首页> 外文期刊>Revista Mexicana de Biodiversidad >Sistemática filogenética de las lagartijas del género Stenocercus (Squamata: Iguania) de los Andes del norte
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Sistemática filogenética de las lagartijas del género Stenocercus (Squamata: Iguania) de los Andes del norte

机译:安第斯山脉北部Stenocercus(Squamata:Iguania)蜥蜴的系统发育学

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摘要

The genus Stenocercus is composed of 61 species that occur mainly in the Andes and adjacent lowland areas (0-4 000 m) from northern Colombia and Venezuela to central Argentina. In this study, I performed parsimony and Bayesian analyses to infer the phylogenetic relationships among the 20 species of Stenocercus that occur in the northern Andes (Ecuador, Colombia, and Venezuela); I analyzed morphological, molecular, and combined datasets. These analyses resulted in similar topologies, which indicate that species of Stenocercus from the northern Andes are nested within 2 major clades. One of these clades contains 6 species occurring between southern Ecuador and southern Colombia, whereas the other clade includes 13 species that occur from southern Ecuador to northern Colombia and Venezuela. The results also suggest that the recent uplift of the northern Andes has had a major impact on the evolution of Stenocercus.
机译:Stenocercus属由61个物种组成,主要分布在安第斯山脉和从哥伦比亚北部和委内瑞拉到阿根廷中部的相邻低地地区(0-4 000 m)。在这项研究中,我进行了简约和贝叶斯分析,以推断在安第斯山脉北部(厄瓜多尔,哥伦比亚和委内瑞拉)发生的20种中华角叉菜属之间的系统发育关系。我分析了形态,分子和组合数据集。这些分析产生了相似的拓扑结构,这表明来自安第斯山脉北部的食肉丝角菌的物种嵌套在两个主要进化枝中。其中一个进化枝包含6种在厄瓜多尔南部和哥伦比亚南部之间的物种,而其他进化枝包含13种从厄瓜多尔南部到哥伦比亚北部和委内瑞拉的物种。研究结果还表明,最近安第斯山脉北部的隆升对硬皮角Ste的演变产生了重大影响。

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