) |
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Catarrhini (31.0 Mya) |
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The families, and extant genera and species of hominoids are:
- Superfamily Hominoidea
- Family Hominidae: hominids ("great apes")
- Genus Pongo: orangutans
- Bornean orangutan, P. pygmaeus
- Sumatran orangutan, P. abelii
- Tapanuli orangutan, P. tapanuliensis
- Genus Gorilla: gorillas
- Western gorilla, G. gorilla
- Eastern gorilla, G. beringei
- Genus Homo: humans
- Human, H. sapiens
- Genus Pan: chimpanzees
- Chimpanzee, P. troglodytes
- Bonobo, P. paniscus
- Genus Pongo: orangutans
- Family Hylobatidae: gibbons ("lesser apes")
- Genus Hylobates
- Lar gibbon or white-handed gibbon, H. lar
- Bornean white-bearded gibbon, H. albibarbis
- Agile gibbon or black-handed gibbon, H. agilis
- Western grey gibbon or Abbott's grey gibbon, H. abbotti
- Eastern grey gibbon or northern grey gibbon, H. funereus
- Müller's gibbon or southern grey gibbon, H. muelleri
- Silvery gibbon, H. moloch
- Pileated gibbon or capped gibbon, H. pileatus
- Kloss's gibbon or Mentawai gibbon or bilou, H. klossii
- Genus Hoolock
- Western hoolock gibbon, H. hoolock
- Eastern hoolock gibbon, H. leuconedys
- Skywalker hoolock gibbon, H. tianxing
- Genus Symphalangus
- Siamang, S. syndactylus
- Genus Nomascus
- Northern buffed-cheeked gibbon, N. annamensis
- Black crested gibbon, N. concolor
- Eastern black crested gibbon, N. nasutus
- Hainan black crested gibbon, N. hainanus
- Southern white-cheeked gibbon N. siki
- White-cheeked crested gibbon, N. leucogenys
- Yellow-cheeked gibbon, N. gabriellae
- Genus Hylobates
- Family Hominidae: hominids ("great apes")
History of hominoid taxonomy
Further information: Human taxonomy § HistoryThe history of hominoid taxonomy is complex and somewhat confusing. Recent evidence has changed our understanding of the relationships between the hominoids, especially regarding the human lineage; and the traditionally used terms have become somewhat confused. Competing approaches to methodology and terminology are found among current scientific sources. Over time, authorities have changed the names and the meanings of names of groups and subgroups as new evidence — that is, new discoveries of fossils and tools and of observations in the field, plus continual comparisons of anatomy and DNA sequences — has changed the understanding of relationships between hominoids. There has been a gradual demotion of humans from being 'special' in the taxonomy to being one branch among many. This recent turmoil (of history) illustrates the growing influence on all taxonomy of cladistics, the science of classifying living things strictly according to their lines of descent.
Today, there are eight extant genera of hominoids. They are the four genera in the family Hominidae, namely Homo, Pan, Gorilla, and Pongo; plus four genera in the family Hylobatidae (gibbons): Hylobates, Hoolock, Nomascus and Symphalangus. (The two subspecies of hoolock gibbons were recently moved from the genus Bunopithecus to the new genus Hoolock and re-ranked as species; a third species was described in January 2017).
In 1758, Carl Linnaeus, relying on second- or third-hand accounts, placed a second species in Homo along with H. sapiens: Homo troglodytes ("cave-dwelling man"). Although the term "Orang Outang" is listed as a variety – Homo sylvestris – under this species, it is nevertheless not clear to which animal this name refers, as Linnaeus had no specimen to refer to, hence no precise description. Linnaeus may have based Homo troglodytes on reports of mythical creatures, then-unidentified simians, or Asian natives dressed in animal skins. Linnaeus named the orangutan Simia satyrus ("satyr monkey"). He placed the three genera Homo, Simia and Lemur in the order of Primates.
The troglodytes name was used for the chimpanzee by Blumenbach in 1775, but moved to the genus Simia. The orangutan was moved to the genus Pongo in 1799 by Lacépède.
