Department of Biology & Burke Museum of Natural History and Culture, University of Washington, Seattle, WA, USA; Moore Laboratory of Zoology, Occidental College, Los Angeles, CA, USA.
Moore Laboratory of Zoology, Occidental College, Los Angeles, CA, USA; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, Mexico.
Mol Phylogenet Evol. 2018 Aug;125:78-84. doi: 10.1016/j.ympev.2018.03.024. Epub 2018 Mar 16.
Mountain formation in Mexico has played an important role in the diversification of many Mexican taxa. The Trans-Mexican Volcanic Belt in particular has served as both a cradle of diversification and conduit for dispersal. We investigated the evolutionary history of the Isthmura bellii group of salamanders, a widespread amphibian across the Mexican highlands, using sequence capture of ultraconserved elements. Results suggest that the I. bellii group probably originated in southeastern Mexico in the late Miocene and later dispersed across the Trans-Mexican Volcanic Belt and into the Sierra Madre Occidental. Pre-Pleistocene uplift of the Trans-Volcanic Belt likely promoted early diversification by serving as a mesic land-bridge across central Mexico. These findings highlight the importance of the Trans-Volcanic Belt in generating Mexico's rich biodiversity.
墨西哥的山脉形成在许多墨西哥分类群的多样化中发挥了重要作用。特别是跨墨西哥火山带既是多样化的摇篮，也是扩散的渠道。我们使用超保守元素的序列捕获来研究分布广泛的高地两栖动物伊斯特穆拉·贝利组的进化历史。结果表明，伊斯特穆拉·贝利组可能起源于上新世晚期的墨西哥东南部，后来通过跨墨西哥火山带扩散到西马德雷山脉。跨火山带的上新世前隆升可能通过成为穿越墨西哥中部的湿润陆桥促进了早期的多样化。这些发现强调了跨火山带在产生墨西哥丰富生物多样性方面的重要性。
