Gübitz T, Thorpe R S, Malhotra A
School of Biological Sciences, University of Wales, Bangor LL57 2UW, UK.
Mol Ecol. 2000 Sep;9(9):1213-21. doi: 10.1046/j.1365-294x.2000.00997.x.
Combining phylogeographic and matrix correspondence approaches in the analysis of geographical variation provides a fruitful approach to inferring the causes of molecular and morphological evolution within species. Here we present a study on the gecko Tarentola delalandii on the island of Tenerife, Canary Islands, which provides an outstanding model of an exceptionally high degree of phylogeographic differentiation in magnitude and pattern on a small spatial scale. We reconstruct the population history of T. delalandii using phylogeographic information, matrix correspondence tests and estimates of divergence times in conjunction with geological data. It appears that populations differentiated on three precursor islands and secondary contact followed the junction of these islands. The cytochrome b sequence appears to be evolving at least at approximately 1% per million years in this species. Matrix correspondence tests indicate that morphological character systems may reflect ecological selection regimes (colour pattern), history (body dimensions) or both (scalation). The results imply that natural selection can override a historical legacy, but also underline the potential relevance of molecular phylogenetic data for the interpretation of geographical variation in morphology.
在分析地理变异时结合系统发育地理学和矩阵对应方法，为推断物种内分子和形态进化的原因提供了一种富有成效的方法。在此，我们展示了一项关于加那利群岛特内里费岛的德氏睑虎（Tarentola delalandii）研究，该研究为小空间尺度上极高程度的系统发育地理分化的量级和模式提供了一个杰出模型。我们利用系统发育地理信息、矩阵对应检验以及结合地质数据的分歧时间估计来重建德氏睑虎的种群历史。似乎种群在三个前体岛屿上分化，随后在这些岛屿合并时发生了二次接触。在该物种中，细胞色素b序列似乎至少以每百万年约1%的速度进化。矩阵对应检验表明，形态特征系统可能反映生态选择机制（体色模式）、历史（身体尺寸）或两者（鳞片特征）。结果表明自然选择可以超越历史遗留因素，但也强调了分子系统发育数据在解释形态地理变异方面的潜在相关性。
