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Sublethal Effects of Imidacloprid on Honey Bees & Colony Health Study

Learn about the study funded by NAPPC (Burt’s Bees) & USDA/ARS (Beltsville) assessing the impact of imidacloprid on honey bee colonies. Initial results show no significant differences in colony performance, foraging activities, and queen loss. Lab studies are ongoing to determine potential fitness impacts.

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Sublethal Effects of Imidacloprid on Honey Bees & Colony Health Study

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  1. Assessment of Sublethal Effects of Imidacloprid on Honey Bee Colony Health Funded by NAPPC (Burt’s Bees) and USDA/ARS (Beltsville) Galen Dively and Mike Embrey, Dept. of Entomology, UMD Jeff Pettis, USDA/ARS (Beltsville)

  2. Functional Hive Experiment

  3. Imidacloprid Residues Final Colony Status

  4. Summary of First Year Results • No differences in colony performance and bee strength. • No effects on foraging activities. • Some colonies experienced missing queens but not related to treatments. • Currently conducting lab studies to determine if imidacloprid-exposed bees are less fit. • Will repeat functional hive experiment and fitness studies in 2009

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