Male bass in many rivers feminized
Government scientists figure that one out of five male black bass in American river basins have egg cells growing inside their sexual organs, a sign of how widespread fish feminizing has become.
Government scientists figure that one out of five male black bass in American river basins have egg cells growing inside their sexual organs, a sign of how widespread fish feminizing has become.
The findings come from the U.S. Geological Survey (USGS) in its first comprehensive examination of intersex fish in America, a problem linked to women's birth-control pills and other hormone treatments that seep into rivers.
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