Linnaeus's inclusion of humans in the primates with monkeys and apes was troubling for people who denied a close relationship between humans and the rest of the animal kingdom. Linnaeus's Lutheran archbishop had accused him of "impiety". In a letter to Johann Georg Gmelin dated 25 February 1747, Linnaeus wrote:
It is not pleasing to me that I must place humans among the primates, but man is intimately familiar with himself. Let's not quibble over words. It will be the same to me whatever name is applied. But I desperately seek from you and from the whole world a general difference between men and simians from the principles of Natural History. I certainly know of none. If only someone might tell me one! If I called man a simian or vice versa I would bring together all the theologians against me. Perhaps I ought to, in accordance with the law of Natural History.
Accordingly, Johann Friedrich Blumenbach in the first edition of his Manual of Natural History (1779), proposed that the primates be divided into the Quadrumana (four-handed, i.e. apes and monkeys) and Bimana (two-handed, i.e. humans). This distinction was taken up by other naturalists, most notably Georges Cuvier. Some elevated the distinction to the level of order.
However, the many affinities between humans and other primates – and especially the "great apes" – made it clear that the distinction made no scientific sense. In his 1871 book The Descent of Man, and Selection in Relation to Sex, Charles Darwin wrote:
The greater number of naturalists who have taken into consideration the whole structure of man, including his mental faculties, have followed Blumenbach and Cuvier, and have placed man in a separate Order, under the title of the Bimana, and therefore on an equality with the orders of the Quadrumana, Carnivora, etc. Recently many of our best naturalists have recurred to the view first propounded by Linnaeus, so remarkable for his sagacity, and have placed man in the same Order with the Quadrumana, under the title of the Primates. The justice of this conclusion will be admitted: for in the first place, we must bear in mind the comparative insignificance for classification of the great development of the brain in man, and that the strongly marked differences between the skulls of man and the Quadrumana (lately insisted upon by Bischoff, Aeby, and others) apparently follow from their differently developed brains. In the second place, we must remember that nearly all the other and more important differences between man and the Quadrumana are manifestly adaptive in their nature, and relate chiefly to the erect position of man; such as the structure of his hand, foot, and pelvis, the curvature of his spine, and the position of his head.
Changes in taxonomy and terminology
See also: Hominidae and Human taxonomyHumans the non-apes: Until about 1960, taxonomists typically divided the superfamily Hominoidea into two families. The science community treated humans and their extinct relatives as the outgroup within the superfamily; that is, humans were considered as quite distant from kinship with the "apes". Humans were classified as the family Hominidae and were known as the "hominids". All other hominoids were known as "apes" and were referred to the family Pongidae. | |
The "great apes" in Pongidae: The 1960s saw the methodologies of molecular biology applied to primate taxonomy. Goodman's 1964 immunological study of serum proteins led to re-classifying the hominoids into three families: the humans in Hominidae; the great apes in Pongidae; and the "lesser apes" (gibbons) in Hylobatidae. However, this arrangement had two trichotomies: Pan, Gorilla, and Pongo of the "great apes" in Pongidae, and Hominidae, Pongidae, and Hylobatidae in Hominoidea. These presented a puzzle; scientists wanted to know which genus speciated first from the common hominoid ancestor. | |
Gibbons the outgroup: New studies indicated that gibbons, not humans, are the outgroup within the superfamily Hominoidea, meaning: the rest of the hominoids are more closely related to each other than (any of them) are to the gibbons. With this splitting, the gibbons (Hylobates, et al.) were isolated after moving the great apes into the same family as humans. Now the term "hominid" encompassed a larger collective taxa within the family Hominidae. With the family trichotomy settled, scientists could now work to learn which genus is 'least' related to the others in the subfamily Ponginae. | |
Orangutans the outgroup: Investigations comparing humans and the three other hominid genera disclosed that the African apes (chimpanzees and gorillas) and humans are more closely related to each other than any of them are to the Asian orangutans (Pongo); that is, the orangutans, not humans, are the outgroup within the family Hominidae. This led to reassigning the African apes to the subfamily Homininae with humans—which presented a new three-way split: Homo, Pan, and Gorilla. | |
Hominins: In an effort to resolve the trichotomy, while preserving the nostalgic "outgroup" status of humans, the subfamily Homininae was divided into two tribes: Gorillini, comprising genus Pan and genus Gorilla; and Hominini, comprising genus Homo (the humans). Humans and close relatives now began to be known as "hominins", that is, of the tribe Hominini. Thus, the term "hominin" succeeded to the previous use of "hominid", which meaning had changed with changes in Hominidae (see above: 3rd graphic, "Gibbons the outgroup"). | |
Gorillas the outgroup: New DNA comparisons now provided evidence that gorillas, not humans, are the outgroup in the subfamily Homininae; this suggested that chimpanzees should be grouped with humans in the tribe Hominini, but in separate subtribes. Now the name "hominin" delineated Homo plus those earliest Homo relatives and ancestors that arose after the divergence from the chimpanzees. (Humans are no longer recognized as an outgroup, but are a branch, deep in the tree of the pre-1960s ape group). | |
Speciation of gibbons: Later DNA comparisons disclosed previously unknown speciation of genus Hylobates (gibbons) into four genera: Hylobates, Hoolock, Nomascus, and Symphalangus. The ordering of speciation of these four genera are being investigated as of 2022. |
Characteristics
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The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to brachiate through trees. Their wrists are ball and socket joints as an evolutionary adaptation to their arboreal lifestyle. Generally smaller than the African apes, the largest gibbon, the siamang, weighs up to 14 kg (31 lb); in comparison, the smallest "great ape", the bonobo, is 34 to 60 kg (75 to 132 lb).
