Yeager Carey P
Psychology Department, University of California, Davis.
Am J Primatol. 1990;20(2):95-106. doi: 10.1002/ajp.1350200204.
Proboscis monkey (Nasalis larvatus) social organization was studied at the Tanjung Puting National Park in Kalimantan Tengah, Indonesia, for 12 months. Data were collected on one-male groups and all-male groups by using scan sampling and event sampling while following groups. Evening census surveys were also conducted. Proboscis monkeys were found to follow the typical Asian colobine pattern of one-male social groups, with extra-group males forming all-male groups. These groups appear stable, with few changes in membership. One-male groups appear to be "female bonded"; adult females direct affiliative behaviors towards their offspring and other adult females, not towards the male. Nearest-neighbor data indicate some peripheralization of juvenile animals.
在印度尼西亚中加里曼丹的丹戎普丁国家公园对长鼻猴（纳氏长鼻猴）的社会组织进行了为期12个月的研究。在跟踪猴群时，通过扫描取样和事件取样的方法收集了关于单雄群体和全雄群体的数据。还进行了夜间普查。长鼻猴遵循典型的亚洲叶猴单雄社会群体模式，群外雄性组成全雄群体。这些群体看起来很稳定，成员变化很少。单雄群体似乎是“雌性联结”的；成年雌性将亲和行为指向它们的后代和其他成年雌性，而不是雄性。最近邻数据表明幼年动物有一些边缘化现象。
