Dissertation Research: Ray Shafts Structure, Hand and Foot Postures, and Substrate Utilisation in Old World Monkeys

本研究的主要目的是建立 手指和脚趾骨结构与数量之间的关系 猴子在地面和树上的时间。 研究人员预测，手指和脚趾上的压力 生活在地上的动物的骨头应该比 那些大部分时间都在树上的动物 来测试是否 如果这个预测是正确的，研究人员将计算出 足趾和手指骨干的强度， 工程方程 方程中使用的值为 通过测量手和脚骨的X光片获得 10种猴子 圈养和自由放养的 每一种猴子都会被拍到走路和跑步。 这些影片将被用来确定手和脚的姿势 每个物种在地面上行走时通常使用， 树枝 据认为，人类的血统是从 在数百万年的时间里， 花越来越多的时间在地面上。 本研究结果可 有助于重构树实度特征 早期类人猿

The primary objective of this research is to establish the relationship between finger and toe bone structure and the amount of time monkey species spend on the ground and in the trees. Researchers have predicted that stress on the finger and toe bones of animals living on the ground ought to be greater than those spending most of their time in the trees. To test whether this prediction is correct, the investigator will calculate the strength of toe and finger bone shafts using structural engineering equations. The values used in the equations will be obtained from measurements of radiographs of hand and foot bones of ten monkey species. Captive and free-ranging individuals of each of the monkey species will be filmed walking and running. The films will be used to determine the hand and foot postures each species commonly uses when walking on the ground and branches. It is thought that the human lineage evolved from arboreal ancestors and, over several million years, evolved to spend more and more time on ground. Results from this study may help in reconstructing the degree of arboreality characteristic of early hominoids.