Dissertation Research: A Phylogenetic Perspective on the Reaction Norms in the Salamander Family Plethodontidae

9321323觉醒这是一项研究环境在生物之间产生差异中的作用的建议，以火蜥科的Plethodontidae为模型。该项目将研究蜥蜴科Plethodontidae的躯干脊椎数量与发育温度之间的反应标准(差异范围)。反应规范将通过在不同温度环境下提升离合器来确定。然后，这些数据将在这些火蜥蜴的系统发育(谱系)假说的框架内进行检验。%这项工作将揭示1)这一解剖系统的基本变化模式，特别是由环境变化决定的可塑性的数量；2)火蜥属蝙蝠属地理差异的原因基础；3)可塑性与树干脊椎数量和其他解剖特征的物种间差异的关系。这将对脊椎动物反应规范中的解剖可塑性现象有很大的帮助。

9321323 Wake This is a proposal to study the role of the environment in generating differences among organisms, using the salamander family Plethodontidae as a model. The project will examine the reaction norm (range of differences) of number of trunk vertebrae with respect to developmental temperature in the salamander family Plethodontidae. Reaction norms will be determined by raising clutches in different temperature environments. These data will then be examined within the framework of a phylogenetic (genealogical) hypothesis for these salamanders. %%% This work will reveal 1) basic patterns of change in this anatomical system, particularly in the amount of plasticity as determined by environmental variance; 2) the causal basis of geographic variation in the salamander genus Batrachoseps; and 3) the relationship of plasticity to among-species variation in number of trunk vertebrae and other anatomical traits. This will shed much light on the phenomenon of anatomical plasticity in reaction norms in vertebrates.