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Bullfrog Farming Spreads Deadly Fungus

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Populations of frogs and other amphibians have been declining around the world and biologist Lisa Schloegel believes that she may have discovered why.

Schloegel and her fellow researchers concluded that the breeding and farming of bullfrogs in Brazil, Taiwan and China, and the international sales of these live frogs may be spreading a fungus that causes a disease called chytridiomycosis, which is often deadly in amphibians.

Although bullfrogs are native to North America part of the natural ecosystem here, their sale, release and multiplication around the world is also creating an invasive species problem in other countries, as the large and aggressive bullfrogs gobble up smaller frogs and amphibians.

Tom Pelton, a national award-winning environmental journalist, has hosted "The Environment in Focus" since 2007. He also works as director of communications for the Environmental Integrity Project, a non-profit organization dedicated to holding polluters and governments accountable to protect public health. From 1997 until 2008, he was a journalist for The Baltimore Sun, where he was twice named one of the best environmental reporters in America by the Society of Environmental Journalists.