Monday, August 30, 2004

The Fish Are Losing Their Affect

I know it is bad blogging ettiquette to quote a whole article from a news source, but I cannot for the life of me find this on the Washington Post website at the moment, so here you go. Fish on Antideps.


    Drugs Found in Fish Samples
    Science Notes
    Washington Post
    August 30, 2004

    Antidepressants, birth control drugs and other medications are surfacing in fish tissue and are in some cases causing neurological, biochemical and physiological changes, according to Baylor University researchers.

    Bryan Brooks, assistant professor of environmental studies at Baylor University's Center for Reservoir and Aquatic Systems Research, said his findings mark the first time researchers have documented drugs building up in organisms that reside in streams that receive large amounts of wastewater from municipal sources.

    Brooks focused on effluent-dominated streams and rivers in Texas, where he and his researchers performed forensic tests on fish and invertebrates. In Waco alone, he said in a statement, about 12 million gallons of treated water a day are pumped into the Brazos River, which pours into the Gulf of Mexico.

    "When male fish are exposed to critical levels of estrogen, they can be feminized and their secondary sexual characteristics become suppressed," he said. "We're also seeing antidepressants building up in fish tissue at high enough levels that may trigger behavioral changes" in the fish.

    But he cautioned that more study is needed to determine whether the fish are suffering adverse consequences.

    A buildup of antidepressants can modulate neurotransmitters such as serotonin, dopamine and norepinephrine in fish, Brooks said.

    No Environmental Protection Agency regulations govern the level of pharmaceuticals in discharged water.