期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 55, 期 2, 页码 699-710出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2010.01.027
关键词
AMOVA; Biogeography; Diversification; Gene tree conflict; Islands; Pleistocene aggregate island diversification model; Sea-level fluctuations; Species trees
资金
- University of Kansas Natural History Museum and Biodiversity Center
- University of Kansas, Fulbright and Fulbright-Hayes Fellowships
- NSF [DEB 0804115, EF-0334952, DEB 0743491]
- Direct For Biological Sciences
- Division Of Environmental Biology [0804115] Funding Source: National Science Foundation
In the Philippines, Pleistocene sea level oscillations repeatedly connected and isolated neighboring islands. Hence, an understanding of the island platforms adjoined during periods of low sea level has led biologists to a suite of expectations that, taken together, represent a paradigm for the process of recent diversification in southeast Asia. We employ statistical tests of phylogenetic topology and population genetic analyses of widespread species of bent-toed geckos (Cyrtodactylus) to ascertain whether patterns of inter- and intra-specific diversity can be explained by a Pleistocene aggregate island model of diversification. Contrary to many classic studies of Philippine vertebrates, we find complex patterns that are only partially explained by past island connectivity. In particular, we determine that some populations inhabiting previously united island groups show substantial genetic divergence and are inferred to be polyphyletic. Additionally, greater genetic diversity is found within islands, than between them. Among the topological patterns inconsistent with the Pleistocene model, we note some similarities with other lineages, but no obviously shared causal mechanisms are apparent. Finally, we infer well-supported discordance between the gene trees inferred from mitochondrial and nuclear DNA sequences of two species, which we suspect is the result of incomplete lineage sorting. This study contributes to a nascent body of literature suggesting that the current paradigm for Philippine biogeography is an oversimplification requiring revision. Published by Elsevier Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据