Preliminary testing of Anostraca from Italy for use in freshwater fish culture |
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| Authors: | Graziella Mura |
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| Institution: | (1) Department of Fisheries and Wildlife Sciences, Virginia Polytechnic Institute and State University, 24061-0321 Blacksburg, VA, USA;(2) Present address: Missouri Department of Conservation, Fish and Wildlife Research Center, 1110 South College Avenue, 65201 Columbia, MO, USA |
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| Abstract: | Annual production of age-1 and age-2 crayfish of three populations in the New River, West Virginia, was quantified and then
compared to previously reported harvest of crayfish by a bait fishery. Sampling of crayfish within circular plots and age
and growth analyses aided estimation of crayfish production. Orconectes sanbornii sanbornii has a two-year life cycle, and Cambarus sciotensis and Orconectes virilis had three-year life cycles. Production by age-1 and age-2 crayfish (all species) was about 7.0 g live weight m−2 yr−1; almost half of this production was by C. sciotensis. Greater crayfish density and therefore production occurred in riffles than in pools. Annual crayfish harvest by anglers
and commercial catchers was equivalent to about 5% of annual crayfish production. |
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| Keywords: | production Cambarus sciotensis Orconectes sanbornii sanbornii Orconectes virilis crayfish warmwater stream New River West Virginia USA |
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