Dissertation Research: Metabolic Correlates of Hylid Locomotor Performance and Acoustic Response

目前生态生理学中的一个假说认为， 不同动物在运动生理学上的差异 在自然选择的作用下， 行为 动物通常经历高水平的 持续的行为预计将具有高能力， 有氧能量生产，而低有氧的动物 能力预计只能维持低强度的行为 而且必须依靠厌氧代谢来提供更高水平的 这是不可持续的。 例如，物种 无尾两栖类之间的活动代谢差异， 与运动、觅食、捕食者 回避和召唤行为。 以往的研究还不 在适应性假设之间进行区分（即， 行为和生理学）和替代假设， 生理学上的差异，如身体大小的差异， 生理学与某些未经检验的性状的相关性，或 由蒙古国施加的限制。 拟议的研究将 一组密切相关的生理-行为相关性测试 北美树蛙的近亲。 自适应 生理学变化的显著性将通过 确定由于生殖和身体的变化的分数 大小和分数归因于几个变化 已证明或引证对生存率有影响的变量 和再现（例如，运动表现和呼唤 行为）。 去除影响后持续存在的相关性 身体大小和生育能力将被视为代表 最近的评选结果。

A current hypothesis in ecological physiology states that differences among animal species in the physiology of exercise arose in response to natural selection on the capacity to sustain behavior. Animals that typically undergo high levels of sustained behavior are expected to have high capacities for aerobic energy production, whereas animals with low aerobic capacities are expected to sustain only low intensity behaviors and must rely on anaerobic metabolism to fuel higher levels of activity, which are not sustainable. For example, species differences in activity metabolism among anuran amphibians have been related to differences in locomotor, foraging, predator avoidance, and calling behavior. Previous studies did not distinguish among adaptive hypotheses (i.e. recent selection on behavior and physiology) and alternative hypotheses for differences in physiology, such as differences in body size, correlation of physiology with some unexamined trait, or constraints imposed by phylogeny. The proposed research will test for physiology-behavior correlations in a group of closely related species, the North American treefrogs. The adaptive significance of variation in physiology will be assessed by determining the fraction of variation due to phylogeny and body size and the fraction attributable to variation in several variables that have demonstrated or adduced effects on survival and reproduction (e.g., locomotor performance and calling behavior). Correlations that persist after removing the effects of body size and phylogeny will be deemed to represent the results of recent selection.