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Science 6 December 2002:
Vol. 298. no. 5600, pp. 2010 - 2012
DOI: 10.1126/science.1076008
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Reports

Resetting the Circadian Clock by Social Experience in Drosophila melanogaster

Joel D. Levine,1 Pablo Funes,12 Harold B. Dowse,3 Jeffrey C. Hall1*

Circadian clocks are influenced by social interactions in a variety of species, but little is known about the sensory mechanisms underlying these effects. We investigated whether social cues could reset circadian rhythms in Drosophila melanogaster by addressing two questions: Is there a social influence on circadian timing? If so, then how is that influence communicated? The experiments show that in a social context Drosophila transmit and receive cues that influence circadian time and that these cues are likely olfactory.

1 Department of Biology, Brandeis University, Waltham, MA 02454, USA.
2 Icosystem Corporation, 10 Fawcett Street, Cambridge, MA, 02138, USA.
3 Department of Biological Sciences and Department of Mathematics and Statistics, University of Maine, Orono, ME 04469, USA.
*   To whom correspondence should be addressed. E-mail: hall{at}brandeis.edu

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