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Nutrient pollution drives frog deformities by ramping up infections, says CU-Boulder study
Date:9/24/2007

opment, he said. A single infected snail can produce more than 1,000 cercariae in one night. Frogs that become deformed rarely survive long in the wild, he said.

"We were able to watch nutrient pollution move through the life cycle of the parasite as it cascaded through the food web," he said. "Since most human diseases involve multiple hosts, understanding how increased nutrient pollution affects freshwater and marine food webs to influence disease is an emerging frontier in ecological research."

A recent study of more than 6,000 species of amphibians worldwide concluded that 32 percent were threatened and 43 percent were declining in population. While the causes range from habitat loss to emerging disease, the researchers are now exploring how nutrient pollution and limb malformations contribute to the pattern, Johnson said.


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Contact: Pieter Johnson
Pieter.Johnson@colorado.edu
303-492-5623
University of Colorado at Boulder
Source:Eurekalert

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