American Bee Journal
Pesticide exposure does not always result in a sudden, catastrophic death of a large portion of the adult honey bees (Apis mellifera) in a colony. Often, in areas of intensive agriculture with a variety of crops and multiple applications of many agricultural products, populations of foraging bees come in contact with small poison(s) repeatedly over a period of several months.
Cox, Robert L. and Wilson, William T., "The Behavior of Insecticide-Exposed Honey Bees" (1987). Co. Paper 152.
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