Blame People for Intersex Fish
The U.S. Geological Survey says it’s getting closer to understanding why so many male smallmouth bass in the Potomoc River basin show female egg cells in their testes. The phenomenon is greatest in areas with the highest concentration of people and intensive agricultural development. Researchers are checking if hormones in wastewater and endocrine-disrupting chemicals in farm run-off are to blame.
Image courtesy of the U.S. Fish and Wildlife Service [...]