The superfamily Hominoidea falls within the parvorder Catarrhini, which also includes the Old World monkeys of Africa and Eurasia. Within this grouping, the two families Hylobatidae and Hominidae can be distinguished from Old World monkeys by the number of cusps on their molars; hominoids have five in the "Y-5" molar pattern, whereas Old World monkeys have only four in a bilophodont pattern.
Further, in comparison with Old World monkeys, hominoids are noted for: more mobile shoulder joints and arms due to the dorsal position of the scapula; broader ribcages that are flatter front-to-back; and a shorter, less mobile spine, with greatly reduced caudal (tail) vertebrae—resulting in complete loss of the tail in extant hominoid species. These are anatomical adaptations, first, to vertical hanging and swinging locomotion (brachiation) and, later, to developing balance in a bipedal pose. Note there are primates in other families that also lack tails, and at least one, the pig-tailed langur, is known to walk significant distances bipedally. The front of the ape skull is characterised by its sinuses, fusion of the frontal bone, and by post-orbital constriction.
Distinction from monkeys
See also: Monkey § Historical and modern terminologyCladistically, apes, catarrhines, and extinct species such as Aegyptopithecus and Parapithecidaea, are monkeys, so one can only specify ape features not present in other monkeys.
Unlike most monkeys, apes do not possess a tail. Monkeys are more likely to be in trees and use their tails for balance. While the great apes are considerably larger than monkeys, gibbons (lesser apes) are smaller than some monkeys. Apes are considered to be more intelligent than monkeys, which are considered to have more primitive brains.
The enzyme urate oxidase has become inactive in all apes, its function having been lost in two primate lineages during the middle Miocene; first in the common ancestors of Hominidae, and later in the common ancestor of Hylobatidae. It has been hypothesized that in both incidents it was a mutation that occurred in apes living in Europe when the climate was getting colder, leading to starvation during winter. The mutation changed the biochemistry of the apes and made it easier to accumulate fat, which allowed the animals to survive longer periods of starvation. When they migrated to Asia and Africa, this genetic trait remained.
Behaviour
Major studies of behaviour in the field were completed on the three better-known "great apes", for example by Jane Goodall, Dian Fossey and Birutė Galdikas. These studies have shown that in their natural environments, the non-human hominoids show sharply varying social structure: gibbons are monogamous, territorial pair-bonders, orangutans are solitary, gorillas live in small troops with a single adult male leader, while chimpanzees live in larger troops with bonobos exhibiting promiscuous sexual behaviour. Their diets also vary; gorillas are foliovores, while the others are all primarily frugivores, although the common chimpanzee hunts for meat. Foraging behaviour is correspondingly variable.
In November 2023, scientists reported, for the first time, evidence that groups of primates, including apes, and, particularly bonobos, are capable of cooperating with each other.
