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Tuesday, January 30 • 4:00pm - 4:20pm
SYMPOSIA-11: Environmentally Derived Urban Mixtures of Contaminants of Emerging Concern Alter Reproduction in Fathead Minnows over Three Generations

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AUTHORS. Lina C. Wang, Uktu Hasaby, Josh T. Robinson, Jessica L. Ward, Heiko L. Schoenfuss

ABSTRACT. Contaminants of emerging concern (CECs) are well documented in anthropogenically altered environments and adversely affect fish exposed in laboratory studies.  However, little is known about the effects of complex mixtures of CECs, representing common environmental conditions, on organisms exposed across their entire life cycle. Using an existing data matrix of over 500 water samples analyzed for over 200 CECs, we explored whether complex CEC mixtures adversely affect fish when exposed across multiple generations, whether these effects are dose-dependent and whether effects are modified beyond the F1 generation. Twenty replicate breeding pairs in each of the three mixture concentrations, ethanol carrier control (ETOH) or blank control were examined for a range of physiological, anatomical, behavioral and reproductive endpoints across their ontogeny. Low treatment F1 males were more dominant than EtOH, Medium, and High treatment F2 males (p=0.01, 0.006, 0.0007, Least Squares Model). F1 and F2 breeding pairs had significantly higher fecundity rates at the Low and Medium treatments than High and EtOH control treatments (p

Tuesday January 30, 2018 4:00pm - 4:20pm CST
102C