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生态学杂志 ›› 1998, Vol. ›› Issue (6): 40-43.

• 研究报告 • 上一篇    下一篇

啮齿类动物的昼夜节律器及光周期对其影响机制

蔡理全, 李庆芬   

  1. 北京师范大学生物系, 100875
  • 收稿日期:1996-08-15 修回日期:1996-10-17 出版日期:1998-12-10

Circadian Generator of Rodents and its Photoperiod Regulation

Cai Liquan, Li Qingfen   

  1. Department of Biology, Beijing Normal University 100875
  • Received:1996-08-15 Revised:1996-10-17 Online:1998-12-10

关键词: 糙隐子草, 恢复演替, 点格局, 完全空间随机模型, 泊松聚块模型, 嵌套双聚块模型

Abstract: Circadian rhythm is a general phenomenon in rodents, and it is a evolutionary result from animals' environmental adaptation.The SCN(suprachiasmatic neucleus)is believed to be an oscillator in mammals. It has the ability of both generating endogenerous periodicity and synchronising the environmental factors. Gene experession of some IEGs(Immeadiate early qenes)in the SCN, e.g. c-fos, jun-B, is effected by photoperiod. Their experssion product, Fos-Jun, can regulate some clock genes' expression. Thus, photoperiod can influent on circadian rhythm by speficially regulating genes' expression.

Key words: Cleistogenes squarrosa, restorative succession, point pattern, complete spatial randomness model, Poisson cluster process, nested double-cluster process.