INIBIOMA (CONICET - UNCOMA) Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, 8400 Bariloche, Río Negro, Argentina.
Zoology (Jena). 2009;112(6):425-32. doi: 10.1016/j.zool.2009.03.004. Epub 2009 Sep 3.
Several aspects of the biology of Phymaturus lizards including their herbivorous diet, specialized microhabitat use, and viviparous reproductive mode are highly conserved within the group. Here, we explore two aspects of Phymaturus thermal biology and test for the co-evolution among aspects of the thermal biology in these lizards, such as thermal preferenda and critical temperatures. Secondly, we explore correlations among variation in thermal biology with elevation and latitude. To do so, we used phylogenetically based comparative analyses (PCM) together with conventional statistics. Our results show that thermal biology for Phymaturus is conservative and our data do not suggest the co-evolution of thermal variables. Moreover, we detected low levels of variation in the thermal parameters studied, and no clear relationships between climatic and thermal variables. As a significant association between climatic and thermal variables could be demonstrated for a set of syntopic Liolaemus lizards, we suggest that thermal biology in Phymaturus lizards may be evolutionarily or ecologically constrained.
包括食草性饮食、特殊微生境利用和胎生繁殖方式在内的 Phymaturus 蜥蜴生物学的几个方面在该群体中高度保守。在这里，我们探索了 Phymaturus 热生物学的两个方面，并测试了这些蜥蜴热生物学方面的协同进化，如热偏好和临界温度。其次，我们探索了热生物学与海拔和纬度变化之间的相关性。为此，我们使用了基于系统发育的比较分析（PCM）和常规统计学。我们的结果表明，Phymaturus 的热生物学是保守的，我们的数据并没有表明热变量的共同进化。此外，我们检测到所研究的热参数变化水平较低，并且气候和热变量之间没有明显的关系。由于一组同域的 Liolaemus 蜥蜴中可以证明气候和热变量之间存在显著关联，我们认为 Phymaturus 蜥蜴的热生物学可能受到进化或生态的限制。
