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Obtaining Specimens with Slowed, Accelerated and Reversed Aging in the Honey Bee Model
10:58

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Published on: August 29, 2013

Bees get a head start on honey production.

Susan W Nicolson1, Hannelie Human

  • 1Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, Republic of South Africa. swnicolson@zoology.up.ac.za

Biology Letters
|March 28, 2008
PubMed
Summary

Honeybees actively concentrate nectar during foraging. This process, beginning in the field, involves regurgitation and evaporation, leading to a significant increase in sugar concentration before reaching the hive.

Area of Science:

  • Entomology
  • Plant-pollinator interactions
  • Animal physiology

Background:

  • Honeybees (Apis mellifera) are crucial pollinators.
  • Nectar is the primary carbohydrate source for honeybees.
  • Nectar concentration is generally assumed constant during honeybee transport.

Purpose of the Study:

  • To investigate nectar concentration changes during honeybee foraging.
  • To determine if honeybees concentrate nectar before hive arrival.
  • To understand the physiological mechanisms and implications of early nectar processing.

Main Methods:

  • Sampling of crop contents from nectar foragers on Aloe greatheadii var. davyana.
  • Measurement of nectar concentration (w/w) and volume.
  • Analysis of nectar concentration differences between bees on flowers and returning foragers.

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Main Results:

  • Dilute nectar (approx. 20% w/w) was collected from Aloe greatheadii.
  • Crop contents of bees on flowers were significantly more concentrated than initial nectar.
  • Returning foragers showed further increased concentration (38-40%) with decreased volume.

Conclusions:

  • Honeybees actively concentrate nectar during foraging through regurgitation and evaporation.
  • Early nectar processing begins in the field, facilitated by low ambient humidity.
  • This has significant implications for honeybee energetics, water balance, and communication.