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Nature 408, 760 (14 December 2000) | doi:10.1038/35048736

Pesticides implicated in declining frog numbers

Jessa Netting

Drifting agricultural pesticides may be eroding once-healthy frog populations in the pristine mountain areas of California, US government scientists say. Researchers from the US Geological Survey (USGS) and the US Department of Agriculture have found that pesticides used by Californian farmers can disrupt an enzyme that regulates the nervous system of frogs in the Sierra Nevada mountains, downwind of farming regions.