Upper Midwest Environmental Sciences Center
Principal Investigator: Jon Amberg
The results from this study will provide baseline data that may lead to the development of a targeted delivery system that reduces non-target species mortality when treating waters to control invasive fish species. These types of technologies have the potential to be used by fishery management agencies to control invasive fish species throughout the United Sates.
Current toxicants used to control aquatic invasive species are non-selective and applied as immersion exposures – resulting in equal exposure of native and invasive species to the toxicant. Development of a targeted delivery system which reduces non-target species exposure to the toxicant could greatly enhance selectivity and reduce effects to non-target species. Development of such delivery methodologies will require full understanding of native and invasive species since a targeted delivery system will likely use an oral or gill adhesion delivery route.
This study was designed to determine the quantity of a piscicidal compound that must be delivered with new technologies engineered to preclude non-target mortality. Determining the minimum lethal dose will help determine the quantity of material that must be readily accepted by the target animals and the concentration of piscicide within the material. The goals of this project are to determine the toxicity of Pestanal and antimycin-A administered orally to Asian carps (Hypophthalmichthys spp.). Fish will be tube-fed a commercial diet that contains target doses of 0 (control), 0.35, 0.70, 1.00 and 2.00 ppm Pestanal or 0 (control), 0.75, 1.50, 3.00 and 6.00 ppm antimycin-A. Fish will be monitored for a 48-hr evaluation period. Because metabolism in fishes is generally considered to be temperature dependent, the study will be conducted at 20 ± 2°C.
Determine the toxicity of Pestanal and antimycin-A administered orally to Asian carps (Hypophthalmichthys spp.).
URL: http://www.umesc.usgs.gov/aquatic/aquatic_invasives1.html
