Tague R G
Department of Geography and Anthropology, Louisiana State University, Baton Rouge 70803.
Am J Phys Anthropol. 1989 Sep;80(1):59-71. doi: 10.1002/ajpa.1330800108.
Selection intensity and phenotypic variability are inversely related. It has been hypothesized that, owing to opposing selection pressures on pelvic morphology in females between efficiency in locomotion and obstetric adequacy, female pelvic morphology is less variable than that in males. The hypothesis was supported based on data derived from observational methods of sexing pelves (Meindl et al., 1985). The hypothesis was tested in the present study based on a metrical analysis of the true pelvis. The results show that there are no sexual differences in pelvic variability. Consequently, while males and females are equally variable in the dimensions of the true pelvis, the visual cues that osteologists use to sex pelves are more variable in males.
选择强度与表型变异性呈负相关。据推测，由于女性骨盆形态在运动效率和产科适宜性方面面临相反的选择压力，女性骨盆形态的变异性低于男性。这一假设基于对骨盆进行性别鉴定的观察方法所获得的数据得到了支持（Meindl等人，1985年）。本研究基于对真骨盆的测量分析对该假设进行了检验。结果表明，骨盆变异性不存在性别差异。因此，虽然男性和女性在真骨盆尺寸方面的变异性相同，但骨学家用于鉴别骨盆性别的视觉线索在男性中更具变异性。
