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1 April 2004 Effects of Clothianidin on Bombus impatiens (Hymenoptera: Apidae) Colony Health and Foraging Ability
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Abstract

We conducted laboratory experiments to investigate the lethal and sublethal effects of clothianidin on bumble bee, Bombus impatiens Cresson, colony health and foraging ability. Bumble bee colonies were exposed to 6 ppb clothianidin, representing the highest residue levels found in field studies on pollen, and a higher dose of 36 ppb clothianidin in pollen. Clothianidin did not effect pollen consumption, newly emerged worker weights, amount of brood or the number of workers, males, and queens at either dose. The foraging ability of worker bees tested on an artificial array of complex flowers also did not differ among treatments. These results suggest that clothianidin residues found in seed-treated canola and possibly other crops will not adversely affect the health of bumble bee colonies or the foraging ability of workers.

Michelle T. Franklin, Mark L. Winston, and Lora A. Morandin "Effects of Clothianidin on Bombus impatiens (Hymenoptera: Apidae) Colony Health and Foraging Ability," Journal of Economic Entomology 97(2), 369-373, (1 April 2004). https://doi.org/10.1603/0022-0493-97.2.369
Received: 30 May 2003; Accepted: 1 December 2003; Published: 1 April 2004
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