Diet
Apart from humans and gorillas, apes eat a predominantly frugivorous diet, mostly fruit, but supplemented with a variety of other foods. Gorillas are predominantly folivorous, eating mostly stalks, shoots, roots and leaves with some fruit and other foods. Non-human apes usually eat a small amount of raw animal foods such as insects or eggs. In the case of humans, migration and the invention of hunting tools and cooking has led to an even wider variety of foods and diets, with many human diets including large amounts of cooked tubers (roots) or legumes. Other food production and processing methods including animal husbandry and industrial refining and processing have further changed human diets. Humans and other apes occasionally eat other primates. Some of these primates are now close to extinction with habitat loss being the underlying cause.
Cognition
All the non-human hominoids are generally thought of as highly intelligent, and scientific study has broadly confirmed that they perform very well on a wide range of cognitive tests—though there is relatively little data on gibbon cognition. The early studies by Wolfgang Köhler demonstrated exceptional problem-solving abilities in chimpanzees, which Köhler attributed to insight. The use of tools has been repeatedly demonstrated; more recently, the manufacture of tools has been documented, both in the wild and in laboratory tests. Imitation is much more easily demonstrated in "great apes" than in other primate species. Almost all the studies in animal language acquisition have been done with "great apes", and though there is continuing dispute as to whether they demonstrate real language abilities, there is no doubt that they involve significant feats of learning. Chimpanzees in different parts of Africa have developed tools that are used in food acquisition, demonstrating a form of animal culture.
Threats and conservation
All non-human hominoids are rare and threatened with extinction. The eastern hoolock gibbon is the least threatened, only being vulnerable to extinction. Five gibbon species are critically endangered, as are all species of orangutan and gorilla. The remaining species of gibbon, the bonobo, and all four subspecies of chimpanzees are endangered. The chief threat to most of the endangered species is loss of tropical rainforest habitat, though some populations are further imperiled by hunting for bushmeat. The great apes of Africa are also facing threat from the Ebola virus. Currently considered to be the greatest threat to survival of African apes, Ebola infection is responsible for the death of at least one third of all gorillas and chimpanzees since 1990.
All the species of great apes in Africa, are considered endangered. Hunting, logging, agricultural expansion and mining are among the main threats. Recently mining has expanded due to the energy transition. According to researchers "This means that current climate solutions could lead to more industrialization in these places, which could worsen the climate crisis". The Sustainable Critical Minerals Alliance was created for solve problems like this.
See also
- Mammals portal
- Dawn of Humanity (2015 PBS film)
- Great Ape Project
- Great Apes Survival Partnership
- International Primate Day
- Kinshasa Declaration on Great Apes
- List of individual apes (for notable non-fictional non-human apes)
- List of fictional primates
- List of primates by population
- World Declaration on Great Apes from the Great Ape Project
Notes
- Although Dawkins is clear that he uses "apes" for Hominoidea, he also uses "great apes" in ways which exclude humans. Thus in Dawkins 2005: "Long before people thought in terms of evolution ... great apes were often confused with humans" (p. 114); "gibbons are faithfully monogamous, unlike the great apes which are our closer relatives" (p. 126).
- The hypothetical Proto-Germanic form is given as *apōn (F. Kluge, Etymologisches Wörterbuch der Deutschen Sprache (2002), online version, s.v. "Affe"; V. Orel, A handbook of Germanic etymology (2003), s.v. "*apōn" or as *apa(n) (Online Etymology Dictionary (2001–2014), s.v. "ape"; M. Philippa, F. Debrabandere, A. Quak, T. Schoonheim & N. van der Sijs, Etymologisch woordenboek van het Nederlands (2003–2009), s.v. "aap"). Perhaps ultimately derived from a non-Indo-European language, the word might be a direct borrowing from Celtic, or perhaps from Slavic, although in both cases it is also argued that the borrowing, if it took place, went in the opposite direction.
- "Any simian known on the Mediterranean during the Middle Ages; monkey or ape"; cf. ape-ward: "a juggler who keeps a trained monkey for the amusement of the crowd." (Middle English Dictionary, s.v. "ape").
- Dawkins 2005; for example "ll apes except humans are hairy" (p. 99), "mong the apes, gibbons are second only to humans" (p. 126).
- Definitions of paraphyly vary; for the one used here see e.g. Stace 2010, pp. 106
- Definitions of monophyly vary; for the one used here see e.g. Mishler 2009, pp. 114
References
- Gray, J. E. "An outline of an attempt at the disposition of Mammalia into tribes and families, with a list of the genera apparently appertaining to each tribe". Annals of Philosophy. New Series. 10: 337–344. Archived from the original on 27 April 2022. Retrieved 27 April 2022.
