Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! Please note, this event has passed. To return to the main Conference website, go to: www.midwestfw.org.
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CONFERENCE SCHEDULE UPDATES & CHANGES: As a result of the prolonged government shutdown, we experienced a number of cancellations and changes to the schedule. Cancellations and changes are listed here (as of January 26, 2019).
AUTHORS: Todd Severson, James Luoma, Jeremy Wise, Matthew Barbour – US Geological Survey
ABSTRACT: Because zebra mussels (Dreissena polymorpha) continue to spread through inland lakes and rivers of North America somewhat undeterred, the need to develop tools to control their populations has become a major research effort. Developing data regarding the impacts of water temperature and exposure duration on the toxicity of chemical molluscicides to zebra mussels will assist resource managers to select a treatment regimen with the greatest potential for successful eradication. We evaluated the toxicity of two EPA-registered (EarthTec QZ and Zequanox) and two nonregistered (potassium chloride and niclosamide) zebra mussels toxicants over a range of water temperatures and exposure durations. We evaluated each toxicant in replicated laboratory studies conducted at 7, 12, 17, and 22°C using exposure durations ranging from 8 hours to 14 days. The minimum lethal concentration of toxicant(s) and the exposure duration required to achieve complete zebra mussel mortality at each test temperature will be presented.
