Released: 2/7/2008 12:50:58 PM Contact Information: U.S. Department of the Interior, U.S. Geological Survey Office of Communication 119 National Center Reston, VA 20192 For several years, scientists have been working to determine why so many male smallmouth bass in the Potomac River basin have immature female egg cells in their testes – a form of […]
Category: Aquatic Life
More Evidence Links Endocrine Disrupting Pesticides to Frog Sex Changes
(Beyond Pesticides, March 9, 2007) New research shows that frogs are more sensitive to hormone-disturbing environmental pollutants than was previously thought. Male tadpoles that swim in water with environmentally relevant levels of such substances become females, according to the study that will be published in the scientific journal Environmental Toxicology and Chemistry (ET&C) in May […]
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Scientists explore connection between pollution, intersex fish.
A biological role reversal of fish in the Monocacy River and other local Maryland waterways has scientists wondering what problems might lie ahead for aquatic life — and humans. Frederick News-Post, Maryland. [related stories] http://www.fredericknewspost.com/sections/news/display.htm?StoryID=56738 Scientists explore connection between pollution, inter-sex fish Originally published February 11, 2007 By Nancy Hernandez News-Post Staff Frederick News Post, […]
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“Intersex” Fish Found in Potomac River, Endocrine Disruptors Suspected
(Beyond Pesticides, September 8, 2006) According to the Associated Press (AP), some species of male fish are acquiring female sexual characteristics at unusually high frequencies in the Potomac River and its tributaries, prompting concerns about pollutants that might be causing the problem. Environmentalists have long pointed to pesticides and other endocrine disrupting chemicals as having […]
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EPA Blames Popular Pesticide for Frog Abnormalities
On June 18, 2003, The New York Times reported that scientists from the Environmental Protection Agency (EPA) say there is “sufficient evidence” to conclude that the country’s most widely used pesticide, atrazine, causes sexual abnormality in frogs. They are recommending that the agency conduct more research to understand atrazine’s mechanisms and its broader impact […]
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