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Theliderma intermedia

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Species of bivalve

Theliderma intermedia
Conservation status

Endangered  (IUCN 3.1)
CITES Appendix I (CITES)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Theliderma
Species: T. intermedia
Binomial name
Theliderma intermedia
(Conrad, 1836)
Synonyms
  • Quadrula intermedia (Conrad, 1836)
  • Unio intermedius Conrad, 1836
  • Quadrula biangulata Morrison, 1942
  • Unio tuberosus subsp. perlobatus de Gregorio, 1914

Theliderma intermedia, the Cumberland monkeyface pearly mussel or Cumberland monkeyface, is a species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Tennessee and Virginia in the United States. Historically widespread in the upper Tennessee River system, it populations have been reduced by habitat destruction and pollution. It now only occurs in two tributaries: the Duck and Powell Rivers. It is a federally listed endangered species.

This species is greenish yellow in color. It can reach at least 35 years of age. Like other mussels, it has larvae called glochidia that lodge in the gills of fish to develop into juvenile mussels. Hosts for this species include the streamline chub (Erimystax dissimilis) and blotched chub (Erimystax insignis).

This mussel has been extirpated from the Elk River. There is still a population in the Powell River, and the population in the Duck River appears to be viable.

  • The Cumberland Monkeyface PearlyMussel is a freshwater mussel species.
  • The Cumberland Monkeyface PearlyMussel is a medium sized mussel and has pearls.
  • They are called the Cumberland Monkeyface PearlyMussel because their shell looks like a “monkey's” face.
  • Their species are decreasing because of dam construction, water pollution and habitat loss due to humans and natural reasons.
  • They help purify river water because they have gills that filter water and tiny particles of food.
  • They are found in the Cumberland river.
  • They can live up to 20–35 years!
  • They are slow to reproduce so that makes it harder for them to recover from habitat loss and humans.
  • The Cumberland Monkeyface PearlyMussel also grows very slowly making their species hard to recover.
  • They take months or years to turn into an adult, when they are an adult a lady Cumberland Monkeyface PearlyMussel releases her eggs into the water, the
  • male Cumberland Monkeyface PearlyMussel will fertilise them with sperm.
  • After the eggs are fertilised they attach to a fish or a water host until they hatch, when they hatch they will leave the host fish and go to the bottom of the river bed.
  • The scientific name of this mussel is Theloderma intermedia
  • They can be found on the bottom of certain riverbeds.

References

  1. Cummings, K.; Cordeiro, J. (2012). "Theliderma intermedia". IUCN Red List of Threatened Species. 2012: e.T19041A183371195. doi:10.2305/IUCN.UK.2012-1.RLTS.T19041A183371195.en. Retrieved 15 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. "Theliderma intermedia (Conrad, 1836)". Integrated Taxonomic Information System. Retrieved 25 December 2023.
  4. ^ U.S. Fish and Wildlife Service Southeast Region, Asheville Ecological Services Field Office (July 2011). Cumberland Monkeyface (Quadrula intermedia) 5-Year Review: Summary and Evaluation (PDF) (Report). Asheville, North Carolina: U.S. Fish and Wildlife Service. Retrieved 25 December 2023.
  5. "Cumberland monkeyface (pearlymussel) (Theliderma intermedia)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 25 December 2023.
  6. 41 FR 24062
  7. Castronova, Frank V.; Sessine, Suzanne; Beacham, Walton, eds. (2001). "Cumberland Monkeyface". Beacham's Guide to the Endangered Species of North America. Gale Group. ISBN 0787650358. Retrieved 25 December 2023 – via encyclopedia.com.
  8. NatureServe (1 December 2023). "Quadrula intermedia". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 25 December 2023.
Taxon identifiers
Quadrula intermedia


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