Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 8, Pages 2566-2571Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2010.05.020
Keywords
Bioaccumulation; Moxostoma macrolepidotum; St. Clair River; Ethinylestradiol; Steroids; Estrogens
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada
- King Abdulaziz University, Jeddah, Saudi Arabia
- Great Lakes Action Plan
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17 alpha-ethynylestradiol (EE2), a synthetic estrogen prescribed as a contraceptive, was measured in Shorthead Redhorse Suckers (ShRHSs) (Moxostoma macrolepidotum) collected near a wastewater treatment plant (WWTP) in the St. Clair River (Ontario, Canada). We detected EE2 in 50% of the fish samples caught near the WWTP (Stag Island), which averaged 1.6 +/- 0.6 ng/g (wet weight) in males and 1.43 +/- 0.96 ng/g in females. No EE2 was detected in the samples from the reference site (Port Lambton) which was 26 km further downstream of the Stag Island site. Only males from Stag Island had VTG induction, suggesting the Corunna WWTP effluent as a likely source of environmental estrogen. EE2 concentrations were correlated with total body lipid content (R-2 = 0.512, p < 0.01, n = 10). Lipid normalized EE2 concentrations were correlated with delta N-15 (R-2 = 0.436, p < 0.05, n = 10), suggesting higher EE2 exposures in carnivores. Our data support the hypothesis of EE2 bioaccumulation in wild fish. (C) 2010 Elsevier Ltd. All rights reserved.
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