Dissertation Research: Splitting and Joining Decisions, and Adaptations to Temporal Resource Variation in Long-Haired Spider Monkeys (Ateles Belzebuth Belzebuth)

论文研究：长毛蜘蛛猴的分裂和连接决策以及对时间资源变化的适应 (Ateles Belzebuth Belzebuth)

• 批准号: 9979760
• 负责人: Charles Janson
• 金额: $ 1.1万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-11-01 至 2000-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9979760&HistoricalAwards=false
• 关键词: Dissertation; Research; Splitting; Joining; Decisions

This project will investigate the fission-fusion behavior of long-haired spider monkeys (Ateles belzebuth belzebuth) in the Yasuni National Park, Ecuador, and its relationship to ecological and social factors. Spider monkeys live in social groups in which all of the members of a community are rarely in the same place at the same time. Instead, subsets (subgroups) of the community associate temporarily and change associations frequently. Few studies have addressed what causes individuals to split from or join these subgroups. This project will estimate how the expectation of the amount of fruit in feeding trees affects subgroup splitting decisions, the competitive or cooperative nature of subgroup fusions, and to what extent subgroup changes are influenced by non-food-related causes, such as social factors. To interpret these issues, this project will provide evidence of the level at which spider monkeys understand where to find feeding trees, and when those trees can be profitably visited. To accomplish these goals, adult females will be followed for two-week periods from dawn to dusk to collect data on subgroup changes and resource use. Additionally, data on the fruiting patterns of important feeding trees will be collected to measure fine-scale changes in fruit abundance. This project will clarify our knowledge of why subgroups form and split, providing a clearer understanding of the factors causing the evolution of a fission-fusion society, and thereby provide important comparative information for the understanding of the evolution of primate social systems. Additionally, it will provide evidence bearing upon the possession of mental maps by primates, and will provide some of the first data on primate understanding of temporal variation in fruit availability.

该项目将调查厄瓜多尔Yasuni国家公园的长发蜘蛛猴（Ateles Belzebuth Belzebuth）的裂变融合行为及其与生态和社会因素的关系。 蜘蛛猴生活在社会群体中，在社会群体中，社区的所有成员很少同时在同一地方。 取而代之的是，社区的子集（子组）临时交往，并经常更改关联。 很少有研究解决了导致个人与这些亚组分开或加入这些亚组的原因。 该项目将估计喂养树木中对水果量的期望如何影响亚组融合的竞争性或合作性质，以及亚组融合的竞争性或合作性质以及亚组变化在多大程度上受到与非食品相关的原因（例如社会因素）的影响。 为了解释这些问题，该项目将提供证据，证明蜘蛛猴了解在哪里可以找到喂养树木，以及何时可以盈利这些树木。为了实现这些目标，从黎明到黄昏，将遵循成年女性，以收集有关子组变更和资源使用的数据。 此外，将收集有关重要喂养树的果实模式的数据，以测量水果丰度的细尺度变化。该项目将阐明我们对为什么子群体形成和分裂的了解，从而更清楚地了解导致裂变融合社会演变的因素，从而为理解灵长类动物社会系统的演变提供了重要的比较信息。 此外，它将提供有关灵长类动物拥有心理图的证据，并将提供一些关于灵长类动物对水果可用性时间变化的了解的第一批数据。