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Distribution of the threatened snail darter (percina tanasi in the upper Tennessee River drainage.(Report)

Journal of the Tennessee Academy of Science

| July 01, 2008 | Ashton, Matthew J.; Layzer, James B. | COPYRIGHT 2008 Tennessee Academy of Science. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

ABSTRACT--Discovered in 1973, the snail darter (percina tanasi Etnier) was extirpated from Little Tennessee River upon completion of Tellico Dam in 1979. Originally listed as a federally endangerd species in 1975, the snail darter was transplanted to several other rivers. In 1983, the snail darter was relisted as threatened after individuals were collected in five streams. By 1993, additional individuals had been collected in nine tributaries of the Tennessee River in Alabama, Georgia, and Tennessee. From May to October 2005, we sampled these nine streams to determine the species's present distribution. In each stream, we sampled by backpack electrofishing using a standard ...

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