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General and species-specific impacts of a neonicotinoid insecticide on the ovary development and feeding of wild bumblebee queens [Proceedings of the Royal Society B - Biological Sciences]

Keywords : bumble bee queens, insect pollinator, insecticide toxicity, neonicotinoid insecticide, parasites, sublethal effects

par Frédéric Magné - publié le

Bumblebees are essential pollinators of crops and wild plants, but are in decline across the globe. Neonicotinoid pesticides have been implicated as a potential driver of these declines, but most of our evidence base comes from studies of a single species. There is an urgent need to understand whether such results can be generalized across a range of species. Here, we present results of a laboratory experiment testing the impacts of field-relevant doses (1.87–5.32 ppb) of the neonicotinoid thiamethoxam on spring-caught wild queens of four bumblebee species : Bombus terrestris, B. lucorum, B. pratorum and B. pascuorum.(...)

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