Phylogenetic relationships between Sophophora and Lordiphosa, with proposition of a hypothesis on the vicariant divergences of tropical lineages between the Old and New Worlds in the family Drosophilidae
Phylogenetic relationships between Sophophora and Lordiphosa, with proposition of a hypothesis on the vicariant divergences of tropical lineages between the Old and New Worlds in the family Drosophilidae
复制标题
槐果属和洛氏果属之间的系统发育关系，并提出了果蝇科新旧世界热带谱系替代分歧的假设
DOI：
10.1016/j.ympev.2011.04.012
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发表时间：
2011-07-01
影响因子：
4.1
通讯作者：
Tamura, Koichiro
中科院分区：
文献类型：
--
作者：
Gao, Jian-jun;Hu, Yao-guang;Tamura, Koichiro
尽管有许多关于Sophophora亚属的系统发育的研究，但其单系性尚未建立，特别是与其假定的亲缘属Lordiphosa的关系。我们利用两个线粒体基因（ND2和CO11）和两个核基因（Adh和28SrRNA）的DNA序列数据分析了它们的系统发育关系。在构建系统发育树时，我们考虑了不同分类群核苷酸组成异质性的问题，并采取了序列划分方法，以允许在不同进化过程中进化的核苷酸序列的多个替换模型，特别是开发了一种新的，序列划分程序的邻居连接（NJ）树的构建。通过不同的方法构建的树显示了几乎相同的和强烈支持的拓扑结构，其中Sophophora是并系的：Lordiphosa被放置为新热带Sophophora的姐妹，包括saltans和willistoni组，Sophophora被分为Lordiphosa +新热带Sophophora的分支和obscura + melanogaster组的分支。基于估计的时间，45.9万年，旧世界Lordiphosa和新热带区Sophophora之间的分歧和证据，从古生物学，古地理学和气候学，我们提出了一个假设，这vicariant分歧应该发生时，欧洲和北美之间的北大西洋陆桥打破了始新世中期。(C)2011 Elsevier Inc. All rights reserved.
Despite many studies on the phylogeny of the subgenus Sophophora, its monophyly has not been established, especially in relation to its putative relative, the genus Lordiphosa. We analyzed their phylogenetic relationships using DNA sequence data of two mitochondrial genes (ND2 and CO11)and two nuclear genes (Adh and 28SrRNA). In constructing phylogenetic trees, we accounted for the problem of among-taxa nucleotide compositional heterogeneity, and took a sequence-partitioning approach to allow multiple substitution models for nucleotide sequences that have evolved under different evolutionary processes, particularly developing a novel, sequence-partitioning procedure for Neighbor Joining (NJ) tree construction. Trees constructed by different methods showed an almost identical and strongly supported topology in which Sophophora was paraphyletic: Lordiphosa was placed as the sister to the Neotropical Sophophora consisting of the saltans and willistoni groups, and Sophophora was divided into the clade of Lordiphosa + Neotropical Sophophora and the clade of the obscura + melanogaster groups. Based on the estimated time, 45.9 Mya, of divergence between the Old World Lordiphosa and the Neotropical Sophophora and evidence from paleontology, paleo-geography and -climatology, we propose a hypothesis that this vicariant divergence should have occurred when the North Atlantic Land Bridge between Europe and North America broke in the middle Eocene Epoch. (C) 2011 Elsevier Inc. All rights reserved.