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'''''Branchinecta''''' is a genus of ] in family Branchinectidae. It includes around 50 species,<ref name="ITIS"/><ref name="Rogers">{{cite journal |journal=] |volume=1126 |pages=35–51 |year=2006 |title=Three new species of ''Branchinecta'' (Crustacea: Branchiopoda: Anostraca) from the Nearctic |author=D. Christopher Rogers |url=http://www.mapress.com/zootaxa/2006f/z01126p051f.pdf |doi=10.11646/zootaxa.1126.1.3 }}</ref> found on all continents except ].<ref name="Rogers"/> ''Branchinecta gigas'', the giant fairy shrimp, is the largest species in the order, with a length of up to {{convert|10|cm|0}},<ref>{{cite journal |author=Geoffrey Fryer |year=1968 |journal=] |volume=177 |issue=1 |pages=19–34 |doi=10.1111/j.1095-8312.1966.tb00948.x |title=''Branchinecta gigas'' Lynch, a non-filter-feeding raptatory anostracan, with notes on the feeding habits of certain other anostracans |url=http://www3.interscience.wiley.com/journal/119867653/abstract|archive-url=https://archive.today/20130105114408/http://www3.interscience.wiley.com/journal/119867653/abstract|url-status=dead|archive-date=2013-01-05}}</ref> and '']'' lives at the highest altitude of any crustacean, at {{convert|5930|m}}, a record it shares with the ] '']''.<ref name="brushi"/> A new genus, '']'' was established in 2011 for two species previously placed in ''Branchinecta''.<ref>{{cite journal |author=D. Christopher Rogers |author2=Jorge S. Coronel |name-list-style=amp |year=2011 |title=A redescription of ''Branchinecta pollicifera'' Harding, 1940, and its placement in a new genus (Branchiopoda: Anostraca: Branchinectidae) |journal=] |volume=31 |issue=4 |pages=717–724 |doi=10.1651/10-3449.1|doi-access=free }}</ref> '''''Branchinecta''''' is a genus of ] in family ]. It includes around 50 species,<ref name="ITIS"/><ref name="Rogers">{{cite journal |journal=] |volume=1126 |pages=35–51 |year=2006 |title=Three new species of ''Branchinecta'' (Crustacea: Branchiopoda: Anostraca) from the Nearctic |author=D. Christopher Rogers |url=http://www.mapress.com/zootaxa/2006f/z01126p051f.pdf |doi=10.11646/zootaxa.1126.1.3 }}</ref> found on all continents except ].<ref name="Rogers"/> ''Branchinecta gigas'', the giant fairy shrimp, is the largest species in the order, with a length of up to {{convert|10|cm|0}},<ref>{{cite journal |author=Geoffrey Fryer |year=1968 |journal=] |volume=177 |issue=1 |pages=19–34 |doi=10.1111/j.1095-8312.1966.tb00948.x |title=''Branchinecta gigas'' Lynch, a non-filter-feeding raptatory anostracan, with notes on the feeding habits of certain other anostracans |url=http://www3.interscience.wiley.com/journal/119867653/abstract|archive-url=https://archive.today/20130105114408/http://www3.interscience.wiley.com/journal/119867653/abstract|url-status=dead|archive-date=2013-01-05}}</ref> and '']'' lives at the highest altitude of any crustacean, at {{convert|5930|m}}, a record it shares with the ] '']''.<ref name="brushi"/> A new genus, '']'' was established in 2011 for two species previously placed in ''Branchinecta''.<ref>{{cite journal |author=D. Christopher Rogers |author2=Jorge S. Coronel |name-list-style=amp |year=2011 |title=A redescription of ''Branchinecta pollicifera'' Harding, 1940, and its placement in a new genus (Branchiopoda: Anostraca: Branchinectidae) |journal=] |volume=31 |issue=4 |pages=717–724 |doi=10.1651/10-3449.1|doi-access=free }}</ref>

