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Journal of Comparative Physiology B

, Volume 161, Issue 1, pp 61–67 | Cite as

Oxygen consumption and flight muscle activity during heating in workers and drones of Apis mellifera

  • Franz Goller
  • Harald E. Esch
Article

Summary

Instantaneous oxygen consumption, muscle potential frequency, thoracic and ambient temperature were simultaneously measured during heating in individual workers and drones of honey bees. Relationships between these parameters and effects of thoracic temperature on power input and temperature elevation were studied. Oxygen consumption increased above basal levels only when flight muscles became active. Increasing muscle potential frequencies correlated with elevated oxygen consumption and raised thoracic temperature. The difference between thoracic and ambient temperature and oxygen consumption were linearly related. Oxygen consumption per muscle potential (μl O2 · g −1 thorax · MP−1) was two-fold higher in drones than in workers. However, oxygen consumption for heating the thorax (μl O2 · g −1 thorax · (Tth-Ta) · °C−1) was nearly the same in workers and drones. Thoracic temperature affected the amount of oxygen consumed per muscle potential (R10=1.5). Achieved temperature elevation per 100 MP was more temperature sensitive in drones (R10=6–10) than in workers (R10=3.6). Q10 values for oxygen consumption were 3 in workers and 4.5–6 in drones. Muscle potential frequency decreased with a Q10=1.8 in workers and 2.7 in drones. Heating behaviour of workers and drones was different. Drones generated heat less continuously than workers, and showed greater interindividual variability in predilection to heat. However, the maximal difference between ambient and thoracic temperature observed was 22 °C in drones and 14 °C in workers, indicating greater potential for drones.

Key words

Instantaneous oxygen consumption Muscle potentials Heating Honey bee workers and drones 

Abbreviations

DL

dorsal-longitudinal muscle

DV

dorsoventral muscle

MP

muscle potential

Ta

ambient temperature

Tth

thoracic temperature

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Franz Goller
    • 1
  • Harald E. Esch
    • 1
  1. 1.Department of Biological SciencesUniversity of Notre DameNotre DameUSA

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