Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/21609
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dc.contributor.authorMiller, Andrew C.-
dc.contributor.authorHartfield, Paul D.-
dc.date.accessioned2017-03-21T18:34:42Z-
dc.date.available2017-03-21T18:34:42Z-
dc.date.issued1987-04-
dc.identifier.urihttp://hdl.handle.net/11681/21609-
dc.description.abstractAbstract: Fourteen sites on Mill, Sevenmile, and Indian creeks in Davidson and Williamson Counties, Tenn., were surveyed for crayfish in July 1985. Orconectes shoupi, considered for listing as Endangered by the US Fish and Wildlife Service, numerically dominated at 8 of the 14 locations and comprised 78 percent of the crayfish community. The remaining 22 percent of the crayfish community consisted of two species, 0. minus and O. palacidus. At sites where quantitative collections were made, O. shoupi densities ranged from 0.6/sq m to 11.9/sq m. Orconectes shoupi was numerically dominant at the majority of sites in Mill Creek, whereas the other two species of Orconectes were most common in Sevenmile Creek, a major tributary of Mill Creek. When O. shoupi dominated the community, it had a greater proportion of larger sized individuals than when it was subdominant to the other two species of Orconectes. Length-frequency analysis for this species indicated an early cohort (17 to 25 mm), a late cohort (maximum size 15 mm), and a group larger than 25 mm, which probably had overwintered from the previous year. Orconectes shoupi is a nocturnal, aggressive crayfish that is densest at sites with sufficient cover consisting of slab rock for large individuals or cobble or gravel for juveniles. Results of this survey indicated that, although this species has been reported only from well-oxygenated, sediment-free water, it is tolerant of suspended and settled sediment and eutrophic conditions.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers. Nashville District.en_US
dc.language.isoenen_US
dc.publisherEnvironmental Laboratory (U.S.)en_US
dc.relation.ispartofseriesMiscellaneous Paper;EL-87-3-
dc.subjectCrayfish--Tennessee--Mill Creek Basinen_US
dc.subjectEndangered speciesen_US
dc.subjectMill Creek Basin (Tenn.)en_US
dc.titleA study of 'Orconectes Shoupi', Mill Creek Basin, Tennessee 1985en_US
dc.typeTechnical Reporten_US
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