Does perchlorate exposure alter thyroid and/or reproductive function in common carp in Lake Mead?
Snyder, E1, Crouch, N1, Kelly, K2, Van Der Kraak, G3, Fitzgerald, S4, Snyder, S5, 1 Pennsylvania Cooperative Fish and Wildlife Research Unit, Penn State University, University Park, PA, USA2 U.S. Bureau of Reclamation, Denver, CO, USA3 University of Guelph, Guelph, Ontario, Canada4 Michigan State University, East Lansing, MI, USA5 Southern Nevada Water Authority, Henderson, NV, USA ABSTRACT- Previous studies (Bevans 1996) have indicated that reproductive endocrine function was disrupted in common carp (Cyprinus carpio) captured from the Las Vegas Bay (LV Bay) of Lake Mead, Nevada-Arizona. To determine whether thyroid and/or reproductive function currently are altered in carp in LV Bay and whether observed effects could be attributed to perchlorate occurring in LV Bay, adult male and female carp were collected in March and October 2001 from LV Bay and from reference sites in Lake Mead. Endpoints examined include plasma thyroid hormone (TH) concentrations (triiodothyronine or T3 and thyr
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