Fusconaia cuneolus

Fusconaia cuneolus, the fine-rayed pigtoe pearly mussel or fine-rayed pigtoe, is a species of bivalve in the family Unionidae. It is native to Tennessee, Alabama, and Virginia in the United States, in each of which its population has declined severely. It is a federally listed endangered species of the United States.[4][5]: 24064 

Fusconaia cuneolus
CITES Appendix I (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Fusconaia
Species:
F. cuneolus
Binomial name
Fusconaia cuneolus
(Lea, 1840)
Synonyms[3]
  • Unio cuneolus Lea, 1840
  • Unio appressus Lea, 1871
  • Unio tuscumbiensis Lea, 1871
  • Unio flavidus Lea, 1872

Like other freshwater mussels, this species reproduces by releasing its larvae, or glochidia, into the water where they make their way into the bodies of fish. There they develop into juvenile mussels. Fish hosts for this mussel include fathead minnow (Pimephales promelas); river chub (Nocomis micropogon); stoneroller (Campostoma anomalum); telescope shiner (Notropis telescopus); Tennessee shiner (Notropis leuciodus); white shiner (Luxilus albeolus); whitetail shiner (Cyprinella galactura); and the mottled sculpin (Cottus bairdi).[6]

There is only one large population which is located in the Clinch River.[6]

This species appears to be most closely related to Fusconaia cor.[7]

References
  1. Cummings, K.; Cordeiro, J. (2012). "Fusconaia cuneolus". IUCN Red List of Threatened Species. 2012: e.T8773A3146130. doi:10.2305/IUCN.UK.2012-1.RLTS.T8773A3146130.en. Retrieved 16 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. "Fusconaia cuneolus (Lea, 1840)". Integrated Taxonomic Information System. Retrieved 22 April 2023.
  4. "Finerayed pigtoe (Fusconaia cuneolus)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 22 April 2023.
  5. 41 FR 24062
  6. NatureServe (7 April 2023). "Fusconaia cuneolus". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 22 April 2023.
  7. Campbell, David; Lydeard, Charles (2012). "Molecular Systematics of Fusconaia (Bivalvia: Unionidae: Ambleminae)". American Malacological Bulletin. 30 (1): 1–17. doi:10.4003/006.030.0101. S2CID 84552044.


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