# Pegias fabula

Pegias fabula és una espècie de musclo d'aigua dolça pertanyent a la família Unionidae. Com a adult, pot arribar a 38 mm de llargària total. La closca és de color groc fosc o verd clar amb ratlles fosques. Els individus joves tenen unes poques ratlles fosques al llarg de la base de la closca. Presenta dimorfisme sexual. La reproducció té lloc al setembre i l'octubre. Es troba al fons dels rierols, parcialment colgat entre sorra, grava i còdols dispersos.
És un endemisme dels Estats Units: Alabama, Kentucky, Carolina del Nord, Tennessee i Virgínia, incloent-hi el sud dels Apalatxes.
Les seues principals amenaces són la contaminació de l'aigua, les extraccions mineres (sobretot, de carbó, petroli i gas natural), la construcció de carreteres, l'alteració dels rierols, les tales dels boscos, les activitats agrícoles, els embassaments, els canvis d'ús del sòl i els plaguicides.

## Referències

* ↑ uBio (anglès)
* 1 2 Encyclopedia of Life (anglès)
* ↑ Catalogue of Life (anglès)
* 1 2 NatureServe (anglès)
* ↑ www.ncnhp.org Arxivat 2010-04-16 a Wayback Machine. (anglès)
* 1 2 North Carolina Wildlife Resources Commission (anglès)
* ↑ Bogan, A.E. i P.W. Parmalee, 1983. Tennessee's rare wildlife. Vol. 2: The mollusks. Tennessee Wildlife Resources Agency and the Tennessee Conservation Department: Nashville, Tennessee. 123 pp.
* ↑ Stansbery, D.H., 1976. Naiad mollusks. Pàgines 42-52 a H. Boschung (ed.). Endangered and threatened plants and animals of Alabama. Bulletin of the Alabama Museum of Natural History, 2: 1-92.
* ↑ IUCN (anglès)
* ↑ Mirarchi, R. E., J. T. Garner, M. F. Mettee i P.E. O'Neil, 2004. Alabama wildlife. Volum 2. Imperiled aquatic mollusks and fishes. University of Alabama Press, Tuscaloosa, Alabama. xii + 255 pp.
* ↑ The Scientific Council on Freshwater and Terrestrial Mollusks (W.F. Adams, J.M. Alderman, R.G. Biggins, A.G. Gerberich, E.P. Kefverl, H.J. Porter i S.S. van Davender eds.), 1990. A report on the conservation status of North Carolina's freshwater and terrestrial molluscan fauna.
* ↑ Williams, J.D., A.E. Bogan i J.T. Garner, 2008. Freshwater Mussels of Alabama & the Mobile Basin in Georgia, Mississippi & Tennessee, University of Alabama Press: Tuscaloosa, Alabama. 908 pp.
* ↑ Bogan, A.E., 2002. Workbook and key to the freshwater bivalves of North Carolina. North Carolina Museum of Natural Sciences: Raleigh, Carolina del Nord, 101 pp.
* ↑ Cicerello, R.R. i G.A. Schuster, 2003. A guide to the freshwater mussels of Kentucky. Kentucky State Nature Preserves Commission Scientific and Technical Series, 7: 1-62.
* ↑ Jones, J.W., R.J. Neves, M.A. Patterson, C.R. Good i A. DiVittorio, 2001. A status survey of freshwater mussel populations in the upper Clinch River, Tazewell County, Virginia. Banisteria, 17: 20-30. Arxivat 2010-06-06 a Wayback Machine.
* ↑ Jones, J.W. i R.J. Neves, 2007. Freshwater mussel status: Upper North Fork Holston River, Virginia. Northeastern Naturalist, 14(3): 471-480.
* ↑ LeGrand, H.E., Jr., S.P. Hall, S.E. McRae i J.T. Finnegan, 2006. Natural Heritage Program List of the Rare Animal Species of North Carolina. North Carolina Natural Heritage Program, Raleigh, Carolina del Nord, 104 pp.
* ↑ Encyclopedia of Alabama - Endangered Animal Species of Alabama Arxivat 2010-06-21 a Wayback Machine. (anglès)
* ↑ Threatened and Endangered Species in the Southeastern States Arxivat 2010-07-02 a Wayback Machine. (anglès)
* ↑ Virginia Endangered Species List (anglès)
* ↑ Parmalee, P.W. i A.E. Bogan, 1998, The Freshwater Mussels of Tennessee. University of Tennessee Press: Knoxville, Tennessee. 328 pp.
* ↑ Strayer, D., 1983, The effects of surface geology and stream size on freshwater mussel (Bivalvia, Unionidae) distribution in southeastern Michigan, U.S.A. Freshwater Biology, 13: 253-264.
* ↑ Layzer, J.B. i R.M. Anderson, 1992. Impacts of the coal industry on rare and endangered aquatic organisms of the upper Cumberland River Basin. Final Report to Kentucky Department of Fish & Wildlife Resources, Frankfurt, Kentucky and Tennessee Wild Resources Agency, Nashville, Tennessee. 118 pp.

