关键词: 黑叶猴, 家域, 日漫游距离, 季节性变化, 食物可利用性

Abstract: To explore whether Francois’ langurs display a specially adapted strategy in karst limestone hills in relationship
to foraging and home range,we studied a group of Francois’langurs (Trachypithecus francoisi) over 12 months in NonggangNature Reserve,Guangxi,Southwest of China. The group’s total home range was 28.75 hm² . They used 8.35 ±4.24 hm² for home range,with an average daily ranging distance of 661.77 ±130.20 m monthly. Home range size and daily ranging distance showed significant seasonal variations. During the rainy season,the group occupied 5.88 ± 1.68 hm² as home range,with an average daily ranging distance of 589.93 ± 120.5 m. During the dry season, they had a home range of 10.83 ± 4.70 hm², with an average daily ranging distance of 733.61 ± 102.34 m. Further analysis showed that the food availability of fruit and young leaves influenced the group’s home range size and daily ranging distance. As the result, the home range of the langurs decreased when fruit and young were abundant, while when fruit and young leaves were scarce and mature leaves abundant, Francois’langurs increased home range size and daily ranging distance,which was similar to most of Colobinae primates. The results indicated the special futures of karst limestone habitat weren’t strong enough to force the langurs to evolve a special adaptation strategy.

Key words: Daily ranging distance, Food availability, Francois’langur(Trachypithecus francoisi), Home range, Seasonal variation