Doctoral Dissertation Improvement: Functions and Consequences of Intergroup Aggression in Tufted Capuchin Monkeys

博士论文改进：簇绒卷尾猴群体间攻击的功能和后果

• 批准号: 0752683
• 负责人: Charles Janson
• 金额: --
• 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: 2008
• 资助国家: 美国
• 起止时间: 2008-05-01 至 2010-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0752683&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Improvement; Functions; Consequences; Doctoral; Dissertation; Improvement; Functions; Consequences

Current models of the evolution of primate behavior suggest that the strength of between-group competition strongly affects fundamental aspects of primate sociality, including female-female and male-female social relationships. Although encounters between groups are found in many species and are often described as aggressive, the functions and consequences of these interactions remain poorly understood. Aggressive behavior during encounters between groups is thought to help defend access to limiting resources or mating opportunities. This study will systematically examine these possible functions of between-group aggression in tufted capuchin monkeys (Cebus apella) at Iguazu National Park, Argentina. The researchers will follow multiple social groups simultaneously and record patterns of individual participation in intergroup encounters, the overall intensity of intergroup aggression, and several factors that may affect these interactions, including the presence of estrous females and vulnerable infants or the proximity to contestable food resources. In addition, the researchers will test if more aggressively successful groups gain or retain access to better quality territories and resources in areas of overlap, using a combination of ecological and behavioral data. The loss or gain of food from encounters and dominance between groups will be compared to similar consequences of aggression among members within a group. To make controlled tests of particular hypotheses, the researchers will simulate the presence of another social group with vocal playback experiments. These experiments will occur near artificially-controlled resources to independently manipulate the social and ecological context of apparent encounters.Previous studies of intergroup aggression in non-human primates have been unable to collect the detailed behavioral and ecological data necessary to distinguish among all the various hypothesized functions of between-group aggression. This research project will address these gaps by systematically examining the importance of competition for mates and critical food resources. The study will also be used to compare with previously studied Peruvian populations that exhibit reduced intergroup aggression, thereby allowing direct examination of the influence of population differences in resource distribution and availability on between-group competition. The project will provide employment and training for Argentine students, members of the Guarani community, and possibly U.S. undergraduate volunteers.

灵长类动物行为进化的当前模型表明，组间竞争的力量强烈影响灵长类动物社会性的基本方面，包括女性和男女的社会关系。尽管在许多物种中发现了群体之间的相遇，并且通常被描述为侵略性，但这些相互作用的功能和后果仍然很少理解。人们认为，在群体之间相遇期间的侵略行为可以帮助捍卫限制资源或交配机会的机会。这项研究将系统地检查阿根廷伊瓜苏国家公园的簇绒尾猴（Cebus apella）中组间侵略的这些可能功能。研究人员将同时关注多个社会群体，并记录个人参与群体间相遇的模式，组间侵略的总体强度以及可能影响这些相互作用的几个因素，包括存在远处的女性和脆弱的婴儿或与可竞争的食品资源的接近。此外，研究人员将使用生态数据和行为数据的结合来测试更积极的成功群体是否获得或保留重叠领域中优质领域和资源的访问。将遭遇的食物损失或群体之间的优势与一组成员之间的侵略性相似的后果进行比较。 为了对特定假设进行受控测试，研究人员将通过声带播放实验模拟另一个社会群体的存在。 这些实验将发生在人为控制的资源附近，以独立操纵明显相遇的社会和生态环境。非人类灵长类动物的群体间侵略的预览研究无法收集分区攻击之间所有各种假设功能所必需的详细行为和生态数据。 该研究项目将通过系统地检查竞争对伴侣和关键食品资源的重要性来解决这些差距。该研究还将用于与先前研究的秘鲁人群进行比较，这些秘鲁人群表现出降低的群体间侵略性，从而可以直接检查资源分布和可用性对组间竞争的人群差异的影响。 该项目将为阿根廷学生，瓜拉尼社区成员以及美国本科志愿者提供就业和培训。