关键词: 黑叶猴, 栖息地质量, 活动时间分配, 日活动节律

Abstract: 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.

Key words: Activity budget, Diurnal activity pattern, Francois langur(Trachypithecus francoisi), Habitat quality