Molecular phylogeny and biogeography of the weevil subfamily Platypodinae reveals evolutionarily conserved range patterns
Molecular phylogeny and biogeography of the weevil subfamily Platypodinae reveals evolutionarily conserved range patterns
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DOI：
10.1016/j.ympev.2015.05.028
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发表时间：
2015-11-01
影响因子：
4.1
通讯作者：
Jordal, Bjarte H.
中科院分区：
文献类型：
--
作者：
Jordal, Bjarte H.
扁足象鼻虫是一种特殊的象鼻虫亚科，在枯木中挖掘的隧道中培养真菌。它们的地理分布一般是有限的，属局限于一个大陆或大岛，这为植物地理研究提供了一个有用的系统。这项研究建立了该群体的第一个详细的分子遗传学，目的是测试分类，多样化和地理学的假设。基于来自COI、EF-1 α、CAD、ArgK和28 S的3648个核苷酸重建了一个同源性。树的拓扑结构得到了很好的解决，并表示与地理的强相关性，比以前的基于形态学的分类预测。Tesserocerini是并系的，Notoplatypus是一个分支的姐妹群，该分支由Tesserocerini的三个主要谱系和最近进化的Platypodini组成。南鸭嘴兽是所有现存的鸭嘴兽的姐妹群，因此确认了它与鸭嘴兽的独立地位。印度-澳大利亚属的Platypodini是惊人的并系，这表明该部落的分类需要仔细修订。拉格朗日和S-DIVA中的对流区重建对于年龄大约大于80 Ma的节点是不明确的。更近的事件得到了可靠的评估，涉及冈瓦纳后的长距离扩散。新热带地区被殖民了三次，都来自非洲热带地区，最近的一次不到25 Ma，包括所有新热带地区的祖先。(C)2015 Elsevier Inc. All rights reserved.
Platypodinae is a peculiar weevil subfamily of species that cultivate fungi in tunnels excavated in dead wood. Their geographical distribution is generally restricted, with genera confined to a single continent or large island, which provides a useful system for biogeographical research. This study establishes the first detailed molecular phylogeny of the group, with the aim of testing hypotheses on classification, diversification, and biogeography. A phylogeny was reconstructed based on 3648 nucleotides from COI, EF-1 alpha, CAD, ArgK, and 28S. Tree topology was well resolved and indicated a strong correlation with geography, more so than predicted by previous morphology-based classifications. Tesserocerini was paraphyletic, with Notoplatypus as the sister group to a clade consisting of three main lineages of Tesserocerini and the recently evolved Platypodini. Austroplatypus formed the sister group to all remaining Platypodini and hence confirmed its separate status from Platypus. The Indo-Australian genera of Platypodini were strikingly paraphyletic, suggesting that the taxonomy of this tribe needs careful revision. Ancestral-area reconstructions in Lagrange and S-DIVA were ambiguous for nodes roughly older than 80 Ma. More recent events were firmly assessed and involved post-Gondwanan long-distance dispersal. The Neotropics was colonized three times, all from the Afrotropical region, with the latest event less than 25 Ma that included the ancestor of all Neotropical Platypodini. (C) 2015 Elsevier Inc. All rights reserved.