Molecular phylogeny and historical biogeography of the cosmopolitan parasitic wasp subfamily Doryctinae (Hymenoptera: Braconidae)
Molecular phylogeny and historical biogeography of the cosmopolitan parasitic wasp subfamily Doryctinae (Hymenoptera: Braconidae)
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DOI：
10.1071/is07028
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发表时间：
2008-01-01
影响因子：
2.2
通讯作者：
Quicke, Donald L. J.
中科院分区：
文献类型：
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作者：
Zaldivar-Riveron, Alejandro;Belokobylskij, Sergey A.;Quicke, Donald L. J.
根据核28 SrRNA（r）DNA（类似于D2-3区的650 bp）和细胞色素c氧化酶I（COI）线粒体（mt）DNA（603 bp）的序列数据，研究了刺胸小蜂亚科64个属的系统发育关系。对所选分支的分子年代学和亚科的植物地理学也进行了推断。分区贝叶斯分析没有恢复一个单系Doryctinae，虽然所涉及的关系只有弱支持。强有力的证据被发现拒绝单系的Doryctes Haliday，1836年和Spathius Nees，1818年。我们的研究结果也支持确认Rhaconotini作为一个有效的部落。扩散vicariance分析显示了强大的地理信号的类群包括，分子测年估计的起源Doryctinae和随后的辐射都发生在古新世晚期始新世早期。分歧的时间估计表明，在亚科的多样化可能部分发生的结果，发生在南半球的大陆分裂事件，虽然最近的传播事件占目前分布的几个广泛的类群。
The phylogenetic relationships among representatives of 64 genera of the cosmopolitan parasitic wasps of the subfamily Doryctinae were investigated based on nuclear 28S ribosomal (r) DNA (similar to 650 bp of the D2-3 region) and cytochrome c oxidase I (COI) mitochondrial (mt) DNA (603 bp) sequence data. The molecular dating of selected clades and the biogeography of the subfamily were also inferred. The partitioned Bayesian analyses did not recover a monophyletic Doryctinae, though the relationships involved were only weakly supported. Strong evidence was found for rejecting the monophylies of both Doryctes Haliday, 1836 and Spathius Nees, 1818. Our results also support the recognition of the Rhaconotini as a valid tribe. A dispersal-vicariance analysis showed a strong geographical signal for the taxa included, with molecular dating estimates for the origin of Doryctinae and its subsequent radiation both occurring during the late Paleocene-early Eocene. The divergence time estimates suggest that diversification in the subfamily could have in part occurred as a result of continental break-up events that took place in the southern hemisphere, though more recent dispersal events account for the current distribution of several widespread taxa.