The connection between frog deformities and pesticides and herbicides has been reported a lot. But here is a new study by Southern Illinois University in Carbondale that shows how little it really takes to harm amphibians. Imagine there was a pool of water in a farm pond that had the presence of only a trace (0.0000000003*) of pesticide ingredient edosulfan. That would be enough to kill half of the pond’s frog population. Take the 3 and make it 8, and every frog dies. Here’s the news release explaining the study: (*Double check my decimal conversion. What I’m attempting to show is 0.3 parts per billion.)

An excerpt from the release:

The foothill yellow-legged frog is especially susceptible to the chemicals such as endosulfans, which kill by essentially overloading the nervous system and rendering breathing muscles useless. Europe and Australia each have banned the use of the chemical as a pesticide, and the U.S. Environmental Protection Agency also is studying the issue, Sparling said.

Sparling is optimistic humans can find ways to both farm on a large enough scale to feed the population and protect non-pest animals.

“To produce crops to provide for the world we have to use pesticides, and I’m not anti-pesticide,” he said. “But it’s important for us as scientists, agriculturalists and environmental protectors to make sure we continue developing pesticides that are as protective as possible of non-target animals as can be, both in the chemicals we use and application methods.”

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