Zhenhe Liu, Yongzu Zhang, Haisheng Jiang, Southwick Charles
South China Institute of Endangered Animals, Guangzhou, Beijing, China.
Department of Environmental, Population and Organismic Biology, University of Colorado, Boulder.
Am J Primatol. 1989;19(4):247-254. doi: 10.1002/ajp.1350190406.
The Hainan gibbon continues to survive in Bawanglin Nature Reserve in four social groups totalling 21 individuals. Twelve births have occurred since 1982, and 11 of these individuals survive in 1989. Only three of these 12 births have been females, however. The total female population consists of 6 adult females, two of which are at least 19 years old, and three juvenile females born since 1985. Two of the four social groups have only one adult female each and no juvenile females. All four groups are well protected, but their survival is precarious.
海南长臂猿继续在霸王岭自然保护区生存，分为四个社会群体，共计21只个体。自1982年以来已出生12只，其中11只在1989年存活。然而，这12只出生的个体中只有3只是雌性。雌性总数包括6只成年雌性，其中2只至少19岁，以及3只1985年以来出生的幼年雌性。四个社会群体中有两个群体各只有一只成年雌性，没有幼年雌性。所有四个群体都受到了良好的保护，但它们的生存仍然岌岌可危。
