栖息地质量对黑叶猴活动时间分配的影响

2005 年9 月至2006 年8 月,在广西弄岗国家级自然保护区和扶绥珍贵动物保护区各选择一群黑叶猴作为研究对象,采用瞬时扫描取样法收集相关的行为数据。通过比较两个地理种群活动时间分配的数据来探讨栖息地质量对黑叶猴活动时间分配的影响。结果表明:生活在低质量栖息生境的黑叶猴猴群较生活在高质量栖息生境的猴群花费更多的时间休息和觅食,而用于移动和社会活动的时间相应减少。分析表明,栖息地质量的差异所造成的食物可获得性以及食物组成的差异可能是影响黑叶猴群活动时间分配差异的重要因素。虽然不同活动的峰值在日活动节律中出现的时间存在差异,但总的日活动节律在不同地理种群中表现出相同的趋势,即早晨和下午出现两个明显的觅食高峰,而中午则是长时间的休息;移动的高峰通常发生在觅食高峰之前。

Effects of habitat quality on activity budgets of the Fran(c)ois'langur (Trachypithecus francoisi)

We collected behavioral data from Francois'langur (Trachypithecus francoisi) in Fusui Rare and Precious Animal Nature Reserve and Nonggang Nature Reserve,Guangxi Province,China,between September 2005 and August 2006, to explore effects of habitat quality on activity budgets. Habitat quality in Fusui was considered lower than in Nonggang Langurs living in the low quality habitat (Fusui) engaged more in resting and feeding,and spent less time moving and in social activities than did the group in the high quality (Nonggang). We suggest that activity budgets of Francois'langur were influenced by the difference in the availability of food resources and diet composition in two habitats. Although we documented a difference in the time at which activities peaked,the diurnal activity patterns of langur groups in the two Reserves showed similar patterns. There were two feeding peaks,one in the morning another in afternoon,with a midday resting peak in diurnal activity patterns. Peaks in moving behavior often occurred before feeding peaks.