Previous Articles     Next Articles

Activity rhythms of captive white-headed langur in spring

PENG Yanyan,CHEN Min,WANG Aishan,YAO Jianzhuang,ZHANG Endi   

  1. College of Life Sciences,East China Normal University,Shanghai 200062,China
  • Online:2010-03-02 Published:2010-03-02

圈养白头叶猴春季昼夜活动节律

彭燕燕, 陈珉, 王爱善, 姚建庄, 张恩迪   

  1. 华东师范大学生命科学学院, 上海 200062

Abstract: Five captive white-headed langurs (Trachypithecus leucocephalus) were observed day and night from March to
May, 2008 in Shanghai Zoological Park using an instantaneous scan sampling method. Results showed that the langurs activity began at around 06∶ 00 and ended at 18∶00 or 18∶ 30 in spring. During the daytime, resting, feeding and moving were the main behaviors of the langurs. The mean frequencies were 13.79, 4.75 and 2.18, respectively. During the nighttime, the main behaviors were resting,moving and scratching The mean frequencies were 22.13, 0.43 and 0.26, respectively. Activity rhythm of moving,grooming,playing and other behaviors differed significantly among the individuals. No grooming and playing behaviors happened at night. The langurs had four small movement peaks at 21∶ 00,00∶30, 03∶ 00 and 04∶ 30, and also had scratching peaks at 22∶30, 01∶ 00, 02∶ 03∶30, 04∶ 30 and 05∶ 30 from which we inferred that the langurs remained awake and alert during the long night. Moving behavior differed significantly between male and female langurs during the day and night.

Key words: Activity frequency, Daily activity rhythm, White-headed langur(Trachypithecus leucocephalus)

摘要: 2008 年3 ~5 月,采用瞬时扫描法,对上海动物园5 只白头叶猴的行为进行24 h 昼夜连续观察。结果表明:春季圈养白头叶猴一天的活动起于06∶ 00 左右,结束于18∶ 00 或18∶ 30。白天白头叶猴的主要行为为休息、取食和移动,平均频次依次是13.79 次、4.75 次和2.18 次。夜间的主要行为为休息、移动和抓挠,平均频次依次是22.13 次、0.43 次和0.26 次。不同个体昼夜活动节律差异很大。其中,移动、理毛、玩耍和其它行为的差异显著。夜间无理毛和玩耍行为,移动行为在夜间21∶ 00, 00 ∶ 30, 03∶00 和04∶ 30 出现高峰。在22∶ 30, 01∶ 00, 02∶ 00, 03∶ 30, 04∶ 30 和05∶30 则出现抓挠高峰。这预示白头叶猴夜间休息时处于一个“轻睡眠”状态。同时,雌雄白头叶猴昼夜移动行为差异显著。

关键词: 白头叶猴, 活动频次, 昼夜节律