Abstract
Studies of animal ranging patterns and the influencing ecological factors are useful for understanding the relationship between aspects of animal behavior and ecology. In a year-long study, we investigated the ranging behavior and other determining factors for a group of François’ langur in an isolated habitat of approximately 25.7 ha in Fusui Reserve, China. The François’ langur home range was estimated to be 15.3 ha, covering ∼60% of their total habitat. The mean yearly day range length estimate was 802.5 m (SD=295.5 m). Langurs changed sleeping sites approximately every 3 days, resulting in increases in the amount of grid cells used and the range length. Food availability of flowers and fruits were seasonal, whereas both mature and immature leaves of most trees were perennial. Ranging behavior was not significantly correlated with the availability of mature leaves, immature leaves, buds, fruits (ripe and unripe fruits) or seeds (p>0.05). These results suggested that variations in food type availability were not factors influencing ranging behavior for this langur group, whereas sleeping site changes, and probably predation avoidance, are factors that influence the ranging patterns of the langur group.
Our project is funded by the National Nature Science Foundation of China (No. 31060059), the Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, Resource Monitoring of Trachypithecus francoisi of Guangxi. We thank Louis Deharveng from the Muséum National d’Histoire Naturelle, Paris, France for manuscript editing, and the editor, associate editor and anonymous reviewer for helpful comments and recommendations.
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