浪子回头:一种新的南极水蛭(水蛭目:水蛭科)的形态和分子系统发育关系暗示了两极生物地理格局

IF 1.8 3区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Systematics and Biodiversity Pub Date : 2023-09-11 DOI:10.1080/14772000.2023.2246476

Andriy Utevsky, Serge Utevsky, Joanna M. Cichocka, Aleksander Bielecki, Mario Santoro, Peter Trontelj

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引用次数: 0

摘要

长期以来，水蛭科(Piscicolidae)的双极性分布一直是水蛭生物学家关注和讨论的问题。所有在两个半球的寒冷和温带水域中出现而在热带地区不存在的相关分类群的假定双极性范围的情况都是基于形态学的假设。在这里，我们提出，这是第一次，双极分布的实例，由形态学和分子数据证实。后者包括线粒体基因12S rRNA、COI、ND1和tRNA Leu，以及核28S rRNA。报道了南极鱼科动物Austroplatybdellina prodiga新属新种。这种新水蛭是北-北极单系水蛭的一部分，被非正式地称为“经典水蛭”。该支系是非单系鸭蛋亚科的核心。Austroplatybdellina prodiga gen. 11 . sp. 11 .与Crangonobdella和Beringobdella这两个北方属一起被进一步归类为一个单系类群的成员，这两个属与其新描述的亲戚具有许多系统重要的形态学特征。据推测，这种新水蛭的北方祖先穿越了温暖的热带水域，并在南极定居。由于浪子a和它的北方姐妹种之间的遗传距离较低，这一定植相对较近。这种迁徙可以看作是鱼尾科南极祖先的北方后裔回到整个家族的起源地区，这是在家族系统发育树中南极Megaliobdella szidati的基础位置之后。这种进化场景反映在新水蛭的物种名称中。https://zoobank.org/urn:lsid:zoobank.org:pub:DA548F19-922A-4B5D-B7F1-4C3AF57B9824https://zoobank.org/urn:lsid:zoobank.org:act:A35C365A-A475-4F3E-B28B-C799F618215Dhttps://zoobank.org/urn:lsid:zoobank.org:act:BCE6411F-E38A-4A99-A726-DE5C33D9D658

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Return of the prodigal son: morphology and molecular phylogenetic relationships of a new Antarctic fish leech (Hirudinea: Piscicolidae) imply a bipolar biogeographic pattern

The bipolar distribution of fish leeches (Piscicolidae) has been considered and discussed by leech biologists for a long time. All cases of putative bipolar ranges of related taxa that occur in cold and temperate waters of both hemispheres and are absent in the tropics have been morphology-based hypotheses. Here, we present, for the first time, an instance of bipolar distribution substantiated by morphological and molecular data. The latter include the mitochondrial genes 12S rRNA, COI, ND1 and tRNA Leu, and the nuclear 28S rRNA. A new genus and species of Antarctic piscicolids, Austroplatybdellina prodiga, is described. The new leech was part of a Boreal-Arctic monophyletic group that is informally called ‘classic platybdellins’. That clade is the core of the non-monophyletic subfamily Platybdellinae. Austroplatybdellina prodiga gen. nov. sp. nov. was further classified as a member of a monophyletic group along with two Boreal genera, Crangonobdella and Beringobdella, which share a number of systematically important morphological features with its newly described relative. It is hypothesized that the Boreal ancestor of the new leech crossed warm tropical waters and colonized the Antarctic. The colonization was relatively recent as the low genetic distance between A. prodiga and its Boreal sister species suggests. This migration can be viewed as a return of a Boreal descendant of the Antarctic ancestor of Piscicolidae to the area of origin of the entire family, which follows from the basal position of the Antarctic Megaliobdella szidati in the family phylogenetic tree. This evolutionary scenario is reflected in the species epithet of the new leech.https://zoobank.org/urn:lsid:zoobank.org:pub:DA548F19-922A-4B5D-B7F1-4C3AF57B9824https://zoobank.org/urn:lsid:zoobank.org:act:A35C365A-A475-4F3E-B28B-C799F618215Dhttps://zoobank.org/urn:lsid:zoobank.org:act:BCE6411F-E38A-4A99-A726-DE5C33D9D658

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来源期刊

Systematics and Biodiversity 环境科学-生物多样性保护

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

>24 weeks

期刊介绍： Systematics and Biodiversity is devoted to whole-organism biology. It is a quarterly, international, peer-reviewed, life science journal, without page charges, which is published by Taylor & Francis for The Natural History Museum, London. The criterion for publication is scientific merit. Systematics and Biodiversity documents the diversity of organisms in all natural phyla, through taxonomic papers that have a broad context (not single species descriptions), while also addressing topical issues relating to biological collections, and the principles of systematics. It particularly emphasises the importance and multi-disciplinary significance of systematics, with contributions which address the implications of other fields for systematics, or which advance our understanding of other fields through taxonomic knowledge, especially in relation to the nature, origins, and conservation of biodiversity, at all taxonomic levels. The journal does not publish single species descriptions, monographs or applied research nor alpha species descriptions. Taxonomic manuscripts must include modern methods such as cladistics or phylogenetic analysis.