Study suggests fipronil caused massive honeybee die-off in France

phys.org | 12/4/2018 | Staff
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A team of researchers from the University of Exeter and Fera Science Ltd, both in the U.K. has found evidence that implicates the insecticide fipronil as the culprit behind a massive die-off of honeybees in France in the 1990s. In their paper published in Proceedings of the National Academy of Sciences, the group describes their study of two insecticides that were thought to be behind the die-offs and what they found.

France experienced a serious die-off of honeybees over the years 1994 to 1998. The die-off, which was tied to colony collapse, began shortly after farmers began using two insecticides: imidacloprid and fipronil. Many farmers and some environmentalists blamed imidacloprid, but it was never proven to be the cause. Farmers stopped using both of the products and the die-offs stopped. In this new effort, the researchers have reviewed the die-off and report evidence that fipronil, not imidacloprid, actually caused the honeybee colony collapse and the subsequent die-off.

Researchers - Mortality - Rate - Tests - Insecticides

To learn more about what actually happened, the researchers conducted mortality rate tests of the insecticides on honeybees in their lab and then set up simulations designed to show how the insecticides impacted...
(Excerpt) Read more at: phys.org
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