Phylogenetic Patterns of Geographical and Ecological Diversification in the Subgenus Drosophila
Phylogenetic Patterns of Geographical and Ecological Diversification in the Subgenus Drosophila
复制标题
果蝇亚属地理和生态多样化的系统发育模式
作者：
R. Morales‐Hojas;J. Vieira
新的地理区域和/或新的生态资源的殖民化可以导致物种迅速多样化，进入新的生态位。果蝇亚属的成员分布在地球仪上，并显示出巨大的生态位多样性。此外，果蝇的分类学分类包括等级辐射，这是指密切相关的物种群。然而，这些分类辐射是否与进化辐射相对应，从未得到过检验。在这里，我们提出了一个研究的模式，果蝇的多样化测试增加多样化率的地理和生态多样化的过程。为此，我们已经估计和日期的218种属于亚属的主要种组的系统发育。所获得的古生物群与以往的研究结果基本一致，表明主要类群出现在渐新世/中新世过渡期或中新世早期，其特征是气候变暖的趋势和短暂的冰川作用。祖先重建的地理范围和生态资源的使用建议至少有两个分散到新热带地区的祖先亚洲热带distribution，和几个过渡到专门的生态资源的使用（mycophagous和cactophilic）。新的地理区域和/或新的生态资源的殖民化可以导致物种迅速多样化，进入新的生态位。然而，多样性分析表明，没有显着的支持适应性辐射的地理扩散或生态资源转移的结果。此外，cactophily并没有导致repleta和相关群体的多样化率增加。因此，分类辐射不对应于适应辐射。
Colonisation of new geographic regions and/or of new ecological resources can result in rapid species diversification into the new ecological niches available. Members of the subgenus Drosophila are distributed across the globe and show a large diversity of ecological niches. Furthermore, taxonomic classification of Drosophila includes the rank radiation, which refers to closely related species groups. Nevertheless, it has never been tested if these taxonomic radiations correspond to evolutionary radiations. Here we present a study of the patterns of diversification of Drosophila to test for increased diversification rates in relation to the geographic and ecological diversification processes. For this, we have estimated and dated a phylogeny of 218 species belonging to the major species groups of the subgenus. The obtained phylogenies are largely consistent with previous studies and indicate that the major groups appeared during the Oligocene/Miocene transition or early Miocene, characterized by a trend of climate warming with brief periods of glaciation. Ancestral reconstruction of geographic ranges and ecological resource use suggest at least two dispersals to the Neotropics from the ancestral Asiatic tropical disribution, and several transitions to specialized ecological resource use (mycophagous and cactophilic). Colonisation of new geographic regions and/or of new ecological resources can result in rapid species diversification into the new ecological niches available. However, diversification analyses show no significant support for adaptive radiations as a result of geographic dispersal or ecological resource shift. Also, cactophily has not resulted in an increase in the diversification rate of the repleta and related groups. It is thus concluded that the taxonomic radiations do not correspond to adaptive radiations.
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影响因子：
10.7
作者：
C. Russo;N. Takezaki;M. Nei
通讯作者：
C. Russo;N. Takezaki;M. Nei
影响因子：
4.1
作者：
A. Tatarenkov;M. Žurovcová;F. Ayala
通讯作者：
A. Tatarenkov;M. Žurovcová;F. Ayala
果蝇virilis-repleta辐射物种组之间的系统发育关系。
DOI：
10.1006/mpev.2001.1002
发表时间：
2001
期刊：
Molecular phylogenetics and evolution.
影响因子：
--
作者：
Tatarenkov,A;Ayala,FJ
通讯作者：
Ayala,FJ
影响因子：
6.5
作者：
Drummond, Christopher S.;Eastwood, Ruth J.;Hughes, Colin E.
通讯作者：
Hughes, Colin E.