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Related Experiment Videos

Honey bee orientation: a backup system for cloudy days.

F C Dyer, J L Gould

    Science (New York, N.Y.)
    |November 27, 1981
    PubMed
    Summary
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    Honey bees use memory, not a magnetic compass or polarized light, to navigate on cloudy days. This research reveals the primary mechanism behind their remarkable navigational abilities when the sun is obscured.

    Area of Science:

    • Animal Behavior
    • Neuroethology
    • Sensory Ecology

    Background:

    • Honey bees (Apis mellifera) exhibit sophisticated navigation, even under challenging conditions like cloudy skies.
    • Their ability to locate food sources and perform accurate waggle dances suggests a robust navigational system.
    • Potential navigation mechanisms include magnetoreception, celestial cues (sun, polarized light), and landmark-based memory.

    Purpose of the Study:

    • To investigate the primary sensory modality enabling honey bee navigation on overcast days.
    • To differentiate between magnetic, celestial, and memory-based navigation hypotheses.
    • To elucidate the backup navigational system utilized by honey bees when direct solar cues are unavailable.

    Main Methods:

    • Experimental manipulation of navigational cues (magnetic fields, polarized light).

    Related Experiment Videos

  • Observation of bee orientation and foraging behavior under controlled cloudy conditions.
  • Comparison of bee performance across different experimental conditions to test navigation hypotheses.

    • Main Results:

    • Honey bee navigation accuracy was maintained on cloudy days, ruling out reliance on direct sunlight or polarized light.
    • Experiments demonstrated that the bees' performance was not dependent on magnetic field perception.
    • Navigational success correlated strongly with the bees' prior experience and memory of the environment.

    Conclusions:

    • The navigational backup system in honey bees relies predominantly on learned spatial memory and landmark recognition.
    • This memory-based system allows for accurate orientation and foraging even when primary celestial cues are obscured.
    • Understanding bee navigation provides insights into insect sensory processing and cognitive mapping.