Circadian Systems: Longevity as a Function of Circadian Resonance in <i>Drosophila melanogaster</i>
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- Colin S. Pittendrigh
- Department of Biological Sciences, Stanford University, Stanford, California 94305
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- Dorothea H. Minis
- Department of Biological Sciences, Stanford University, Stanford, California 94305
抄録
<jats:p> <jats:italic>Drosophila melanogaster</jats:italic> , which had been reared under standard conditions (25° and a 24-hr light/dark cycle involving 12 hr of light) were exposed, on the first day of adult life, to four environments (all at 25°) as follows: ( <jats:italic>i</jats:italic> ) a 24-hr day consisting of 12 hr light and 12 hr dark; ( <jats:italic>ii</jats:italic> ) a 21-hr day (10.5 hr light, 10.5 hr dark); ( <jats:italic>iii</jats:italic> ) a 27-hr day (13.5 hr light, 13.5 hr dark); and ( <jats:italic>iv</jats:italic> ) constant light. The experiment was repeated four times. In all four experiments the flies on a 24-hr day lived significantly longer than the flies in the other environments. This result, comparable to other observations on plants, indicates that eukaryotic systems as oscillators perform most effectively when they are driven close to their natural “circadian” frequency. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 69 (6), 1537-1539, 1972-06
Proceedings of the National Academy of Sciences
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詳細情報 詳細情報について
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- CRID
- 1363388845352267520
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- NII論文ID
- 30016259682
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- ISSN
- 10916490
- 00278424
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