Molecular data sheds light on the classification of long-legged flies (Diptera : Dolichopodidae)
Molecular data sheds light on the classification of long-legged flies (Diptera : Dolichopodidae)
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DOI：
10.1071/is11029
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发表时间：
2011-01-01
影响因子：
2.2
通讯作者：
Bernasconi, Marco Valerio
中科院分区：
文献类型：
--
作者：
Germann, Christoph;Pollet, Marc;Bernasconi, Marco Valerio
Dolichopodidae（长腿苍蝇）是世界上第四大双翅目家庭，但基于广泛的全球分类样本的系统发育仍然缺乏。我们在这里提出了第一个分子系统发育假说的Dolichopodidae，基于157种的68属和15亚科从旧的和新的世界，和七empidoid种（Empididae，Hybotidae）作为外群。使用相对快速进化的线粒体标记（COI，12S，16S）和更保守的核标记（18S），后者被广泛用于在更高的分类水平上研究染色体发生。我们提出了强有力的证据Microphorinae的姐妹组Dolichopodidae狭义，和单系Parathalassiinae的Dolichopodidae狭义的一部分。支持Achalcinae、Dolichopodinae和Sciapodinae的单系性，Stolidosomatinae被置于Symphycninae内。Diaphorinae、Mederinae、Neurigoninae、Rhaphiinae和Symphycninae为并系群，Hydrophorinae和Peloropeodinae为复系群。我们广泛的分类样本使我们能够获得新的见解复杂的系统学Dolichopodidae。我们的研究结果突出了几个问题与传统的分类，这有相当大的后果，一些类群的系统地位。在深分歧观察到的分辨率差支持以前的假设，建议快速早期辐射Dolichopodidae。
Dolichopodidae (long-legged flies) is the world's fourth largest dipteran family, but a phylogeny based on a broad global taxon sample is still lacking. We present here a first molecular phylogenetic hypothesis for Dolichopodidae, based on 157 dolichopodid species in 68 genera and 15 subfamilies from the Old and New World, and seven empidoid species (Empididae, Hybotidae) as outgroups. Both relatively fast-evolving mitochondrial markers (COI, 12S, 16S) and a more conserved nuclear marker (18S) were used, the latter being widely employed to study the phylogeny at higher taxonomic levels. We present strong evidence for Microphorinae as sister group to Dolichopodidae sensu stricto, and for the monophyletic Parathalassiinae as part of Dolichopodidae sensu stricto. Monophyly of Achalcinae, Dolichopodinae, and Sciapodinae is supported and Stolidosomatinae are placed within Sympycninae. Diaphorinae, Medeterinae, Neurigoninae, Rhaphiinae, and Sympycninae are paraphyletic, and Hydrophorinae and Peloropeodinae polyphyletic. Our broad taxon sample allows us to gain new insights into the complex systematics of Dolichopodidae. Our results highlight several problems with the traditional classification, which have considerable consequences for the systematic status of some taxa. The poor resolution observed in deep divergences supports previous hypotheses suggesting a rapid early radiation of Dolichopodidae.