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Environmental Toxicology and Chemistry, Vol. 27, No. 8, pp. 17801787, 2008 Printed in the USA
 

Summary: 1780
Environmental Toxicology and Chemistry, Vol. 27, No. 8, pp. 1780­1787, 2008
2008 SETAC
Printed in the USA
0730-7268/08 $12.00 .00
ACUTE, SUBLETHAL EXPOSURE TO A PYRETHROID INSECTICIDE ALTERS
BEHAVIOR, GROWTH, AND PREDATION RISK IN LARVAE OF THE FATHEAD
MINNOW (PIMEPHALES PROMELAS)
EMILY Y. FLOYD,* JUERGEN P. GEIST,§ and INGE WERNER
Department of Biology, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, USA
Graduate Group in Ecology, 2148 Wickson Hall, University of California, Davis, California 95616, USA
§Fish Biology Unit, Department of Animal Science, Technische Universita¨t Mu¨nchen, Mu¨hlenweg 22, D-85350 Freising, Germany
Aquatic Toxicology Program, School of Veterinary Medicine, Department of Anatomy, Physiology, and Cell Biology, 1 Shields Avenue,
University of California, Davis, California 95616, USA
(Received 13 August 2007; Accepted 25 February 2008)
Abstract--The present study determined the effects of environmentally relevant, short-term (4-h) exposure to the pyrethroid
insecticide esfenvalerate on mortality, food consumption, growth, swimming ability, and predation risk in larvae of the fathead
minnow (Pimephales promelas). Acute effect concentrations were determined, and in subsequent experiments, fish were exposed
to the following measured sublethal concentrations: 0.072, 0.455, and 1.142 g/L of esfenvalerate. To measure growth rates (%
dry wt/d), 8-d-old fathead minnows were exposed to esfenvalerate for 4 h, then transferred to control water and held for 7 d. Food

  

Source: Anderson, Todd - Department of Biology, San Diego State University

 

Collections: Biology and Medicine; Environmental Sciences and Ecology