## Bibliografia

* Ahlstedt, S.A., 1986. A status survey of the little-wing pearly mussel Pegias fabula (Lea, 1838). Report submitted to the U.S. Fish and Wildlife Service, contract 14-16-0004-84-927, Asheville, Carolina del Nord, 38 pp.
* Athearn, H.D., 1992. New records for some species of Alasmidontini. Malacology Data Net, 3(1-4): 90-91.
* Baillie, J. i Groombridge, B., 1996. Llista Vermella d'Espècies Amenaçades de la UICN 1996. UICN, Gland (Suïssa)
* Gordon, M.E. i J.B. Layzer, 1989. Mussels (Bivalvia: Unionoidea) of the Cumberland River review of life histories and ecological relationships. U.S. Fish and Wildlife Service Biological Report, 89(15): 1-99.
* Groombridge, B. (ed.), 1994. 1994 IUCN Red List of Threatened Animals. UICN, Gland (Suïssa)
* Howard, A.D., 1915. Some exceptional cases of breeding among the Unionidae. The Nautilus, 29: 4-11.
* UICN, 1990. Llista Vermella d'Animals Amenaçats de la UICN 1990. UICN, Gland, Suïssa i Cambridge, la Gran Bretanya.
* Lefevre, G. i W.T. Curtis, 1912. Studies on the reproduction and artificial propogation of fresh-water mussels. Bulletin of the Bureau of Fisheries, 30: 102-201.
* Moyle, P. i J. Bacon, 1969. Distribution and abundance of molluscs in a fresh water environment. Journal of the Minnesota Academy of Science, 35(2/3): 82-85.
* Strayer, D.L. i J. Ralley, 1993. Microhabitat use by an assemblage of stream-dwelling unionaceans (Bivalvia) including two rare species of Alasmidonta. Journal of the North American Benthological Society, 12(3): 247-258.
* Strayer, D.L., 1999. Use of flow refuges by unionid mussels in rivers. Journal of the North American Benthological Society, 18(4): 468-476.
* Turgeon, D.D., J.F. Quinn, Jr., A.E. Bogan, E.V. Coan, F.G. Hochberg, W.G. Lyons, P.M. Mikkelsen, R.J. Neves, C.F.E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F.G. Thompson, M. Vecchione i J.D. Williams, 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. Segona edició. American Fisheries Society Special Publication 26, Bethesda, Maryland: 526 pp.
* U.S. Fish and Wildlife Service (USFWS), 1988, Determination of endangered species status for the little-wing pearly mussel. Federal Register, 53(219): 45861-45865.
* U.S. Fish and Wildlife Service (USFWS), 1989, Little-wing pearly mussel recovery plan. U.S. Fish and Wildlife Service: Atlanta, Geòrgia (Estats Units) 29 pp.
* Watters, G.T., 1992. Unionids, fishes, and the species-area curve. Journal of Biogeography, 19: 481-490.

## Enllaços externs

* U.S. Fish and Wildlife Service (anglès)
* Center for Invasive Species and Ecosystem Health (anglès)