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Incidence and characterization of intersex, testicular tumors, and reproductive condition in common carp as indicators of water quality and fish health in Lake Mead National Recreation Area


May 2010 - September 2012


Earlier studies of Lake Mead National Recreation Area (LAME) provided information indicating that endocrine disruption is still occurring in fish from Las Vegas Wash and Bay. A more recent study indicated the occurrence of gonadal tumors in male common carp from Willow Beach. The goal of this proposed study is to characterize the incidence of testicular abnormalities male fish from LAME. Estimates will be determined on the extent as well as the spatial distribution of the problem. Additionally, relevant biomarkers of sperm quality will be provided, including markers of DNA damage. This information cannot be extracted from previous studies because they were not designed to address the relevant questions. Therefore, the objectives of this proposed study are to:

1. Determine the extent of gonadal anomalies in male common carp populations;
2. Determine the spatial distribution of these anomalies within LAME;
3. Determine associations between gonadal anomalies and sperm quality


Current Staff

Federal Staff: 102

Masters Students: 243

Phd Students: 163

Post Docs: 57

University Staff: 254

5 Year Summary

Students graduated: 699

Scientific Publications: 1910

Presentations: 4358



Funding Agencies

  • Nevada Water Science Center


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