Goldstein S, Post D, Melnick D
Am J Phys Anthropol. 1978 Nov;49(4):517-32. doi: 10.1002/ajpa.1330490412.
The relations between two tooth indices, post-canine area and incisor width in the upper jaw, and three variables, diet, body weight and body weight dimorphism, were examined separately for the males and females of 29 cercopithecoid species. Each species was assigned to one of three diet classes (folivore, frugivore, omnivore). Data on the other variable consisted of species means (log-transformed) obtained from published sources. The analytic techniques used were bivariate and multiple regression, the tooth indices being the dependent variables. All tooth indices scaled isometrically within diet classes, and all except female incisor width scaled with positive allometry across diet classes. In both sexes, the body weight adjusted mean incisor width of folivores was significantly smaller than that of either frugivores or omnivores. In the females, the body weight adjusted mean post-canine areas did not differ significantly across diet classes, while in the males the omnivores had a larger body weight adjusted mean post-canine area than either the folivores or frugivores. Female post-canine area was the only tooth index for which body weight dimorphism was a significant predictor. Extrapolations of these findings to other extant and to fossil primate species are discussed.
针对29种猕猴科物种的雄性和雌性个体，分别研究了两个牙齿指数（上颌犬齿后区域和门齿宽度）与三个变量（饮食、体重和体重两性异形）之间的关系。每个物种被归入三个饮食类别之一（食叶动物、食果动物、杂食动物）。关于其他变量的数据由从已发表资料中获取的物种平均值（经对数转换）组成。所使用的分析技术是双变量和多元回归，牙齿指数作为因变量。所有牙齿指数在饮食类别内呈等比例缩放，除雌性门齿宽度外，所有指数在不同饮食类别间呈正异速生长缩放。在两性中，食叶动物经体重调整后的平均门齿宽度显著小于食果动物或杂食动物。在雌性中，不同饮食类别的经体重调整后的平均犬齿后区域没有显著差异，而在雄性中，杂食动物经体重调整后的平均犬齿后区域大于食叶动物或食果动物。雌性犬齿后区域是唯一一个体重两性异形为显著预测因子的牙齿指数。讨论了将这些发现外推到其他现存和化石灵长类物种的情况。
