Putting European lampreys into perspective: A global-scale multilocus phylogeny with a proposal for a generic structure of the Petromyzontidae

Pub Date : 2021-08-31 DOI:10.1111/jzs.12522
Ana M. Pereira, André Levy, Jasna Vukić, Radek Šanda, Boris A. Levin, Jörg Freyhof, Matthias Geiger, Lukáš Choleva, Sara M. Francisco, Joana I. Robalo
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引用次数: 8

Abstract

Previous studies on the phylogenetic relationships between lamprey species relied either on a low number of morphological characters related to the feeding apparatus, or on a low number of molecular mitochondrial DNA markers. Here, we apply a multilocus approach to assess the phylogenetic relationships of northern hemisphere lampreys, with a special emphasis on the 17 European species. The study comprises two mitochondrial (cytochrome c oxidase subunit 1 gene—DNA barcodes, and cytochrome b gene) and two nuclear (internal transcribed spacers I and II) markers to investigate species' phylogenetic affinities. The phylogeny obtained with mitochondrial markers revealed a clear and highly supported separation of all northern hemisphere lampreys. Among those, our multilocus results show several polyphyletic genera, stressing the need for a taxonomic revision in a near future. Lampetra morii (Berg, 1931) from East Asia, often included in Eudontomyzon, is placed in the genus Lethenteron. Lampetra richardsoni Vladykov & Follett, 1965 and Entosphenus hubbsi (Vladykov & Kott, 1976) should be placed in a new genus, as well as the southern populations of Lethenteron camtschaticum (Tilesius, 1811) and Lethenteron reissneri (Dybowski, 1869). Considering European species, our results argue for a taxonomic revision of Eudontomyzon, with emphasis on Eudontomyzon vladykovi Oliva & Zanandrea, 1959.

Abstract Image

透视欧洲七鳃鳗:全球尺度的多位点系统发育与岩鳃鳗科属结构的建议
以往关于七鳃鳗物种间系统发育关系的研究要么依赖于较少的与摄食器相关的形态学特征,要么依赖于较少的线粒体DNA分子标记。在这里,我们应用多位点方法来评估北半球七鳃鳗的系统发育关系,特别强调了17个欧洲物种。该研究包括两个线粒体(细胞色素c氧化酶亚基1基因- dna条形码和细胞色素b基因)和两个核(内部转录间隔物I和II)标记来研究物种的系统发育亲缘性。用线粒体标记获得的系统发育揭示了所有北半球七鳃鳗的清晰和高度支持的分离。其中,我们的多位点结果显示了几个多系属,强调在不久的将来需要进行分类修订。来自东亚的Lampetra morii (Berg, 1931),常被归入Eudontomyzon,被归入Lethenteron属。Lampetra richardsoni Vladykov &;Follett, 1965和Entosphenus hubbsi (Vladykov &Kott, 1976)以及南方的Lethenteron camtschaticum (Tilesius, 1811)和Lethenteron reissneri (Dybowski, 1869)应该被归入一个新属。考虑到欧洲物种,我们的结果主张对Eudontomyzon进行分类修订,重点是Eudontomyzon vladykovi Oliva &;Zanandrea, 1959年。
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