10 Mar '12, 10am

#Herbicides May Be Lethal For Endangered #Butterfly Species, Study Says from @YaleE360

08 Mar 2012: Herbicides May Be Lethal For Endangered Butterfly Species, Study Says Common herbicides used to maintain the habitat of the endangered Lange’s metalmark butterfly may actually pose a lethal threat to the species , according to a new study. In tests requested by the U.S. Fish and Wildlife Service — which uses the herbicides to combat invasive plants inside a northern California wildlife refuge — scientists at Washington State University found that adult populations of the closely related Behr’s metalmark butterfly dropped by as much as one-third when their larvae were exposed to regular doses of three commonly used herbicides. For small populations, “any kind of reduction like that is going to be a problem,” said John Stark an ecotoxicologist and lead author of the study, published in the journal Environmental Pollution . The scientists could not use the Lange’...

Full article: http://e360.yale.edu/digest/herbicides_may_be_lethal__for...

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