A Geometric Approach to Cranial Sexual Dimorphism in the Orang-Utan
A Geometric Approach to Cranial Sexual Dimorphism in the Orang-Utan
复制标题
红毛猩猩颅骨性别二态性的几何方法
作者：
S. Hens
成人颅面形态的量化和比较使用欧几里德距离矩阵分析(EDMA)，这是一种用于形态比较的三维形态计量学方法，它定位了比较组之间的形态差异。结果表明，男性和女性颅骨的差异在数量和程度上都是显著的。面部、颅骨和脑颅表现出最大的二形性，而上颚表现出最小的二形性。幼年个体和完全成年个体之间也存在显著的差异，特别是男性，这支持了男性的性成熟延迟和次性性特征。作为现有的许多新的形态测量技术之一，EDMA有助于识别局部形态差异，并提供了对该物种性别二型性的理解的洞察力，而不是基于线性卡尺测量的传统统计方法。
Adult craniofacial morphology is quantified and compared using Euclidean distance matrix analysis (EDMA), a three-dimensional morphometric method for the comparison of forms, which localizes form differences between comparative groups. Results indicate that the number and magnitude of differences between male and female crania are striking. The face, basicranium and neurocranium exhibit the most dimorphism, while the palate shows the least. Significant differences also exist between young adult and fully adult individuals, especially males, supporting the delayed onset of sexual maturity and secondary sex characteristics in males. As one of the many new morphometric techniques available, EDMA was useful for identifying local form difference and provides insights into the understanding of sexual dimorphism in this species beyond that obtained from traditional statistical methods based on linear caliper measurements.
影响因子：
2.8
作者：
S. Lele
通讯作者：
S. Lele