摘要
对白颊长臂猿(Hylobates leucogenys)一些生态学特性的实地观察结果表明,白颊长臂猿在我省的总数少于40只。其种群数量最多者为5只,最少为2只,严格营“一夫一妻”制。主要觅食植物,占食物种类的90.6％,兼食少量动物,占食物种类的9.4％。每天的觅食高峰出现在早上8:00—10:00。每天平均活动时间为9.5小时,其中觅食、运动和休息所耗时间的比率分别为41.2％、13.1％和45.7％。每天的活动路线长度约为1305米(1024—1586)。
The ecological characteristics of Hylobates leucogenys distributed only in the Nature Sancturay of Meng La, Yunnan Province (21°08'-22°00'N, 101°15' 101°50'E.) were investigated from 1983 to 1988.
The total number of gibbons were less 40. The most individual number of group was 5 while least one was 2.
The habitate of the gibbon situate at the altitude 700-1,000 M. this gibbon feeds chiefly on plants that occured 90.6% of the total food specimens, and eat also small animals that occured 9.4% of the whole food specimens. The time of feeding peak was at 8:00-10:00 a. m.
The fruites were the most preference food of the gibbon following by leaves, buds, flowers and animals. The gibbons spend 38.62%, 35.52%, 17.29%, 4.67% and 3.89% of daily feeding time on those food categories respectively.
Daily activity time was about 9.5 hours. Feeding, travel and rest time occur 41.2%, 13.1% and 45.7% of daily activity time respectively. Daily range was 1305 M. (1024-1586).
关键词
白颊长臂猿
种群结构
生态
Hylobates leucogenys, Population structure, Feeding, Daily activity
