Phylogenetic analysis of the family Drosophilidae, focused from the genus Lordiphosa

以果蝇属为重点的果蝇科系统发育分析

• 批准号: 08640876
• 负责人: TODA Masanori
• 金额: $ 1.41万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640876/
• 关键词: Drosophilinae; Lordiphosa; phylogeny; cladistic analysis; morphology; monophyly

Phylogenetic relationships of the genus Lordiphosa and some major taxa in the subfamily Drosophilinae were analyzed in this study. A total of 41 drosophilid species, including four species of the subfamily Steganinae as an outgroup and 18 species of five Lordiphosa species-groups, were selected, and 66 adult morphological characters were extracted for the analyzes. The data matrix was subjected to a cladistic analysis by phylogenetic Analysis Using Parsimony (PAUP 3.1.1) computer program. The confidential value for each clade of the maximum parsimony tree was given by a bootstrap analysis.Based upon a consensus tree from three most parsimonious trees and the bootstrap values, the following conclusions were deduced. 1) Lordiphosa is polyphyletic. 2) The Lo.tenuicauda species-group, which itself is paraphyletic, makes a monophyletic group together with the genus Nesiodrosophila. 3) The remaining Lordiphosa species make themselves another monophyletic group as the sister group to the subgenus Sophophora. 4) Within Lordiphosa except the tenuicauda group, the fenestrarum and the denticeps groups are each monophyletic, the nigricolor group is to be divided into two monophyletic groups, but the monophyly of the miki group is not strongly supported by the bootstrap value. 5) The genus Hirtodrosophila and Scaptomyza are each monophyletic. 6) Within the Drosophilinae, the genus Scaptodrosophila is regarded as having first splitted from the main lineage. However, the subsequent branching order of other clades, Lordiphosa+Sophophora, Chymomyza, Dorsilopha, Hirtodrosophila, Scaptomyza, Nesiodrosophila+Lo.tenuicauda species-group, and Drosophila, remains unsolved.

在这项研究中，分析了果蝇亚家族中的lordiphosa属和一些主要类群的系统发育关系。总共选择了41种果蝇物种，其中包括四种亚家族史甘那（Steganinae）作为外部群体，并选择了18种五个Lordiphosa物种群，并提取了66种成人形态特征进行分析。通过使用Parsimony（PAUP 3.1.1）计算机程序进行系统发育分析，对数据矩阵进行了覆盖分析。 Bootstrap分析给出了最大简约树的每个进化枝的机密价值。基于从三个最简约的树和Bootstrap值的共识树上，得出以下结论。 1）Lordiphosa是多形的。 2）本身就是少量的tenuicauda物种群，将单系组与nesiodrosophila属一起组成。 3）剩下的lordiphosa物种使自己成为了一个单属群体，成为了大约属亚属的姊妹群体。 4）除了Tenuicauda群体外，fenestrum和Denticeps群体都是单一的，nigricolor组应分为两个单属群体，但是Miki组的单属群体并未由自举值支持。 5）hirtodrosophila属和scaptomyza都是单一的。 6）在果蝇中，Scaptodolosophila属被认为是首先是从主谱系中分裂的。然而，其他进化枝的分支顺序，Lordiphosa+Sphymomyza，Chammomyza，Rorsilepha，Hirtodrosophila，Scaptomyza，Nesiodrosophila+Lo.tenuicauda物种群和果蝇，果蝇均保持尚未解决。