Enigmatic diversity of the maxillary sinus in macaques and its possible role as a spatial compromise in craniofacial modifications
Enigmatic diversity of the maxillary sinus in macaques and its possible role as a spatial compromise in craniofacial modifications
复制标题
猕猴上颌窦的神秘多样性及其在颅面修饰中作为空间妥协的可能作用
DOI：
10.1007/s11692-016-9369-4
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发表时间：
2016
影响因子：
2.5
通讯作者：
Nishimura TD
中科院分区：
文献类型：
--
作者：
Ito T;Nishimura TD
了解形态多样性的进化意义是进化生物学的一个主要目标。鼻窦是面部充气的中空空间，作为最有趣的特征之一，它表现出意想不到的变化，引起了研究人员的注意。猕猴是一种已经完成适应性辐射的灵长类动物，因此为研究表型多样化过程提供了一个极好的机会。利用猕猴17种172个标本的计算机断层扫描图像，应用几何形态计量学和多变量分析对上颌窦（最大的鼻窦之一）、外颅面形状和鼻腔进行了定量评价。然后，我们应用系统发育比较方法来测试它们的形态相互作用，系统发育和生态地理意义。结果表明，上颌窦的相对大小与鼻腔的相对大小和颧颌面形状有显著的相关性。鼻腔的相对大小具有生态地理相关性和高系统发育信号，而颧颌面形状在生态地理和系统发育上不相关。上颌窦与经历了不同进化过程的多种周围性状的显著相互作用，可能使上颌窦表现出神秘的多样性，这种多样性不依赖于系统发育和生态。上颌窦位于鼻气道和外脸之间，其柔韧性可能在颅面整形中起到空间妥协的作用。
Understanding the evolutionary significance of morphological diversity is a major goal of evolutionary biology. Paranasal sinuses, which are pneumatized hollow spaces in the face, have attracted attention from researchers as one of the most intriguing traits that show unexpected variations. Macaques are one genus of primates that have accomplished adaptive radiation and therefore present an excellent opportunity to investigate the phenotypic diversification process. Using the large data set of computed tomography images of macaques (172 specimens from 17 species), we applied geometric morphometrics and multivariate analyses to quantitatively evaluate the maxillary sinus (one of the largest paranasal sinuses), the outer craniofacial shape, and nasal cavity. We then applied phylogenetic comparative methods to test their morphological interactions, phylogenetic, and ecogeographical significances. The results showed that the relative maxillary sinus size was significantly associated with the relative nasal cavity size and with the zygomaxillary surface shape. The relative nasal cavity size had ecogeographical correlations and high phylogenetic signal, whereas the zygomaxillary surface shapes were ecogeographically and phylogenetically irrelevant. The significant interactions with multiple surrounding traits that have experienced different evolutionary processes probably enable the maxillary sinus to show enigmatic diversity, which is independent of phylogeny and ecology. The pliable nature of the maxillary sinus, which is positioned between the nasal airways and the outer face, may play a role as a spatial compromise in craniofacial modifications.