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Tuesday, January 30 • 3:40pm - 4:00pm
SYMPOSIA-11: From Simple to Complex: Behavioral Changes in Fish Exposed to Contaminants of Emerging Concern Singly and in Mixture

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AUTHORS. Utku Hasbay, Heiko L. Schoenfuss - Aquatic Toxicology Laboratory, St. Cloud State University

ABSTRACT. Contaminants of emerging concern (CEC), including pharmaceuticals, personal care products and industrial agents may impact aquatic life. Previous studies have documented reduced escape performance in fathead minnow larvae exposed to diverse CECs. However, these studies did not consider the complex mixtures of CEC present in the environment. The current study tested the hypothesis that CECs in mixture change fathead minnow behavior differently than the mixtures’ individual constituent. We assessed the potential of 20 commonly detected CECs to alter both juvenile (escape performance, feeding efficiency) and adult (nest defense, courtship, boldness) behaviors central to survival and reproduction after 96-hour flow-through exposures. In addition, we began the process of building increasingly complex mixtures of CEC using the same compounds. Compound concentrations and mixture composition were based on an analysis of nearly 500 water samples collected as part of the Great Lakes Restoration Initiative. Results to date suggest changes in survival, escape performance and feeding efficiency. The survival was significantly reduced (p

Tuesday January 30, 2018 3:40pm - 4:00pm CST