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Norte Carolina Mussel Atlas <br />http://www.nowildl*lfe.orgtpgD7VvrildlifeSpeciesCon/pg7blal-g.btm <br />speces Inrmon and, Status. <br />WILDLIFE SPECIES COUSEUATIOR. <br />brook floater Alasm donna .vadcosa (Lamarck, 1.819) <br />.Y <br />Please Note: Red text is defined in the Glossa! <br />DescripKiqq_ ~_ __ <br />Lamarck desddbad the 6'r"oo" k floater in 1819 frofn Go <br />the SchuylVill River in Pennsylvarula. This spaqies <br />has 8► fairly small, thin, rhomboidal shaped shell <br />that rarely exceeds 70 mm in lengih, 40* mm in <br />:height; and 36 mm in width. The -conspicuous posterior slope is broad <br />and flat to slightly concave, with- numerous short, law crrru�afibns <br />(Ihted6r) <br />radiating toward the posti�rlor margin at right angles to the growth <br />fi n,ca om n' <br />m The Pn_t,-frqntjM is yellowish *or brownish with -numerous dark <br />fte and grades into <br />green or black rays. The nacre is glossy; bltfi§h whi <br />a ptile orange in the'urrnbo area ' ; The hinge teeth are poorly <br />deVeloped. Each valve has one small thin, triangular pseudocardinal <br />tooth and lateral teeth are lacking or vestigial. This speicies has a <br />brig ht orange foot. Distribution (see ma <br />The brook -floater is found in Atlantic Slope river basins from the <br />(e)d6rior) <br />Savannah River Basin in South Carolina north to the Bt' Lawrence <br />vr <br />i * R 'Basin in" Canada. It has. also been found in the Gre6nbrier River <br />ver <br />(Ohio River Basin) of West Virginia. It is considered rnor6 common in <br />the northern part of its range. Distribution by county: Catawba River <br />Basin: Burke Co. (Linville River, Warrior Fork. and Johns River <br />su . bbasins); Pee Dee. River Basin: Surry Co. (Mitcheill, River <br />Subbasin), Randolph Co. (Caraway Cr. and Little River •subbasins), <br />Montgomery Co. (Little River' . end Barnes Cr. Subbasi ' ns); Cape Fear <br />River Bagirr..Moore Co. (Da6p River), Chatham Co. (ftcky Diver <br />Subbasin); Neuse River Basin: Onange Co. (Eno River Subbasin) <br />NOTE., All headwater areas that t7bw into these occupied habitats <br />should receive' ecial management. <br />SP <br />Habitat Pr6ference6 <br />This species inhabits medium size streams and rivers. It prefers <br />clean, swift Welters with stable gravel, or sand and gravel substrates. <br />However, indiw*du'als found near the mouth of the Linville River in North <br />Carolina were observed in sandy/silty substrate in cracks between <br />boulders along a steep bank, in I to 3 feet of' water and relatively <br />slow current. <br />Life History <br />The brook floater is a bradytictic breeder. Gravid females have been <br />found from August through May. Identified fish. hosts include <br />blacknose'dace, golden shiner; longnose dace, margined'madtom, <br />pumpkinseed, slimy sculpin and yellow perch (Shultz and Marbain <br />1998) <br />