Bumblebee foraging rhythms under the midnight sun measured with radiofrequency identification |
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Authors: | Ralph J Stelzer Lars Chittka |
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Institution: | (1) School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK |
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Abstract: | Background In the permanent daylight conditions north of the Arctic circle, there is a unique opportunity for bumblebee foragers to maximise
intake, and therefore colony growth, by remaining active during the entire available 24-h period. We tested the foraging rhythms
of bumblebee (Bombus terrestris and B. pascuorum) colonies in northern Finland during the summer, when the sun stays above the horizon for weeks. We used fully automatic
radio-frequency identification to monitor the foraging activity of more than 1,000 workers and analysed their circadian foraging
rhythms. |
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Keywords: | |
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