Age‐ and sex‐based patterns of positional behavior and substrate utilization in the golden snub‐nosed monkey (Rhinopithecus roxellana)
Age‐ and sex‐based patterns of positional behavior and substrate utilization in the golden snub‐nosed monkey (Rhinopithecus roxellana)
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DOI：
10.1002/ajp.22314
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发表时间：
2015-01
影响因子：
2.4
通讯作者：
Wenjie Zhu;P. Garber;Michelle Bezanson;X. Qi;Baoguo Li
中科院分区：
文献类型：
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作者：
Wenjie Zhu;P. Garber;Michelle Bezanson;X. Qi;Baoguo Li
身体质量在灵长类动物的位置行为中起着重要的作用，在性二态树栖灵长类动物物种中，可能会影响未成年和成年个体如何穿越森林树冠和获取食物资源。在这项研究中，我们研究了野生金丝猴（Rhinopithecus roxellana）的位置行为和底物利用的基于年龄和性别的模式，金丝猴是亚洲的一种濒危物种。结果表明，在所有年龄和性别组中，坐姿是最常见的进食和休息姿势，在旅行中，四足步行是主要的运动行为。尽管成年雄性R.据报道，roxellana的体重几乎是成年雌性的两倍，我们发现在进食和旅行过程中，在位置方面没有显着的性别差异。此外，我们发现，虽然婴儿和青少年使用与成年人相似的姿势和运动行为，但年轻的金丝猴更频繁地从事冒险或逃避行为，如攀爬，跑步，跳跃和前肢悬挂。随着年龄的增长，四足行走和下降（身体质量在空中向下位移，不需要后肢推进）的使用增加，跳跃，悬吊姿势和桥接的使用减少。最后，考虑到成年和未成年金丝猴的位置库的差异，我们认为位置行为的个体发生模式的研究应该强调在每个生命阶段生存所需的东西，而不是匹配成年库所需的东西。Am. J. Primatol. 77：98-108，2015.© 2014 Wiley Periodicals，Inc.
Body mass plays an important role in primate positional behavior and in sexually dimorphic arboreal primate species may influence how immature and adult individuals travel through the forest canopy and access food resources. In this study, we examined age‐ and sex‐based patterns of positional behavior and substrate utilization in wild golden snub‐nosed monkeys (Rhinopithecus roxellana), an endangered species of Asian colobine. Our results indicated that among all age and sex classes, sitting was the most common feeding and resting posture and during travel, quadrupedal walking was the dominant locomotor behavior. Despite the fact that adult male R. roxellana are reported to exhibit a body mass nearly two times that of adult females, we found no significant sex differences in the positional repertoire during feeding and traveling. In addition, we found that while infants and juveniles used similar postural and locomotor behaviors as their adult counterparts, younger golden snub‐nosed monkeys more frequently engaged in risky or escape‐oriented behaviors such as climbing, running, leaping, and forelimb suspension. With increasing age, the use of quadrupedal walking and dropping (downward in‐air displacement of body mass that does not require hindlimb propulsion) increased and the use of leaping, suspensory postures, and bridging decreased. Finally, given differences in the positional repertoire of adult and immature golden snub‐nosed monkeys, we argue that studies of ontogenetic patterns of positional behavior should emphasize what it takes to survive at each life stage rather than what it takes to match an adult repertoire. Am. J. Primatol. 77:98–108, 2015. © 2014 Wiley Periodicals, Inc.