Monday, December 10, 2001 - 8:00 AM
0241

The communal crop: Modulation of sucrose response thresholds of pre-foraging honey bees with incoming nectar quality

Tanya Pankiw, Texas A&M University, Department of Entomology, Texas A&M University, College Station, TX, Mindy Nelson, University of Miami, Biology, University of Miami, Coral Gables, FL, and Robert E Page, University of California, Department of Entomology, University of California, Davis, CA.

We examined whether the quality of resources returned by foraging honey bees may be communicated to non-foraging members of the colony. The quality (concentration) of incoming sucrose solutions modulated a neuro-sensory system in pre-foragers, the proboscis extension reflex (PER) response. In this experiment, six pairs of colonies in separate outdoor cages were given ad libitum access to sucrose solution feeders. A colony from each pair was switched from 20% to 50% sucrose concentrations while the other was maintained at 20% sucrose. The PER responses of young, pre-foraging bee were measured from both colonies of each pair and compared. Sucrose response thresholds were significantly lower in pre-foragers of colonies foraging on 20% sucrose compared to pre-foragers in colonies foraging on 50% sucrose. Although all colonies had honey stores, the concentration of sugar solution in pre-foraging bees' crops were significantly lower in bees from colonies foraging on 20% sucrose compared to colonies foraging on 50% sucrose.

Species 1: Hymenoptera Apidae Apis mellifera (honey bee)
Keywords: neuroethology

The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA