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亚苏尼国家公园长毛蜘蛛猴(Ateles Belzebuth Belzebuth)的裂变-融合行为及其与生态和社会因素的关系。蜘蛛猴生活在一个社会群体中，在这个群体中，社区的所有成员很少同时出现在同一个地方。相反，社区的子集(子组)临时关联并频繁更改关联。很少有研究探讨是什么导致个人从这些亚群中分离出来或加入这些亚群。这个项目将估计喂食树的果量的预期如何影响亚群分裂决定，亚群融合的竞争或合作性质，以及亚群变化在多大程度上受到非食物相关原因的影响，如社会因素。为了解释这些问题，这个项目将提供证据，表明蜘蛛猴在多大程度上了解哪里可以找到觅食的树，以及何时可以有利可图地访问这些树。为了实现这些目标，成年雌性将被跟踪两周，从黎明到黄昏，收集关于亚群变化和资源使用的数据。此外，还将收集有关重要饲用树的结果模式的数据，以衡量水果丰度的细微变化。这个项目将澄清我们对亚群形成和分裂的认识，更清楚地了解导致裂变聚变社会进化的因素，从而为理解灵长类社会制度的进化提供重要的比较信息。此外，它将提供与灵长类拥有心理地图有关的证据，并将提供一些关于灵长类对水果可获得性的时间变化的理解的原始数据。