Doctoral Dissertation Research: Positional Behavior and Limb Use in Cebus, Alouatta, and Ateles
博士论文研究:Cebus、Alouatta 和 Ateles 的位置行为和肢体使用
基本信息
- 批准号:0228924
- 负责人:
- 金额:$ 0.78万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2003
- 资助国家:美国
- 起止时间:2003-02-15 至 2004-01-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Studies of positional behavior (locomotion and posture) are central to key issues in biological anthropology including primate origins and arboreal adaptations, hominoid climbing, and hominid bipedalism. The study of locomotion and posture provides critical information concerning ecological, anatomical and evolutionary relationships in living species, a comparative framework for interpretation of the fossil record, and as an educational tool for conservation and ecological planning. This research examines the ontogeny (the life history of an individual) of positional behavior and details of limb and prehensile-tail use in three New World primate species (Ateles geoffroyi, Alouatta palliata, and Cebus capucinus) inhabiting a tropical rainforest in Costa Rica. During the course of growth and development, individuals face different challenges in exploiting their environment. Ontogenetic data allow assessment of behavioral and morphological changes as they occur and developmental constraints on positional behavior among closely-related species. While ontogeny is critical to our understanding of positional behavior, there are no field studies that assess its effects on New World primates. White-faced capuchins (Cebus), black handed spider monkeys (Ateles), and mantled howling monkeys (Alouatta) will be examined at La Suerte Biological Research Station in Costa Rica. Behavioral observations in conjunction with digital video recording will be used to document positional strategies during infancy, juvenescence, and adulthood to address the following objectives. First, this research will provide a comprehensive, systematic, and quantified description of expressed behavior, functional morphology, and ecological context of three prehensile-tailed species. Second, data on juvenile and adult positional strategies will provide information on how growth and development may influence feeding and foraging strategy, social behavior, and ultimately survival during the juvenile period. Third, because the prehensile tail has evolved independently in the subfamily Atelinae (Alouatta, Ateles, Brachyteles, and Lagothrix) and Cebus, this study will allow comparison of the prehensile tail as a shared-derived feature in two more closely-related species (Ateles and Alouatta), and as an analogous feature in the more distantly- related Cebus. Closely-related howler and spider monkeys are biobehavioral variations on the ateline theme, that is, large-bodied, long-tailed New World primates with extensive gripping capabilities. Capuchin monkeys, also with prehensile abilities of the tail, differ in body size and tail anatomy (and evolutionary history). This project will contribute a comprehensive, systematic, and quantified description of expressed behavior and ecological context in three New World primates inhabiting the same rainforest. By focusing on questions of ontogenetic differences in positional behavior, this study examines the degree to which adult-like patterns of locomotion and posture develop in primate ontogeny and how patterns may differ within and between age and sex categories. Finally, the results of this research will be used in the conservation planning and maintenance of the rainforest surrounding La Suerte Biological Research Station. As part of these efforts, results will contribute to educational programs in the surrounding community and in the United States.
位置行为(运动和姿势)的研究是生物人类学的核心问题,包括灵长类动物的起源和树栖适应,类人猿攀爬和类人猿两足行走。运动和姿势的研究提供了有关生物物种的生态,解剖和进化关系的关键信息,解释化石记录的比较框架,并作为保护和生态规划的教育工具。本研究探讨了居住在哥斯达黎加热带雨林中的三种新大陆灵长类动物(Ateles geoffroyi,Alouatta palliata和Cebus capucinus)的位置行为和肢体和尾巴使用细节的个体发育(个体的生活史)。在成长和发展的过程中,个人在利用环境方面面临着不同的挑战。 个体发生数据允许评估行为和形态的变化,因为它们发生和发展的限制之间的密切相关的物种的位置行为。 虽然个体发育对我们理解位置行为至关重要,但没有实地研究评估其对新世界灵长类动物的影响。将在哥斯达黎加的La Suerte生物研究站对白脸卷尾猴(Cebus)、黑手蜘蛛猴(Ateles)和披着斗篷的嚎叫猴(Alouatta)进行检查。 结合数字视频记录的行为观察将用于记录婴儿期、青少年期和成年期的位置策略,以实现以下目标。首先,本研究将提供一个全面的,系统的,和量化的描述表达的行为,功能形态,和生态环境的三个双尾物种。第二,青少年和成年人的位置策略的数据将提供有关生长和发展如何影响喂养和觅食策略,社会行为,并最终在青少年时期的生存信息。 第三,由于扁尾在Atelinae亚科(Alouatta,Ateles,Brachyteles和Lagothrix)和Cebus中独立进化,本研究将允许比较扁尾作为两个更密切相关的物种(Ateles和Alouatta)的共享衍生特征,以及作为更远相关的Cebus的类似特征。 与之关系密切的吼猴和蜘蛛猴是ateline主题的生物行为变体,ateline主题是身体大,长尾的新世界灵长类动物,具有广泛的抓握能力。 卷尾猴的尾巴也具有伸缩能力,它们在身体大小和尾巴解剖结构(以及进化历史)上有所不同。 这个项目将提供一个全面的,系统的,和量化的描述表达的行为和生态环境中的三个新世界灵长类动物居住在同一雨林。 通过关注位置行为的个体发育差异问题,本研究探讨了灵长类动物个体发育中类似成年人的运动和姿势模式的发展程度,以及年龄和性别类别之间的模式如何不同。 最后,这项研究的结果将用于保护规划和维护的La Suerte生物研究站周围的雨林。 作为这些努力的一部分,结果将有助于在周围社区和美国的教育计划。
项目成果
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