Maritime midge radiations in the Pacific Ocean (Diptera: Chironomidae)

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY Systematic Entomology Pub Date : 2022-08-17 DOI:10.1111/syen.12565
Hongqu Tang, Qingqing Cheng, Matt N. Krosch, Peter S. Cranston
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Abstract

Maritime chironomid midges (Diptera) are diverse, yet these ‘pearls of the ocean’ are little known. Emphasizing Pacific Ocean taxa, we used six genetic markers (18S, 28S, CAD1, CAD4, FolCOI and COI) and fossil calibrations to produce Bayesian time-calibrated phylogenies to date eight independent marine transitions in three subfamilies. Deep nodes involve subfamily Telmatogetoninae (originating mid-Cretaceous, 101128, 114 Ma), with sister genera Telmatogeton Schiner and Thalassomya Schiner splitting later in the Cretaceous (56–82, 69 Ma). Two transitions in Orthocladiinae involve Clunio Haliday and Pseudosmittia Edwards, dating from the upper Cretaceous, both with Eocene crown groups. In subfamily Chironominae, transitions to marine occur in two tribes. Four transitions occur within the otherwise nonmarine crown groups Kiefferulus Goetghebuer, Dicrotendipes Kieffer, Polypedilum Kieffer and Ainuyusurika Sasa & Shirasaka. Two separate robust clades in tribe Tanytarsini involve: (1) a minor radiation within Paratanytarsus dated to the mid-Eocene around 43 Ma; and (2) an unexpected but fully supported diversification in Pontomyia Edwards plus Yaetanytarsus Sasa dated to around 47 Ma, with separation of Pontomyia from Yaetanytarsus around 40 Ma. Crown Pontomyia, represented by three species, was estimated to have diverged around 19 Ma, whereas the crown radiation of Yaetanytarsus, with 12 sampled species, dates to the mid-Eocene. In a comprehensive global review we concisely document new synonymies and new combinations revealed by the study. The evolutionary timing estimate provides insights into the frequency of marine transitions and diversifications in the Chironomidae in association with dynamic oceanic changes during the Oligocene and Miocene.

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太平洋海域蠓辐射(双翅目:蠓科)
海洋摇蚊种类繁多,但这些“海洋之珠”却鲜为人知。强调太平洋分类群,我们使用了六个遗传标记(18S、28S、CAD1、CAD4、FolCOI和COI)和化石校准来产生贝叶斯时间校准的系统发育,以确定三个亚科中八个独立的海洋转变的日期。深层节点涉及Telmatogetoninae亚科(起源于白垩纪中期,101–128,114 Ma),姐妹属Telmatogeton Schiner和Thalassomya Schiner在白垩纪后期分裂(56-82,69 马)。Orthocladiinae的两个转变涉及Clunio Haliday和Pseudosmittia Edwards,可追溯到上白垩纪,均具有始新世的冠群。在摇蚊亚科中,向海洋的过渡发生在两个部落中。在其他非海洋冠群Kieferrulus Goetghebuer、Dicrotendipes Kieffer、Polypedium Kieffer和Ainuyusurika Sasa&Shirasaka中发生了四个转变。Tanytarsini部落中两个独立的强大分支涉及:(1)Paratanytarsus内部的一个小辐射,可追溯到43年左右的始新世中期 马;和(2)Pontomyia Edwards和Yaetanytarsus Sasa的意外但完全支持的多元化可追溯到47年左右 马,40岁左右从亚坦跗关节分离出Pontomyia 马。Crown Pontomyia由三个物种代表,估计在19年左右分化 Ma,而Yaetanytarsus的冠辐射,有12个采样物种,可以追溯到始新世中期。在一篇全面的全球综述中,我们简要地记录了该研究揭示的新同义词和新组合。进化时间估计提供了对摇蚊科海洋转变和多样化频率的深入了解,以及渐新世和中新世期间海洋的动态变化。
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来源期刊
Systematic Entomology
Systematic Entomology 生物-进化生物学
CiteScore
10.50
自引率
8.30%
发文量
49
审稿时长
>12 weeks
期刊介绍: Systematic Entomology publishes original papers on insect systematics, phylogenetics and integrative taxonomy, with a preference for general interest papers of broad biological, evolutionary or zoogeographical relevance.
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