The vernal pool fairy shrimp (]) is a small freshwater crustacean (0.12 to 1.5 inches long) belonging to an ancient order of ], the ]. Like other anostraca, it has ] ] and eleven pairs of phyllopoda (swimming legs that also function as gills). The various Branchinecta species are generally distinguished by characteristics of the male’s ] and the size and shape of the female’s brood pouch. Branchinecta lynchi are distinguished by its medium antennae with curved rounded tips ; males have an elongated pair of antennae coming off the front of the head used to grasp the females during mating and the females have a short, pyriform brood pouch (Vollmar et al 2023). The basal segment outgrowth below and posterior to the pulvillus is ridgelike in ,B. lynchi and the bulge below the middle of the basal segment is typically smaller, more moundlike, and has fewer ] (none in some cases) (Belk et al 1990, pg. 256-257). Vernal pool fairy shrimp are found only in ] freshwater habitats, in a wide range of ], and have life histories adapted to the environmental conditions of these habitats. Branchinecta lynchi can be found in extremely small or marginal vernal pools (from a small puddle only 3cm deep and covering 0.56m^2 to 10 ha) that fill with water for just long enough to allow the individuals to hatch from ], reach sexual maturity, reproduce, and die (Eriksen and Belk 1999, pg. 93). The time to maturity and reproduction is temperature dependent, but in general the vernal pool fairy shrimp has an average of 18.0 days and 39.7 days, respectively.
*'']'' <small>Cesar, 1985</small> *'']'' <small>Cesar, 1985</small>
*'']'' <small>Maeda-Martínez, Obregón-Barboza & Dumont, 1992</small> ]<ref>{{Cite iucn | author = Baillie, J. | title = ''Branchinecta belki'' | volume = 2000 | page = e.T3043A9549316 | date = 2000 | doi = 10.2305/IUCN.UK.2000.RLTS.T3043A9549316.en }}</ref> *'']'' <small>Maeda-Martínez, Obregón-Barboza & Dumont, 1992</small> ]<ref>{{Cite iucn | author = Baillie, J. | title = ''Branchinecta belki'' | volume = 2000 | page = e.T3043A9549316 | date = 2000 | doi = 10.2305/IUCN.UK.2000.RLTS.T3043A9549316.en }}</ref>

Revision as of 18:24, 19 December 2023

Genus of small freshwater animals

Branchinecta
Branchinecta packardi
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Branchiopoda
Order: Anostraca
Family: Branchinectidae
Genus: Branchinecta
Verrill, 1869
Species

See text

Branchinecta is a genus of crustacean in family Branchinectidae. It includes around 50 species, found on all continents except Australia. Branchinecta gigas, the giant fairy shrimp, is the largest species in the order, with a length of up to 10 centimetres (4 in), and Branchinecta brushi lives at the highest altitude of any crustacean, at 5,930 metres (19,460 ft), a record it shares with the copepod Boeckella palustris. A new genus, Archaebranchinecta was established in 2011 for two species previously placed in Branchinecta.

The vernal pool fairy shrimp (Branchinecta lynchi) is a small freshwater crustacean (0.12 to 1.5 inches long) belonging to an ancient order of branchiopods, the Anostraca. Like other anostraca, it has stalked compound eyes and eleven pairs of phyllopoda (swimming legs that also function as gills). The various Branchinecta species are generally distinguished by characteristics of the male’s antennae and the size and shape of the female’s brood pouch. Branchinecta lynchi are distinguished by its medium antennae with curved rounded tips ; males have an elongated pair of antennae coming off the front of the head used to grasp the females during mating and the females have a short, pyriform brood pouch (Vollmar et al 2023). The basal segment outgrowth below and posterior to the pulvillus is ridgelike in ,B. lynchi and the bulge below the middle of the basal segment is typically smaller, more moundlike, and has fewer denticles (none in some cases) (Belk et al 1990, pg. 256-257). Vernal pool fairy shrimp are found only in ephemeral freshwater habitats, in a wide range of vernal pools, and have life histories adapted to the environmental conditions of these habitats. Branchinecta lynchi can be found in extremely small or marginal vernal pools (from a small puddle only 3cm deep and covering 0.56m^2 to 10 ha) that fill with water for just long enough to allow the individuals to hatch from cysts, reach sexual maturity, reproduce, and die (Eriksen and Belk 1999, pg. 93). The time to maturity and reproduction is temperature dependent, but in general the vernal pool fairy shrimp has an average of 18.0 days and 39.7 days, respectively.

