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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). 
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Tuesday, January 29 • 2:00pm - 2:20pm
(CANCELLED) (SYMPOSIA-11) Effects of Temperature and Exposure Duration on Four Potential Rapid-Response Tools for Zebra Mussel (Dreissena polymorpha) Eradication

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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.

Tuesday January 29, 2019 2:00pm - 2:20pm EST

Attendees (2)