Original Paper

Naturwissenschaften

, Volume 95, Issue 8, pp 723-729

First online:

Pheromonal regulation of starvation resistance in honey bee workers (Apis mellifera)

  • Patrick FischerAffiliated withDepartment of Entomology, W.M. Keck Center for Behavioral Biology, North Carolina State UniversityDepartment of Genetics, W.M. Keck Center for Behavioral Biology, North Carolina State University
  • , Christina M. GrozingerAffiliated withDepartment of Entomology, W.M. Keck Center for Behavioral Biology, North Carolina State UniversityDepartment of Genetics, W.M. Keck Center for Behavioral Biology, North Carolina State University Email author 

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Most animals can modulate nutrient storage pathways according to changing environmental conditions, but in honey bees nutrient storage is also modulated according to changing behavioral tasks within a colony. Specifically, bees involved in brood care (nurses) have higher lipid stores in their abdominal fat bodies than forager bees. Pheromone communication plays an important role in regulating honey bee behavior and physiology. In particular, queen mandibular pheromone (QMP) slows the transition from nursing to foraging. We tested the effects of QMP exposure on starvation resistance, lipid storage, and gene expression in the fat bodies of worker bees. We found that indeed QMP-treated bees survived much longer compared to control bees when starved and also had higher lipid levels. Expression of vitellogenin RNA, which encodes a yolk protein that is found at higher levels in nurses than foragers, was also higher in the fat bodies of QMP-treated bees. No differences were observed in expression of genes involved in insulin signaling pathways, which are associated with nutrient storage and metabolism in a variety of species; thus, other mechanisms may be involved in increasing the lipid stores. These studies demonstrate that pheromone exposure can modify nutrient storage pathways and fat body gene expression in honey bees and suggest that chemical communication and social interactions play an important role in altering metabolic pathways.

Keywords

Chemical communication Metabolism Starvation Insect