Pesticides and Honey Bees: State of the Science

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Honey Bees and Pesticides: State of the Science, a 22-page report on the factors behind colony collapse disorder (CCD) with a sustained focus on the particular role of pesticides. The report documents evidence that pesticides are a key factor in explaining honey bee declines, both directly and in tandem with two leading co-factors, pathogens and poor nutrition. These studies, in U.S. and in Europe, have shown that small amounts of neonicotinoids—both alone and in combination with other pesticides—can cause impaired communication, disorientation, decreased longevity, suppressed immunity and disruption of brood cycles in honeybees.