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Weed killer 'castrates' male frogs, study says

(CNN) -- Atrazine, a weed killer widely used in the Midwestern United States and other agricultural areas of the world, can chemically "castrate" male frogs and turn some into females, according to a new study.

New research suggests the herbicide may be a cause of amphibian declines around the globe, said biologists at the University of California-Berkeley, who conducted the study. The findings are being published this week in the journal Proceedings of the National Academy of Sciences.

Researchers found that long-term exposure to low levels of atrazine -- 2.5 parts per billion of water -- emasculated three-quarters of laboratory frogs and turned one in 10 into females. Scientists believe the pesticide interferes with endocrine hormones, such as estrogen and testosterone.

"The effects of atrazine in the long term have been shown to demasculinize or chemically castrate [frogs], c


Added: Mar-3-2010 
By: boomersooner
LiveLeaks, Arts and Entertainment
Tags: Weed Killer, Pesticides, Atrazine
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