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首页> 美国卫生研究院文献>Meta Gene >Southeast Asian mouth-brooding Betta fighting fish (Teleostei: Perciformes) species and their phylogenetic relationships based on mitochondrial COI and nuclear ITS1 DNA sequences and analyses
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Southeast Asian mouth-brooding Betta fighting fish (Teleostei: Perciformes) species and their phylogenetic relationships based on mitochondrial COI and nuclear ITS1 DNA sequences and analyses

机译：基于线粒体COI和核ITS1 DNA序列并进行分析的东南亚令人垂涎的斗鱼（Teleostei：Perciformes）种类及其系统发育关系

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摘要

Fighting fish species in the genus Betta are found in several Southeast Asian countries. Depending on the mode of paternal care for fertilized eggs and hatchlings, various species of the betta fish are classified as mouth brooders or nest builders whose members in turn have been grouped according to their similarities mainly in morphology.The mouth brooders as well as some nest builders involved in the present study include fishes discovered and identified subsequent to previous reports on species groupings and their positions on phylogenetic trees based on DNA sequences that differ from those used by us in this study. From the mitochondrial COI gene and nuclear ITS1 gene sequences and more accurate analyses we conclude that the following members of the mouth-brooding pairs, named differently previously, are virtually identical, viz the Betta prima–Betta pallida pair and Betta ferox–Betta apollon pair. The Betta simplex, hitherto believed to be one species, could possibly be genetically split into 2 distinct species.In addition, several other established type-locality fishes could harbor cryptic species as judged by genetic differences. Assignments of fish species to groups reported earlier may have to be altered somewhat by the present genetic findings. We propose here a new Betta fish phylogenetic tree which, albeit being similar to the previous ones, is clearly different from them. Our gene-based evidence also leads to assignments of some fishes to new species groups and alters the positions of some species on the new phylogenetic tree, thus implying different ancestral relationships.
机译：在一些东南亚国家/地区发现了斗鱼属中的斗鱼物种。根据受精卵和幼体的父亲照顾方式，将各种种类的斗鱼分为口育雏者或筑巢造物者，其成员主要根据形态相似性进行分组。本研究中涉及的构建者包括先前关于物种分组及其在系统树上的位置的报告的发现和鉴定的鱼类，这些DNA基于不同于我们在本研究中使用的DNA序列。通过线粒体COI基因和ITS1核基因序列，以及更精确的分析，我们得出结论，先前以不同的方式命名的以下口育对成员实际上是相同的，即Betta prima-Betta pallida对和Betta ferox-Betta apollon对。迄今被认为是单一物种的Betta simplex可能通过遗传方式分为2个不同的物种。此外，根据遗传差异判断，其他几种确定类型的地方性鱼类也可能带有隐性物种。根据目前的遗传发现，可能必须对先前报告的鱼类种类的分配进行一些改变。我们在这里提出了一种新的Betta鱼系统发育树，尽管它与以前的相似，但显然与它们不同。我们基于基因的证据还导致将某些鱼类分配给新物种组，并改变了某些物种在新系统树上的位置，从而暗示了不同的祖先关系。

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