Skip to main content
U.S. flag

An official website of the United States government

Audio

Audio intro.
USGS CoreCast
USGS CoreCast Series
USGS CoreCast Series
Endocrine Disruptors and Intersex Fish in Minnesota Lakes
Endocrine Disruptors and Intersex Fish in Minnesota Lakes
USGS CoreCast
USGS CoreCast Series
USGS CoreCast Series
Endocrine Disruptors and Intersex Fish in Minnesota Lakes

Endocrine disrupting chemicals were identified in all of the 11 Minnesota lakes studied by the U.S. Geological Survey, St. Cloud State University and the Minnesota Pollution Control Agency. Female characteristics were observed in male fish in most of the lakes studied. USGS scientists Jeffrey Writer talks to us about what's going on. 

Endocrine disrupting chemicals were identified in all of the 11 Minnesota lakes studied by the U.S. Geological Survey, St. Cloud State University and the Minnesota Pollution Control Agency. Female characteristics were observed in male fish in most of the lakes studied. USGS scientists Jeffrey Writer talks to us about what's going on. 

Eastern American Toad
Eastern American Toad
Eastern American Toad
Eastern American Toad (Bufo americanus americanus)
Eastern American Toad (Bufo americanus americanus)
Eastern American Toad
Eastern American Toad
Eastern American Toad
Eastern American Toad (Bufo americanus americanus)

The sound of an Eastern American toad (Bufo americanus americanus) call.