O'Higgins P, Jones N
Department of Anatomy and Developmental Biology, University College, London, UK.
J Anat. 1998 Aug;193 ( Pt 2)(Pt 2):251-72. doi: 10.1046/j.1469-7580.1998.19320251.x.
This paper presents a study of 3-dimensional growth in the facial skeleton of the mangabey, Cercocebus torquatus. The pattern of facial cortical remodelling in this species is already well mapped from an earlier study. In this paper we consider the extent to which these remodelling maps relate to ontogenetic changes in size and shape of the face. This study is based on 31 facial landmarks taken from 49 adult and subadult faces. Our analysis draws on some of the tools of geometric morphometrics and we take this opportunity to describe our implementation of these tools for 3D data. The geometric analysis permits the known remodelling maps to be interpreted in the context of the general pattern of facial growth in this species. We are also able to examine sexual dimorphism in the face of this species and consider the extent to which males and females share similar ontogenetic allometries. Our findings indicate that the general pattern of size-related shape variation during facial growth is more or less identical for males and females up to eruption of the third permanent maxillary molar (M3). After this, ontogenetic allometries appear to diverge. The finding of a common growth allometry that is well approximated for younger specimens by a simple linear model is consistent with the earlier findings of a consistent pattern of facial remodelling up to M3 eruption. We consider the implications of these findings in terms of the potential for these approaches in the study of comparative growth in related species.
本文介绍了一项关于白眉猴（Cercocebus torquatus）面部骨骼三维生长的研究。该物种面部皮质重塑模式已在早期研究中得到充分绘制。在本文中，我们探讨了这些重塑图谱与面部大小和形状的个体发育变化之间的关联程度。本研究基于从49张成年和亚成年面部获取的31个面部地标。我们的分析借鉴了一些几何形态计量学工具，并借此机会描述我们对这些工具在三维数据中的应用。几何分析使已知的重塑图谱能够在该物种面部生长的总体模式背景下得到解读。我们还能够研究该物种面部的两性异形，并考虑雄性和雌性在个体发育异速生长方面的相似程度。我们的研究结果表明，在第三恒上颌磨牙（M3）萌出之前，面部生长过程中与大小相关的形状变化总体模式在雄性和雌性中大致相同。在此之后，个体发育异速生长似乎出现分歧。对于较年轻的标本，通过简单线性模型能很好地近似出共同的生长异速生长，这一发现与早期关于M3萌出前面部重塑模式一致的研究结果相符。我们从这些方法在相关物种比较生长研究中的潜力方面考虑了这些发现的意义。
