Washington, DC–(ENEWSPF)–January 4, 2016. A study published by the U.S. Geological Survey (USGS) and U.S. Fish and Wildlife Service (FWS) found large-scale evidence of intersex in smallmouth and largemouth bass in the Northeast United States, an indicator of endocrine disruption. The study, published in the journal Ecotoxicology and Environmental Safety, looks at 19 U.S. National Wildlife Refuges and is the first reconnaissance survey of this scope. The study found that the prevalence of testicular oocytes across all samples was 85% and 27% for male small- and largemouth bass, respectively.