- Xia, Bo; Zhang, Weimin; Wudzinska, Aleksandra; Huang, Emily; Brosh, Ran; Pour, Maayan; Miller, Alexander; Dasen, Jeremy S.; Maurano, Matthew T.; Kim, Sang Y.; Boeke, Jef D. (16 September 2021). "The genetic basis of tail-loss evolution in humans and apes". bioRxiv 10.1101/2021.09.14.460388.
- Weisberger, Mindy (23 March 2024). "Why don't humans have tails? Scientists find answers in an unlikely place". CNN. Archived from the original on 24 March 2024. Retrieved 24 March 2024.
- ^ Dixson 1981, pp. 13.
- Grehan, J. R. (2006). "Mona Lisa smile: the morphological enigma of human and great ape evolution". Anatomical Record. 289B (4): 139–157. doi:10.1002/ar.b.20107. PMID 16865704.
- ^ Benton, M. J. (2005). Vertebrate Palaeontology. Wiley-Blackwell. ISBN 978-0-632-05637-8. Archived from the original on 3 April 2023. Retrieved 10 July 2011., p. 371
- Rush, J. (23 January 2015). "Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn". The Independent. Archived from the original on 30 March 2015. Retrieved 26 March 2015.
- Terry 1977, pp. 3.
- Terry 1977, pp. 3–4.
- ^ Chisholm, Hugh, ed. (1911). "Ape" . Encyclopædia Britannica. Vol. 2 (11th ed.). Cambridge University Press. p. 160.
- Gray, JE. "An outline of an attempt at the disposition of Mammalia into tribes and families, with a list of the genera apparently appertaining to each tribe". Annals of Philosophy. New Series. 10: 337–344. Archived from the original on 27 April 2022. Retrieved 27 April 2022.
- Osman Hill, W. C. (1953). Primates Comparative Anatomy and Taxonomy I—Strepsirhini. Edinburgh Univ Pubs Science & Maths, No 3. Edinburgh University Press. p. 53. OCLC 500576914.
- Martin, W. C. L. (1841). A General Introduction to the Natural History of Mammiferous Animals, With a Particular View of the Physical History of man, and the More Closely Allied Genera of the Order Quadrumana, or Monkeys. London: Wright and Co. printers. pp. 340, 361.
- Geoffroy Saint-Hilaire, M. É. (1812). "Tableau des quadrumanes, ou des animaux composant le premier ordre de la classe des Mammifères". Annales du Muséum d'Histoire Naturelle. 19. Paris: 85–122. Archived from the original on 27 March 2019. Retrieved 16 July 2019.
- Bugge, J. (1974). "Chapter 4". Cells Tissues Organs. 87 (Suppl. 62): 32–43. doi:10.1159/000144209. ISSN 1422-6405.
- Springer; D. H. (1 July 2011). An Introduction to Zoology: Investigating the Animal World. Jones & Bartlett Publishers. p. 536. ISBN 978-0-7637-5286-6.
Through careful study taxonomists today struggle to eliminate polyphyletic and paraphyletic groups and taxons, reclassifying their members into appropriate monophyletic taxa
- "Fossils may pinpoint critical split between apes and monkeys". 15 May 2013. Archived from the original on 16 December 2022. Retrieved 30 June 2022.
- Rossie, J. B.; Hill, A. (2018). "A new species of Simiolus from the middle Miocene of the Tugen Hills, Kenya". Journal of Human Evolution. 125: 50–58. Bibcode:2018JHumE.125...50R. doi:10.1016/j.jhevol.2018.09.002. PMID 30502897. S2CID 54625375.
- Rasmussen, D. T.; Friscia, A. R.; Gutierrez, M.; et al. (2019). "Primitive Old World monkey from the earliest Miocene of Kenya and the evolution of cercopithecoid bilophodonty". Proceedings of the National Academy of Sciences. 116 (13): 6051–6056. Bibcode:2019PNAS..116.6051R. doi:10.1073/pnas.1815423116. PMC 6442627. PMID 30858323.
