Author
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Mitchell, Andrew |
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Submitted to: Proceeding of World Aquaculture Society
Publication Type: Abstract Only Publication Acceptance Date: 1/27/2002 Publication Date: 1/27/2002 Citation: MITCHELL, A.J. PREFERENCE OF BLACK CARP FOR THREE AQUATIC SNAIL SPECIES.. PROCEEDING OF WORLD AQUACULTURE SOCIETY. 2002. p.220. Interpretive Summary: Technical Abstract: Aquatic snails are known to carry parasites that can infect fish. Three species of snails, Melanoides tuberculata, Planorbella trivolvis, and Physella heterostropha, harbor parasites that can cause serious infections in propagated fish species. Samples of each of the above snails were offered to black carp Mylopharngodon pisceus (20 25 cm in length), in two replicated trial in order to determine food preference and thereby the potential for using black carp as a tool in managing populations of each snail species. No snail used in the trials had a measurement greater than 1.8 cm. Individual black carp were placed into four 70-L aquaria (1 fish/aquaria) and acclimated for 24 h. Aquaria were connected to a closed recirculation fresh water culture system with biofiltration. Twenty individuals of each species of snail (60 total) were then placed into each aquaria with fish plus four control aquaria without fish and observed for 24 h. Snails remaining at the end of 1 h, 2 h, 3 h, 4 h, 6 h, 8 h, and 24 h post-stocking were counted. Results indicate a significant preference for P. trivolvis, and P. heterostropha over M. tuberculata (Table 1). There is no significant difference between the number of P. trivolvis, and P. heterostropha consumed by the carp. |