References

  1. ^ "Branchinecta Verrill, 1869". Integrated Taxonomic Information System. Retrieved May 21, 2011.
  2. ^ D. Christopher Rogers (2006). "Three new species of Branchinecta (Crustacea: Branchiopoda: Anostraca) from the Nearctic" (PDF). Zootaxa. 1126: 35–51. doi:10.11646/zootaxa.1126.1.3.
  3. Geoffrey Fryer (1968). "Branchinecta gigas Lynch, a non-filter-feeding raptatory anostracan, with notes on the feeding habits of certain other anostracans". Proceedings of the Linnean Society of London. 177 (1): 19–34. doi:10.1111/j.1095-8312.1966.tb00948.x. Archived from the original on 2013-01-05.
  4. ^ Thomas A. Hegna & Eric A. Lazo-Wasem (2010). "Branchinecta brushi n. sp. (Branchiopoda: Anostraca: Branchinectidae) from a volcanic crater in northern Chile (Antofagasta Province): a new altitude record for crustaceans". Journal of Crustacean Biology. 30 (3): 445–464. doi:10.1651/09-3236.1.
  5. D. Christopher Rogers & Jorge S. Coronel (2011). "A redescription of Branchinecta pollicifera Harding, 1940, and its placement in a new genus (Branchiopoda: Anostraca: Branchinectidae)". Journal of Crustacean Biology. 31 (4): 717–724. doi:10.1651/10-3449.1.
  6. Baillie, J. (2000). "Branchinecta belki". IUCN Red List of Threatened Species. 2000: e.T3043A9549316. doi:10.2305/IUCN.UK.2000.RLTS.T3043A9549316.en.
  7. Inland Water Crustacean Specialist Group (1996). "Branchinecta conservatio". IUCN Red List of Threatened Species. 1996: e.T3045A9551064. doi:10.2305/IUCN.UK.1996.RLTS.T3045A9551064.en.
  8. Inland Water Crustacean Specialist Group (1996). "Branchinecta gigas". IUCN Red List of Threatened Species. 1996: e.T3041A9545649. doi:10.2305/IUCN.UK.1996.RLTS.T3041A9545649.en.
  9. Inland Water Crustacean Specialist Group (1996). "Branchinecta longiantenna". IUCN Red List of Threatened Species. 1996: e.T3046A9551833. doi:10.2305/IUCN.UK.1996.RLTS.T3046A9551833.en.
  10. Inland Water Crustacean Specialist Group (1996). "Branchinecta lynchi". IUCN Red List of Threatened Species. 1996: e.T3047A9552141. doi:10.2305/IUCN.UK.1996.RLTS.T3047A9552141.en.
  11. D. Christopher Rogers; Don Dasis & Daniel G. Murrow (2011). "A new species of Branchinecta (Crustacea: Anostraca) with comments on the large branchiopod crustaceans of Kansas" (PDF excerpt). Zootaxa. 2749: 62–68. doi:10.11646/zootaxa.2749.1.5.
  12. Maeda-Martinez, A.M. (1996). "Branchinecta mexicana". IUCN Red List of Threatened Species. 1996: e.T3044A9550338. doi:10.2305/IUCN.UK.1996.RLTS.T3044A9550338.en.
  13. Inland Water Crustacean Specialist Group (1996). "Branchinecta sandiegonensis". IUCN Red List of Threatened Species. 1996: e.T3048A9545435. doi:10.2305/IUCN.UK.1996.RLTS.T3048A9545435.en.

External links

Families of class Branchiopoda
Anostraca
Notostraca
Laevicaudata
Spinicaudata
Cyclestherida
Cladocera
Taxon identifiers
Branchinecta


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