Journal of Photoscience
- 제9권2호
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- Pages.9-12
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- 2002
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- 1225-8555(pISSN)
Photoperiodic modulation of insect circadian rhythms
- Tomioka, Kenji (Department of Physics, Biology and Informatics, Faculty of Science and Research Institute for Time Studies, Yamaguchi University) ;
- Uwozumi, Kouzo (Department of Physics, Biology and Informatics, Faculty of Science and Research Institute for Time Studies, Yamaguchi University) ;
- Koga, Mika (Department of Physics, Biology and Informatics, Faculty of Science and Research Institute for Time Studies, Yamaguchi University)
- 발행 : 2002.08.01
초록
Circadian rhythms can be seen in a variety of physiological functions in insects. Light is a powerful zeitgeber not only synchronizing but also modulating the rhythm to adjust insect's temporal structure to seasonal changes in the environmental cycle. There are two general effects of the length of light phase within 24 hr light cycles on the circadian rhythms, i.e., the modulation of free-running period and the waveform. Since the photoperiodic modulation of the free-running period is induced even in the clock mutant flies, per