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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 19, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Tuesday, January 29 • 2:20pm - 2:40pm
(SYMPOSIA-11) A Structural Activity Relationship (SAR) Approach to Identify New Chemical Controls for Invasive Aquatic Species

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AUTHORS: Joel G. Putnam, Diane Waller, Justine Nelson– US Geological Survey Upper Midwest Environmental Sciences Center; Tammy J. Clark, Viterbo University

ABSTRACT: The search for new chemical controls for aquatic invasive species (AIS) that are efficacious and selective is needed to expand the arsenal of AIS control tools for resource managers. Chemical control options for dreissenid mussels (Dreissena polymorpha and D. bugensis) currently rely heavily on molluscicides that can be costly and/or harmful to nontarget species. The Environmental Protection Agency ECOTOX Knowledgebase was used to gather toxicity data for over 400 taxa covering five kingdoms and 7700 chemicals. Our search used structural activity relationships (SARs) to correlate chemical information with biological activity and predict new chemicals that are effective against dreissenid mussels. A database of chemical descriptors, such as molecular weight, solubility, and polar surface area, was created and published to link the chemical structure/information with species-specific toxicity. Toxicity trials have been initiated using a category of chemicals with high selective toxicity towards dreissenid mussels. Chemicals that produced significant mortality of dreissenid mussels were also tested on nontarget native freshwater mussels to determine selectivity. The results of toxicity trial will be combined with chemical characteristics (e.g., solubility) to identify toxicants that may be suitable for incorporation into a microparticle that is ingested by dreissenid mussels.

Tuesday January 29, 2019 2:20pm - 2:40pm
CENTER STREET ROOM A