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Amphibians living close to farm fields are more resistant to common insecticides
Date:5/1/2013

eason for this cross-resistance is that chlorpyrifos kills in a way that is similar to many other insecticides. Thus, evolving higher resistance to one insecticide may provide higher resistance to others.

"This finding may buffer an amphibian population from suffering the consequences of exposures to new, but similar-acting chemicals," said Aaron Stoler, a coauthor of the second paper and a graduate student in Relyea's lab.

In the future, Relyea and his team plan to study the genetic mechanisms that underlie increased resistance in amphibians and determine whether increased resistance occurs in additional animal species that are not the targets of pesticides.

The article published today in Evolutionary Applications is titled "Proximity to agriculture is correlated with pesticide tolerance: Evidence for the evolution of amphibian resistance to modern pesticides." The article published Feb. 21 in Environmental Toxicology and Chemistry is titled "Cross-tolerance in amphibians: Wood frog mortality when exposed to three insecticides with a common mode of action."


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Contact: B. Rose Huber
rhuber@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2 3

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