Is Chemical Control for Crayfish in Hatchery Fish Shipments Practical?
نویسندگان
چکیده
Invasive crayfish (family Cambaridae) displace native species and alter aquatic habitat, community structure, ecosystem function. We evaluated whether chemical control can be a reliable agent for to ensure that shipments from fish hatcheries did not result in new infestations of invasive crayfish. A series acute (≤1 h) toxicity tests were conducted evaluate the cypermethrin pyrethrin crayfish, freshwater mussels, fish; concentrations test organisms; effectiveness carbon-block filters remove waters; cost relative extra handling fish. Cypermethrin dosed at 75 μg/L 15 min resulted 100% mortality adult white river crawfish Procambarus acutus virile Faxonius virilis but cause >20% pondmussel Ligumia subrostrata, juvenile fatmucket Lampsilis siliquoidea, fingerling Bluegill Lepomis macrochirus, hybrid sunfish (Bluegill × Green Sunfish L. cyanellus), Striped Bass (White Morone chrysops M. saxatilis), yearling Paddlefish Polyodon spathula, or ready-to-eat Bluegill, sunfish, Channel Catfish Ictalurus punctatus. Behavioral effects, such as loss equilibrium head shaking, generally limited 1 h postexposure. Mean increased fillets (4–26 μg/g) whole (5–1,770 μg/g); therefore, regulations limiting harvest up 7 d following stocking may required. filtration system was effective reducing (<90%) thus potential effects nontarget receiving waters. Extra more cost-effective all tested except Paddlefish, where half handling. For other tested, 4–10 times expensive than Special use permits registration are needed before could routinely used hatcheries.
منابع مشابه
Fish and Crayfish Toxicology
1 Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zatisi 728/II, 389 25 Vodnany, Czech Republic 2 Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1/3, 6...
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ژورنال
عنوان ژورنال: North American Journal of Aquaculture
سال: 2023
ISSN: ['1548-8454', '1522-2055']
DOI: https://doi.org/10.1002/naaq.10291