The Affiliated School of National Tainan First Senior High School, Tainan 701, Taiwan.
Mol Phylogenet Evol. 2012 Jan;62(1):251-62. doi: 10.1016/j.ympev.2011.09.022. Epub 2011 Oct 14.
Taiwan presents an excellent opportunity to build a phylogeographic paradigm for fine-scaled differentiation occurring within short distances on an single island. Due to the limitation of habitat availability on the island, demographic histories of species in Taiwan were strongly influenced by glacial-interglacial cycles. Nevertheless, there are relatively few studies demonstrating such phylogeographic patterns for islands, especially in subtropical Asia. In this study, we aim to construct the genetic landscape of a philopatric stream frog Buergeria robusta by an intense and fine-scaled collection throughout the island. The deduced genetic landscape of B. robusta presented extremely high congruence with the actual topography of Taiwan. Two major lineages were found on the eastern and the western sides of Taiwan with a non-overlapping distribution, indicating the importance of the Central Mountain Range as the major biogeographic barrier. Both clades showed a strong and congruent tendency of demographic or distributional expansion in recent history based on different analyses. Population expansion of such a subtropical lowland species might be a result from a release of available habitat in post-glacial periods.
台湾为在单个岛屿的短距离内发生的精细尺度分化建立系统地理学范例提供了极好的机会。由于岛屿上栖息地的可用性有限，台湾物种的种群历史受到冰期-间冰期循环的强烈影响。然而，很少有研究表明岛屿，特别是亚热带亚洲的岛屿存在这种系统地理学模式。在这项研究中，我们旨在通过在整个岛屿上进行密集而精细的采集，构建恋地性溪流蛙粗壮溪蟾的遗传景观。粗壮溪蟾的推断遗传景观与台湾的实际地形极为吻合。在台湾的东西两侧发现了两个主要谱系，它们的分布没有重叠，这表明中央山脉作为主要的生物地理屏障的重要性。基于不同的分析，两个分支都表现出强烈的、一致的近期种群扩张或分布扩张趋势。这种亚热带低地物种的种群扩张可能是冰期后可用栖息地释放的结果。
