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Posted Mon Feb 4 2013: from Nature:
Terrestrial pesticide exposure of amphibians: An underestimated cause of global decline?
Amphibians, a class of animals in global decline, are present in agricultural landscapes characterized by agrochemical inputs. Effects of pesticides on terrestrial life stages of amphibians such as juvenile and adult frogs, toads and newts are little understood and a specific risk assessment for pesticide exposure, mandatory for other vertebrate groups, is currently not conducted. We studied the effects of seven pesticide products on juvenile European common frogs (Rana temporaria) in an agricultural overspray scenario. Mortality ranged from 100 percent after one hour to 40 percent after seven days at the recommended label rate of currently registered products. The demonstrated toxicity is alarming and a large-scale negative effect of terrestrial pesticide exposure on amphibian populations seems likely. Terrestrial pesticide exposure might be underestimated as a driver of their decline calling for more attention in conservation efforts and the risk assessment procedures in place do not protect this vanishing animal group.
[Read more stories about: pesticide runoff, amphibian collapse, toxic water, unintended consequences, sixth extinction]

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'Doc Jim says:
Should we be blamed if amphibians are a little thin-skinned?

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