Jun 24, 2010

Community and species-specific responses of wild bees to insect pest control programs applied to a pollinator-dependent crop

Journal of Economic Entomology
Julianna K Tuell, Rufus Isaacs

Abstract

Wild bee conservation is regarded as essential for sustainable production of pollinator-dependent crops, yet little is known about the effects on wild bee communities of typical insect pest management programs used postbloom. We developed an insecticide program risk (IPR) index to quantify the relative risk to wild bees of insecticide programs applied to blueberry fields. This was used to determine the relationship between IPR and the abundance, diversity, and richness of wild bee communities sampled during three successive flowering seasons. In 2 of 3 yr, bee abundance and species richness declined with increasing IPR. Bee diversity declined with IPR in one of 3 yr. These results indicate that wild bee communities are negatively affected by increasingly intensive chemical pest management activities in crop fields and that interyear variability in bee populations has the potential to mask such effects in short-term studies. When several wild bee species were analyzed separately, two of three solitary and one of three social blueberry-foraging species declined with increasing IPR values, suggesting that different life histories and nesting habits may help some bee populations escape the negative effects of insecticides applied a...Continue Reading

  • References19
  • Citations9

References

  • References19
  • Citations9

Citations

Mentioned in this Paper

Apis mellifera
Study
Crops, Agricultural
SPP2 dioxygenase
Lasioglossum imitatum
Apis mellifera preparation
Avian Crop
Andrena vicina
LUC7L3 gene
BLM Gene Analysis

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