Abstract "Nonlethal exposure of honey bees to thiamethoxam (neonicotinoid systemic pesticide) causes high mortality due to homing failure at levels that could put a colony at risk of collapse. Simulated exposure events on free-ranging foragers labeled with a radio-frequency identification tag suggest that homing is impaired by thiamethoxam intoxication. These experiments offer new insights into the consequences of common neonicotinoid pesticides used worldwide.
Henry, M. et all. A Common Pesticide Decreases Foraging Success and Survival in Honey Bees. Science 20 April 2012: Vol. 336 no. 6079 pp. 348-350 DOI: 10.1126/science.1215039