| Circadian foraging rhythms of bumblebees monitored by radio-frequency identification. | |
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MedLine Citation:
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PMID: 20679495 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Circadian clocks enable organisms to anticipate changes of environmental conditions. In social insects, the colony as a superorganism has a foraging rhythm aligned to the diurnal patterns of resource availability. Within this colony rhythm, the diurnal patterns of individuals are embedded, and various tasks within the colony are performed at different times by different individuals to best serve the colony as a whole. Recent studies have shown that social cues influence the traits of the circadian clock in social insects, but keeping track of the activity of individual workers is not an easy task. Here the authors use fully automatic radio-frequency identification (RFID) to analyze the circadian rhythms of bumblebee foragers (Bombus terrestris) in the normal social context of their nest. They monitored their foraging patterns under different light conditions in the laboratory, including light:dark cycles (LD) as well as constant darkness (DD) and constant light conditions (LL). Their results show that the majority of bumblebee foragers exhibit robust circadian rhythms in LD under laboratory conditions, while they show free-running rhythms both in DD and LL, with free-running periods being significantly shorter in LL conditions. The authors also found that bumblebee workers show an increased level of arrhythmic activity ("death dance") in the hours or days before their death. |
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Authors:
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Ralph Jürgen Stelzer; Ralf Stanewsky; Lars Chittka |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of biological rhythms Volume: 25 ISSN: 1552-4531 ISO Abbreviation: J. Biol. Rhythms Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8700115 Medline TA: J Biol Rhythms Country: United States |
Other Details:
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Languages: eng Pagination: 257-67 Citation Subset: IM |
Affiliation:
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Queen Mary University of London, School of Biological and Chemical Sciences, Mile End Road, London, UK. r.stelzer@qmul.ac.uk |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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