Tilson R L
Folia Primatol (Basel). 1981;35(4):259-87. doi: 10.1159/000155979.
This study describes how adults of Kloss's gibbons (Hylobates klossii) inhabiting the central rain forest of Siberut Island, Indonesia, help their offspring achieve reproductive success. Adults of these monogamous apes exclude maturing offspring from the family and territory through intrasexual aggression. Adults may then assist the offspring to establish a territory contiguous to theirs. Aid may take the form of accompanying offspring into suitable areas not yet occupied or forcefully annexing part of an adjacent territory. Replacement of an adult by its offspring may also occur. A conclusion is that the probability of a young gibbon gaining a territory and mate is greater in the proximity of its parental group than in areas farther afield.
本研究描述了生活在印度尼西亚西比路岛中部雨林的克氏长臂猿（Hylobates klossii）成年个体如何帮助其后代获得繁殖成功。这些一夫一妻制的猿类成年个体会通过同性间的攻击行为将发育成熟的后代排除在家庭和领地之外。成年个体随后可能会协助后代建立与它们相邻的领地。帮助的形式可能是陪伴后代进入尚未被占据的适宜区域，或者强行吞并相邻领地的一部分。成年个体也可能会被其后代取代。得出的结论是，幼年长臂猿在其父母群体附近获得领地和配偶的概率要高于在更远的区域。
