John Wiley & Sons, Ltd.

Polychlorinated biphenyls in adult black bass and yellow perch were not associated with their reproductive success in the upper Hudson River, New York

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Although production and use of polychlorinated biphenyls (PCBs) ceased nearly 35 years ago, questions still exist concerning the potential chronic effects these compounds may have on wild fish, including their reproductive success. In the upper Hudson River, New York, USA fish were exposed to PCBs primarily from two manufacturing plants located about 320 km upstream of New York City from the 1940s to 1977. We collected yellow perch (Perca flavescens), smallmouth bass (Micropterus dolomieu), and largemouth bass (M. salmoides) using electrofishing, measured PCBs in these adults, and estimated abundance and size of their offspring at age 1. Fish were collected annually from 2004 to 2009 from one control site upstream of the PCB discharge sites, and from two sites downstream from where PCBs were released. These sites (pools) are separated by a series of dams, locks, and canals. Muscle tissue wet‐weight PCB and lipid‐based PCB concentrations in adults in the two PCB exposure pools averaged approximately 1 ‐ 3 ug/g and 100 ‐ 500 ug/g, respectively. Age‐1 abundances were not related to adult PCB concentrations, but were inversely related to river flow. Size of age‐1 fish was slightly greater at the PCB‐exposure sites. Levels of PCBs in yellow perch, largemouth bass, and smallmouth bass in the upper Hudson River did not impair or reduce recruitment or reproductive success. Environ. Toxicol. Chem. © 2013 SETAC

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