Dissertation Research: Sexual Dimorphism in the Catarrhine Teeth

本研究的主要目的是了解 卡他鼻犬齿两性异形的原因 灵长类动物 目标将通过收集牙齿大小来实现 灵长类动物的一个大型机构的测量。 大样本 将获得每个物种的雄性和雌性， 对两性异形变异的全面记录， 允许在所有分类学水平上比较两性异形 在灵长类动物中。 体型的影响， 大小二型性和雌雄异株性 将仔细研究二态性。 科学家们对犬齿减少的原因和 相关的减少性二型在犬齿的 人类血统 这项研究将测试几个假设，如 两性异形的模式是否是由 雄性和雌性灵长类动物之间的劳动分工，或者 喂食小物体会导致犬类之间的联系减少 切缘复位以使下颌运动更有效。

The primary objective of this research is to understand the reasons for sexual dimorphism of canine teeth in the catarrhine primates. The goal will be approached by collecting tooth size measurements for a large body of primates. Large samples of males and females for each species will be obtained to allow a thorough documentation of variation of sexual dimorphism, allowing comparisons of sexual dimorphism at all taxonomic levels within the anthropoid primates. The effects of body size, body size dimorphism and phylogeny on the expression of sexual dimorphism will be carefully studied. Scientists disagree as to the cause of canine reduction and the associated reduction sexual dimorphism in the canine teeth of the human lineage. This research will test several hypotheses, such as whether patterns of sexual dimorphism result from unequal division of labor between male and female primate, or whether small object feeding has caused canine reduction in association with incisal reduction to allow more efficient jaw movements.