French Agriculture Minister Stephane Le Foll said on Friday that the country plans to ban the use of a neonicotinoid pesticide used as a seed coating for the oil crop rapeseed, over concerns of its sub-lethal effects on honey bees, Reuters reports.
The Le Foll said his agency had investigated results reported in Science (see C&EN’s coverage by Lisa Wilson) that suggested bee behavoir was altered when bees were exposed to neonicotinoids as they foraged for nectar. Results from that research and others reviewed by the French agency for food, environmental and occupational safety showed sub-lethal effects that caused bees to not return to the hive, a behavoir that could weaken bee colonies. The agency issued a release about its findings – in English – which you can read here.
As a result, France now plans to withdraw the permit for Syngenta’s Cruiser OSR pesticide, when used as a seed coating for rapeseed. Cruiser includes one type of neonicotinoid called thiamethoxam. The rapeseed flower produces nectar that is harvested by honey bees. It is one route of exposure that recent research has investigated.
As C&EN and the Cleantech Chemistry blog have reported, research on possible causes for widespread collapse of honey bees – both in the U.S. and Europe – is ongoing. Neonicotinoid pesticides have been a focus of some of the research, as have parasites, viruses, and various modern agricultural practices such as monocultures.
The move by France has brought responses from the EU, Syngenta, and the European Crop Protection Association. These groups acknowledge that research shows that bees are negatively affected by neonicotinoids but they say the manner of exposure and the likely amount of exposure is likely much lower than what has been tested. Meanwhile, France has asked the EU to add tests for sub-lethal impacts on bees to its protocol for approving the use of pesticides.
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