In-hive Pesticide Exposome: Assessing risks to migratory honey bees from in-hive pesticide contamination in the Eastern United States

This study evaluated pesticide exposure and risk to honey bees in different crop systems along the eastern seaboard. The researchers identified a total of 93 pesticide residues in their samples (13 in bees, 61 in beebread, and 70 in wax). Notably the researchers found that mortality increased with the total number of products found in honey bee wax, indicating that repeated and compounding effects from several chemicals throughout the season may be significant.

This study also found that fungicides with certain modes of action (B.Cyto-Cytoskeleton and motor proteins; C.Resp–Respiration, G.Sterol-Sterol biosynthesis in membranes, M.Multi-Multi-site contact activity) were significantly elevated in colonies that died during the summer season.

Traynor, K.S., J.S. Pettis, D.R. Tarpy, C.A. Mullin, J.L. Frazier, M. Frazier, and D. vanEngelsdorp
Scientific Reports
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