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Environ Toxicol Chem

Title:		The herbicide atrazine induces hyperactivity and compromises tadpole detection of predator chemical cues
Author(s):		Ehrsam M; Knutie SA; Rohr JR;
Address:		"Department of Integrative Biology, University of South Florida, Tampa, Florida, USA"
Journal Title:		Environ Toxicol Chem
Year:		2016
Volume:		20160518
Issue:		9
Page Number:		2239 - 2244
DOI:		10.1002/etc.3377
ISSN/ISBN:		1552-8618 (Electronic) 0730-7268 (Linking)
Abstract:		"The ability to detect chemical cues is often critical for freshwater organisms to avoid predation and find food and mates. In particular, reduced activity and avoidance of chemical cues signaling predation risk are generally adaptive behaviors that reduce prey encounter rates with predators. The present study examined the effects of the common herbicide atrazine on the ability of Cuban tree frog (Osteopilus septentrionalis) tadpoles to detect and respond to chemical cues from larval dragonfly (Libellulidae sp.) predators. Tadpoles exposed to an estimated environmental concentration of atrazine (calculated using US Environmental Protection Agency software; measured concentration, 178 mug/L) were significantly hyperactive relative to those exposed to solvent control. In addition, control tadpoles significantly avoided predator chemical cues, but tadpoles exposed to atrazine did not. These results are consistent with previous studies that have demonstrated that ecologically relevant concentrations of atrazine can induce hyperactivity and impair the olfactory abilities of other freshwater vertebrates. The authors call for additional studies examining the role of chemical contaminants in disrupting chemical communication and the quantification of subsequent impacts on the fitness and population dynamics of wildlife. Environ Toxicol Chem 2016;35:2239-2244. (c) 2016 SETAC"
Keywords:		"Animals Anura Atrazine/*toxicity Avoidance Learning/*drug effects *Cues Fresh Water Herbicides/*toxicity Larva/*drug effects/physiology Odonata/physiology Predatory Behavior/drug effects Water Pollutants, Chemical/*toxicity Amphibian Behavior Infodisrupti;"
Notes:		"MedlineEhrsam, Mackenzie Knutie, Sarah A Rohr, Jason R eng R01 GM109499/GM/NIGMS NIH HHS/ R01 TW010286/TW/FIC NIH HHS/ 2016/01/23 Environ Toxicol Chem. 2016 Sep; 35(9):2239-44. doi: 10.1002/etc.3377. Epub 2016 May 18"