Effects of predation risk on the grouping patterns of white-bellied spider monkeys (Ateles belzebuth belzebuth) in Western Amazonia.
Effects of predation risk on the grouping patterns of white-bellied spider monkeys (Ateles belzebuth belzebuth) in Western Amazonia.
复制标题
捕食风险对亚马逊流域西部白腹蜘蛛猴（Ateles belzebuth belzebuth）群体模式的影响。
DOI：
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复制
发表时间：
2013
影响因子：
2.8
通讯作者：
A. Di Fiore
中科院分区：
文献类型：
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作者：
A. Link;A. Di Fiore
捕食被认为是影响哺乳动物社会进化的最重要因素之一。虽然捕食风险被认为会影响大多数昼行灵长类动物的行为和分组模式，但支持这一假设的证据仍然有限。矿物舔使用的一组白腹蛛猴（Ateles belzebuth）的空间和时间模式进行了评估，越来越多的证据表明，矿物舔被认为是相对高的捕食风险的新热带灵长类动物的领域。矿物质舔周围的区域是研究组的家庭范围内最密集使用的区域，特别是大型猴子亚组，并且矿物质舔访问日与无舔访问日的平均亚组大小存在差异。此外，在矿物质舔访问的日子里，亚组大小达到最大值，特别是在舔访问期间。最后，与非访视日的匹配时间窗相比，访视日亚组在到达舔体前2小时内显示出更大的尺寸增加和更高的融合率。总之，这些结果提供了一个例子，说明灵长类动物如何采用行为策略，可能会减少捕食的影响。这项研究还表明，具有高度裂变融合动态特征的分类群如何使我们能够测试有关社会生态变量对灵长类动物分组模式影响的假设。
Predation is proposed to be one of the most important factors influencing the evolution of mammalian societies. Although predation risk is thought to influence both the behavior and grouping patterns of most diurnal primates, evidence supporting this hypothesis is still limited. The spatial and temporal patterns of mineral lick use by one group of white-bellied spider monkeys (Ateles belzebuth) were evaluated, based on the growing evidence that mineral licks are perceived as areas of relative high predation risk by Neotropical primates. The area immediately surrounding the mineral lick was the most intensively used area within the home range of the study group, particularly by large subgroups of monkeys, and there were differences in mean subgroup size on days of mineral lick visitation versus days without lick visits. Additionally, on days of mineral lick visitation, subgroup size reached its maximum specifically during the period of lick visitation. Finally, on visit days subgroups showed a greater increase in size and higher fusion rates in the 2 hr before arriving at the lick in comparison with matched time windows on non-visit days. Together, these results provide an example of how primates employ behavioral strategies that might reduce the effects of predation. This study also demonstrates how taxa characterized by a high degree of fission-fusion dynamics can allow us to test hypotheses regarding the effects of socioecological variables on primate grouping patterns.