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Journal of Comparative Physiology A

, Volume 189, Issue 8, pp 599–607 | Cite as

The dynamics of sleep-like behaviour in honey bees

  • S. Sauer
  • M. Kinkelin
  • E. Herrmann
  • W. Kaiser
Original Paper

Abstract

At night, honey bees pass through a physiological state that is similar to mammalian sleep. Like sleep in mammals, sleep-like behaviour in honey bees is an active process. This is expressed most clearly in these insects by spontaneous antennal movements which appear at irregular intervals throughout the night and interrupt episodes of antennal immobility. Here we present a newly developed video technique for the continuous recording of the position and movements of the bee's antennae. The same technique was used to record head inclination and ventilatory movements. Despite the constancy of the ambient temperature, the magnitudes of antennae-related parameters, as well as head inclination and ventilatory cycle duration, displayed dynamic unimodal time-courses which exhibited a high degree of temporal covariance. The similarity between these time-courses and the nightly time-course of the reaction threshold for a sensory stimulus, investigated previously, indicates that, in honey bees, deepest "sleep" and least ventilatory activity occur at the same time (in the 7th hour of the rest phase).

Keywords

Arthropods Dynamic process Honey bee Sleep-like behaviour Ventilation 

Abbreviations

DD

continuous darkness

EMG

electromyogram

LD

periodic alternation between light (L) and darkness (D)

MEST

Middle European Summer Time (UTC+2 h);

UV

ultraviolet

Notes

Acknowledgements

Our special thanks go to Prof. Dr.-Ing. Dr. hc. Willmut Zschunke and Heinz Helmuth Grimm (Department of Electrical Engineering and Information Technology, Darmstadt University of Technology) for the development and construction of the video interface. Theo Zaschka (München) produced the excellent, custom-built mechanical parts of the experimental apparatus. We thank Gabriele Bayer for her technical assistance and Jana Steiner-Kaiser for the translation of the manuscript and numerous helpful and critical discussions. We are grateful to the Deutsche Forschungsgemeinschaft for funding the experimental setup under the programme SFB 45 "Comparative Neurobiology of Behaviour".

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • S. Sauer
    • 1
    • 2
  • M. Kinkelin
    • 1
  • E. Herrmann
    • 3
  • W. Kaiser
    • 1
  1. 1.Institut für Zoologie der Technischen Universität DarmstadtDarmstadtGermany
  2. 2.Düsseldorfer Straße 20MünchenGermany
  3. 3.Fachbereich Mathematik der Technischen Universität DarmstadtDarmstadtGermany

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