- Alba, D. M.; Fortuny, J.; Moyà-Solà, S. (2010). "Enamel thickness in the Middle Miocene great apes Anoiapithecus, Pierolapithecus and Dryopithecus". Proceedings of the Royal Society of London B: Biological Sciences. 277 (1691): 2237–2245. doi:10.1098/rspb.2010.0218. ISSN 0962-8452. PMC 2880156. PMID 20335211.
- Grabowski, M.; Jungers, W. L. (2017). "Evidence of a chimpanzee-sized ancestor of humans but a gibbon-sized ancestor of apes". Nature Communications. 8 (1): 880. Bibcode:2017NatCo...8..880G. doi:10.1038/s41467-017-00997-4. ISSN 2041-1723. PMC 5638852. PMID 29026075.
- "A new primate species at the root of the tree of extant hominoids". 29 October 2015. Archived from the original on 29 October 2015. Retrieved 29 October 2015.
- Nengo, I.; Tafforeau, P.; Gilbert, C. C.; et al. (2017). "New infant cranium from the African Miocene sheds light on ape evolution" (PDF). Nature. 548 (7666): 169–174. Bibcode:2017Natur.548..169N. doi:10.1038/nature23456. PMID 28796200. S2CID 4397839. Archived from the original (PDF) on 22 July 2018. Retrieved 15 July 2019.
- Dixson 1981, p. 16.
- ^ Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. pp. 178–184. ISBN 0-801-88221-4. OCLC 62265494.
- Cochrane, J. (2 November 2017). "New Orangutan Species Could Be the Most Endangered Great Ape". The New York Times. Archived from the original on 17 April 2018. Retrieved 3 November 2017.
- ^ Wilson, Don E.; Cavallini, Paolo (2013). Handbook of the Mammals of the World. Barcelona: Lynx Edicions. ISBN 978-84-96553-89-7. OCLC 1222638259.
- ^ Mootnick, A.; Groves, C. P. (2005). "A new generic name for the hoolock gibbon (Hylobatidae)". International Journal of Primatology. 26 (4): 971–976. doi:10.1007/s10764-005-5332-4. S2CID 8394136.
- Frängsmyr, T.; Lindroth, S.; Eriksson, G.; Broberg, G. (1983). Linnaeus, the man and his work. Berkeley and Los Angeles: University of California Press. ISBN 978-0-7112-1841-3., p. 166
- "Letter, Carl Linnaeus to Johann Georg Gmelin. Uppsala, Sweden, 25 February 1747". Swedish Linnaean Society. Archived from the original on 27 February 2009. Retrieved 4 February 2009.
- Darwin, C. (1871). The Descent of Man. Barnes & Noble. ISBN 978-0-7607-7814-2.
- G. G., Simpson (1945). "The principles of classification and a classification of mammals". Bulletin of the American Museum of Natural History. 85: 1–350.
- Goodman, M. (1964). "Man's place in the phylogeny of the primates as reflected in serum proteins". In Washburn, S. L. (ed.). Classification and Human Evolution. Chicago: Aldine. pp. 204–234.
- Goodman, M. (1974). "Biochemical evidence on hominid phylogeny". Annual Review of Anthropology. 3 (1): 203–228. doi:10.1146/annurev.an.03.100174.001223.
- Goodman, M.; Tagle, D. A.; Fitch, D. H.; et al. (1990). "Primate evolution at the DNA level and a classification of hominoids". Journal of Molecular Evolution. 30 (3): 260–266. Bibcode:1990JMolE..30..260G. doi:10.1007/BF02099995. PMID 2109087. S2CID 2112935.
- Call, J.; Tomasello, M. (2007). The Gestural Communication of Apes and Monkeys. Taylor & Francis Group/Lawrence Erlbaum Associates.
- Johnson, R. J.; Lanaspa, M. A.; Gaucher, E. A. (2011). "Uric acid: A Danger Signal from the RNA World that may have a role in the Epidemic of Obesity, Metabolic Syndrome and CardioRenal Disease: Evolutionary Considerations". Seminars in Nephrology. 31 (5): 394–399. doi:10.1016/j.semnephrol.2011.08.002. PMC 3203212. PMID 22000645.
- Johnson, Richard J.; Andrews, Peter (2015). "The Fat Gene". Scientific American. 313 (4): 64–69. Bibcode:2015SciAm.313d..64J. doi:10.1038/scientificamerican1015-64.
