关键词: :黑叶猴, 熊猴, 活动时间分配, 季节性

Abstract: We collected behavioral data from one group of Francois’langurs (Trachypithecus francoisi) and two groups of
sympatric Assamese macaques (Macaca assamensis) during September 2005 - August 2006 at Nonggang Nature Reserve, Guangxi Province,China,using instantaneous scan sampling method. Our objective was to explore the influence of temporal and spatial distribution of food resources on activity budgets of these sympatric primate. Activity budgets were significantly different. Francois’langurs spent a higher proportion of time resting than Assamese macaques. Assamese macaques spent more time moving than Francois’langurs. These sympatric primates adopt different strategies in response to seasonal scarcities of preferred foods. When availability of young leaves and fruits decreased during the dry season,Francois’langurs increased time feeding and moving,and reduced time resting. Conversely,Assamese macaques reduced time moving and spent more time resting. We suggest that the differences in activity budgets of sympatric Francois’langurs and Assamese
macaques were related to the variations in the availability of food resources or their diet composition.

Key words: Activity budget, Assamese macaque(Macaca assamensis), Francois’langur(Trachypithecus francoisi)