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在人工条件下光周期对大麝鼬(Crocidura lasiura)活动节律的影响

吴化前, 祝龙彪   

  1. 华东师范大学生物系.上海
  • 出版日期:2006-07-27 发布日期:2007-07-20

THE INFLUENCE OF LIGHT CYCLE ON THE CIRCADIAN RHYTHM OF CROCIDURA LASIURA UNDER THE ARTIFICIAL CONDITION

WU Hunqian, ZHU Longbiao   

  • Online:2006-07-27 Published:2007-07-20

摘要: 大麝鼬是一种夜行性动物,其夜间(19:00—6;00)的播动频次占每天活动总频次的88:67 %,夜间活动呈双峰型曲线,前峰在19:00~24:O0,后峰在2:00—5:00 其夜行性指数为6:31, 但各季节不同:春季5.94, 夏季4.01,秋季6.56,冬季8.71,比其他翰髓科动物高。每日活动总频次雄性高于雌性,雄性的夜行性指数亦比雌性高。在人工倒置光周期的条件下,其最初几天的活动节律极度紊乱.至第7天后才稳定地回到自然光周期的日活动次数水平。

关键词: 犬麝鼬, 光周期, 活动节律

Abstract: Crocidura lasiura is nocturnal mamma1.Its activity frequency at night (19:O0—6:00)occupy 88.67 of total frequencies of day and night,and those of day (6 :00—19:00)only11.33%. The activity at whole nlght has two peaks,the flrst and second of peak is in 19:00-24:00and 2:00 -5:00 respectively.
It activity index at night is 6.31,but there is difference in each seasons,spring is 5.94,summer is 4.01,autumn is 6.56 and winter is 8,71, it is highere than other shrews. The daily activity frequency of male are higher than those of female.The activity index at night of male is also higher than those of female. When the Ii ght cycle rovers at the artificial condition, the circadian rhythm is most confusion in early days,the daiiy activity time stable come to light cycle of natural after the seventh day.

Key words: Crocidura lasiura, Circadian rhythm, Light cycle