- Zimmer, Carl (16 November 2023). "Scientists Find First Evidence That Groups of Apes Cooperate - Some bonobos are challenging the notion that humans are the only primates capable of group-to-group alliances". The New York Times. Archived from the original on 16 November 2023. Retrieved 17 November 2023.
- Samuni, Liran; et al. (16 November 2023). "Cooperation across social borders in bonobos". Science. 382 (6672): 805–809. Bibcode:2023Sci...382..805S. doi:10.1126/science.adg0844. PMID 37972165. Archived from the original on 17 November 2023. Retrieved 17 November 2023.
- Lawton, G. (2 November 2016). "Every human culture includes cooking – this is how it began". New Scientist. Archived from the original on 29 July 2021. Retrieved 27 August 2021.
- Hoag, Hannah (2 December 2013). "Humans are becoming more carnivorous". Nature. doi:10.1038/nature.2013.14282. S2CID 183143537. Archived from the original on 29 November 2014. Retrieved 26 November 2014.
- Callaway, E. (13 October 2006). "Loving bonobos have a carnivorous dark side". New Scientist. Archived from the original on 29 October 2014. Retrieved 26 November 2014.
- M., Michael. "Chimpanzees over-hunt monkey prey almost to extinction". BBC Earth. Archived from the original on 6 June 2018. Retrieved 28 May 2018.
- "Extinction threat to monkeys and other primates due to habitat loss, hunting". Science Daily. Archived from the original on 28 May 2018. Retrieved 28 May 2018.
- McGrew, W. (1992). Chimpanzee Material Culture: Implications for Human Evolution.
- Rush, J. (23 January 2015). "Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn". The Independent. Archived from the original on 30 March 2015. Retrieved 26 March 2015.
- Rush, J. (23 January 2015). "Ebola virus 'has killed a third of world's gorillas and chimpanzees' – and could pose greatest threat to their survival, conservationists warn". The Independent. Archived from the original on 30 March 2015. Retrieved 26 March 2015.
- Junker, Jessica; Quoss, Luise; Valdez, Jose; Arandjelovic, Mimi; Barrie, Abdulai; Campbell, Geneviève; Heinicke, Stefanie; Humle, Tatyana; Kouakou, Célestin Y.; Kühl, Hjalmar S.; Ordaz-Németh, Isabel; Pereira, Henrique M.; Rainer, Helga; Refisch, Johannes; Sonter, Laura; Sop, Tenekwetche (3 April 2024). "Threat of mining to African great apes". Science Advances. 10 (14). Bibcode:2024SciA...10L.335J. doi:10.1126/sciadv.adl0335. PMID 38569032. Retrieved 19 September 2024.
Literature cited
- Dawkins, R. (2005). The Ancestor's Tale (p/b ed.). London: Phoenix (Orion Books). ISBN 978-0-7538-1996-8.
- Dixson, A. F. (1981). The Natural History of the Gorilla. London: Weidenfeld & Nicolson. ISBN 978-0-297-77895-0.
- Mishler, Brent D (2009). "Species are not uniquely real biological entities". In Ayala, F. J. & Arp, R. (eds.). Contemporary Debates in Philosophy of Biology. pp. 110–122. doi:10.1002/9781444314922.ch6. ISBN 978-1-4443-1492-2.
- Stace, C. A. (2010). "Classification by molecules: what's in it for field botanists?" (PDF). Watsonia. 28: 103–122. Archived from the original (PDF) on 26 July 2011. Retrieved 7 February 2010.
- Terry, M. W. (1977). "Use of common and scientific nomenclature to designate laboratory primates". In Schrier, A. M. (ed.). Behavioral Primatology: Advances in Research and Theory. Vol. 1. Hillsdale, N.J., US: Lawrence Erlbaum.
External links
- Data related to Hominoidea at Wikispecies
- Hominoidea at Wikibooks
- Pilbeam D. (September 2000). "Hominoid systematics: The soft evidence". Proc. Natl. Acad. Sci. U.S.A. 97 (20): 10684–6. Bibcode:2000PNAS...9710684P. doi:10.1073/pnas.210390497. PMC 34045. PMID 10995486. Agreement between cladograms based on molecular and anatomical data.
- Human Timeline (Interactive) – Smithsonian, National Museum of Natural History (August 2016).
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