PRF/J: Craniofacial Integration in Growth and Phylogeny: Analysis by Principal Warps

形态整合可以被定义为一个 将一种形态变形为另一种形态的变形。 一 如果变形作用， 在全球范围内;如果区域由部分组成， 经历不同的转变。 这个的目标 博士后项目是：（1）确定综合部分 新大陆鼠科啮齿动物的头骨和下颚;（2） 将通过形态测定分析检测到的部分与 由发育理论和功能形态学预测;以及 (3)探讨发展融合单位是否继续融合 通过Eschergeny。 已知年龄的棉鼠组织样本 Sigmodon fulviventer，将被探索用于个体发育 整合; S. fulviventer、黄腹鼠鲨S.具硬毛的 berlandieri，S. hispidus komareki，Neotoma floridana，Peromyscus leucopus和P. maniculatus将进行系统发育分析 一体化 形状坐标的变化将用于分析 颅骨和下颌区域内和区域间的转换 由于发展的原因， 起源或功能。 统一的，全球性的，但不是统一的， 局部非线性都将被分析。 的层次结构 将通过应用该方法来构造集成部件 分解非全局组件的主扭曲 如由“弯曲能量”的量所确定的分级地 需要位移的地标，无论仿射 转型 主要的扭曲可以用来分类 形状变化的特征，每一个都有自己的几何尺度， 并研究在以下条件下潜在弯曲能的变化： 逐渐增大的几何尺度。 这项为期一年的研究金活动将在 密歇根大学。

Morphological integration can be defined as a characteristic of a transformation that deforms one morphology into another. A region of morphology is integrated if the deformation acts globally; regions are poorly integrated if they comprise parts that undergo different transformations. The goals of this postdoctoral project are to: (1) identify integrated parts of the skull and jaw of species of New World murid rodents; (2) compare parts detected by morphometric analysis to those predicted by developmental theory and functional morphology; and (3) explore if developmentally integrated units remain integrated through phylogeny. Known-age tissue samples of the cotton rat, Sigmodon fulviventer, will be explored for ontogenetic integration; adult samples of S. fulviventer, S. hispidus berlandieri, S. hispidus komareki, Neotoma floridana, Peromyscus leucopus and P. maniculatus will be analyzed for phylogenetic integration. Changes in shape coordinates will be used to analyze transformations within and between regions of the skull and jaw hypothesized a priori to be integrated because of developmental origin or function. The uniform, global but not uniform, and localized non-linearities will all be analyzed. The hierarchy of integrated parts will be constructed by application of the method of principal warps which decomposes non-global components hierarchically as determined by the amount of "bending energy" required to displace the landmarks, regardless of the affine transformation. The principal warps can be used to categorize the features of shape change, each at its own geometric scale, and to investigate variation in the underlying bending-energy at progressively larger geometric scales. This one-year fellowship activity will take place at the University of Michigan.