Phynotypic and Genetic Evolution of Primate Locomotor Morphology

本项目将测试定量分析中的关键假设 遗传协变保持稳定， 进化时间 这一假设将通过检查 三个灵长类属的运动形态，特别是 绢毛猴（Saguinus fuscicollis，Saguinus oedipus），绒猴 （Callithrix jacchus）和猕猴（Macaca mulatta）。 与这些 三个属，可遗传协变的稳定性将是 在很短的进化时间内， 绢毛猴和绒猴。 模式也将被长期审查 进化时间，与绢毛猴和绒猴相比， 猕猴 四肢骨骼的线性测量， 将分析腰带，以检查性状之间的协变 每个物种的附属物，以及 物种 本研究中使用的样本包含以下个体： 已知的家庭关系。 混合模型分析技术 允许使用所有已知的亲属在估计 遗传、环境和表型协方差结构。 的 研究分类群包括两个树栖四足动物（S. oedipus，C. jacchus），陆生四足动物（C. jacchus）和灵长类动物， 经常通过垂直附着和跳跃运动（S。 fuscicollis）。 此外，本研究将对比不同的 表型和运动组，以提供深入了解 灵长类动物运动形态的进化

This project will test the critical assumption held in quantitative genetics that heritable covariation remains stable over evolutionary time. This assumption will be tested by examining the locomotor morphology of three Primate genera, specifically tamarins (Saguinus fuscicollis, Saguinus oedipus), marmosets (Callithrix jacchus) and macaques (Macaca mulatta). With these three genera, the stability of heritable covariation will be examined over short evolutionary time with comparisons among tamarins and marmosets. Patterns will also be examined over long evolutionary time, with tamarins and marmosets compared to macaques. Linear measurements of the appendicular skeleton and girdles will be analyzed to examine covariation of traits between appendages within each species, and within appendages between species. The samples used in this study contain individuals of known family relationship. Mixed-model analytical techniques allows the use of all known relatives in the estimation of the genetic, environmental and phenotypic covariance structure. The study taxa include two arboreal quadrupeds (S. oedipus, C. jacchus), a terrestrial quadruped (C. jacchus) and a primate which frequently locomotes by vertical clinging and leaping (S. fuscicollis). In addition, this study will contrast different phenotypic and locomotor groups to provide insight into the evolution of primate locomotor morphology.