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Fish exposed to estrogen produce fewer males
October 22, 2020
UC assistant professor Latonya Jackson conducted experiments with North American freshwater fish called least killifish. She found that populations of killifish exposed to estrogen in concentrations of 5 nanograms per liter in controlled lab conditions had fewer males and produced fewer offspring. Scientists have found estrogen at as much as 16 times that concentration in streams adjacent to sewage treatment plants.