Population decline in a ground-nesting solitary squash bee (Eucera pruinosa) following exposure to a neonicotinoid insecticide treated crop (Cucurbita pepo).

Although approximately 70% of solitary bee species nest in the ground 20 , 44 where they spend most of their lives 19 , 44 , and many of these are associated with agriculture 1 , 8 , 12 , 20 , 45 , 46 , no studies have yet evaluated potential impacts of pesticide exposure on this highly significant group of insect pollinators.

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