Fanshell: Difference between revisions

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m Task 19: convert/update IUCN references to {{cite iucn}} using data from IUCN Red List API; IUCN status confirmed; IUCN status ref updated; (2/00:06.20);
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| status_system = IUCN2.3
| status_system = IUCN2.3
| status_ref = <ref name="iucn status 17 November 2021">{{cite iucn |author=Bogan, A.E. |date=1996 |title=''Cyprogenia stegaria'' |volume=1996 |page=e.T6184A12566234 |doi=10.2305/IUCN.UK.1996.RLTS.T6184A12566234.en |access-date=17 November 2021}}</ref>
| status_ref = <ref name="iucn status 17 November 2021">{{cite iucn |author=Bogan, A.E. |date=1996 |title=''Cyprogenia stegaria'' |volume=1996 |page=e.T6184A12566234 |doi=10.2305/IUCN.UK.1996.RLTS.T6184A12566234.en |access-date=17 November 2021}}</ref>
|status2=LE
|status2_system=ESA
|status2_ref=<ref name=ecos>{{cite web|url=https://ecos.fws.gov/ecp/species/4822|title=Fanshell (''Cyprogenia stegaria'')|website=Environmental Conservation Online System|access-date=18 April 2023}}</ref><ref name=FR55>{{Federal Register|55|25591}}</ref>
| genus = Cyprogenia
| genus = Cyprogenia
| species = stegaria
| species = stegaria
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}}
}}


The '''fanshell''' (''Cyprogenia stegaria'') is a [[species]] of [[Aquatic animal|aquatic]] [[bivalve]] [[mollusk]] in the family [[Unionidae]]. This [[clam]] is native to the United States, where breeding populations remain in only three rivers. It is a federally listed [[endangered species]] of the United States.
The '''fanshell''' ('''''Cyprogenia stegaria''''') is a [[species]] of [[Aquatic animal|aquatic]] [[bivalve]] [[mollusk]] in the family [[Unionidae]]. This [[clam]] is native to the United States, where breeding populations remain in only three rivers. It is a federally listed [[endangered species]] of the United States.<ref name=ecos/><ref name=FR55/>


This clam is known to be reproducing in the [[Clinch River]] in [[Tennessee]] and [[Virginia]], and the [[Green River (Kentucky)|Green]] and [[Licking River (Kentucky)|Licking Rivers]] in [[Kentucky]]. There may be a small reproducing population in the [[Tennessee River]]. There also may be some small populations remaining in several states, but these are not reproducing.<ref name=jones>Jones, J. W. and R. J. Neves. (2002). [https://www.jstor.org/pss/1468301 Life history and propagation of the endangered fanshell pearlymussel, ''Cyprogenia stegaria'' Rafinesque (Bivalvia:Unionidae).] ''Journal of the North American Benthological Society'' 21(1) 76.</ref>
This clam is known to be reproducing in the [[Clinch River]] in [[Tennessee]] and [[Virginia]], and the [[Green River (Kentucky)|Green]] and [[Licking River (Kentucky)|Licking Rivers]] in [[Kentucky]]. There may be a small reproducing population in the [[Tennessee River]]. There also may be some small populations remaining in several states, but these are not reproducing.<ref name=jones>Jones, J. W. and R. J. Neves. (2002). Life history and propagation of the endangered fanshell pearlymussel, ''Cyprogenia stegaria'' Rafinesque (Bivalvia:Unionidae). ''Journal of the North American Benthological Society'' 21(1) 76–88. {{doi|10.2307/1468301}} {{JSTOR|1468301}}</ref>


This species is threatened by the loss and degradation of its habitat.<ref name=fws>USFWS. [http://ecos.fws.gov/docs/federal_register/fr1716.pdf Designation of the freshwater mussel, the fanshell as an endangered species.] ''Federal Register'' June 21, 1990.</ref>
This species is threatened by the loss and degradation of its habitat.<ref name=FR55/>


==Reproduction==
==Reproduction==

Revision as of 21:13, 18 April 2023

Fanshell
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Cyprogenia
Species:
C. stegaria
Binomial name
Cyprogenia stegaria
(Rafinesque, 1820)

The fanshell (Cyprogenia stegaria) is a species of aquatic bivalve mollusk in the family Unionidae. This clam is native to the United States, where breeding populations remain in only three rivers. It is a federally listed endangered species of the United States.[2][3]

This clam is known to be reproducing in the Clinch River in Tennessee and Virginia, and the Green and Licking Rivers in Kentucky. There may be a small reproducing population in the Tennessee River. There also may be some small populations remaining in several states, but these are not reproducing.[4]

This species is threatened by the loss and degradation of its habitat.[3]

Reproduction

All Unionidae are known to use the gills, fins, or skin of a host fish for nutrients during the larval glochidia stage. Cyprogenia stegaria release into the water a conglutinate mimicking an Oligochaeta worm which contains the mussel's young. When a fish bites into the conglutinate lure, the young glochida are released and latch onto the fish's gills for nutrients.[4]

References

  1. ^ Bogan, A.E. (1996). "Cyprogenia stegaria". IUCN Red List of Threatened Species. 1996: e.T6184A12566234. doi:10.2305/IUCN.UK.1996.RLTS.T6184A12566234.en. Retrieved 17 November 2021.
  2. ^ a b "Fanshell (Cyprogenia stegaria)". Environmental Conservation Online System. Retrieved 18 April 2023.
  3. ^ a b c 55 FR 25591
  4. ^ a b Jones, J. W. and R. J. Neves. (2002). Life history and propagation of the endangered fanshell pearlymussel, Cyprogenia stegaria Rafinesque (Bivalvia:Unionidae). Journal of the North American Benthological Society 21(1) 76–88. doi:10.2307/1468301 JSTOR 1468301