沙鳅科鱼类起源演化研究
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1.淡水鱼类资源与生殖发育教育部重点实验室;2.长江上游鱼类资源保护与利用四川省重点实验室

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国家自然科学基金


Origin and evolution of botiid loaches (Teleostei: Cypriniformes: Botiidae)
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1.Key Laboratory of Freshwater Fish Reproduction and Development,Ministry of Education,School of Life Sciences,Southwest University;2.Key Laboratory of Sichuan Province for Fish Conservation and Utilization in the Upper Reaches of the Yangtze River,College of Life Sciences,Neijiang Normal University

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    摘要:

    沙鳅科(Botiidae)是辐鳍鱼纲(Actinopterygii)鲤形目(Cypriniformes)鳅超科(Cobitoidea)的一类中小型鱼类,广泛分布于东南亚、东亚和南亚地区。本研究为厘清沙鳅科鱼类的系统发育关系和起源演化,通过PCR扩增和公共数据库的下载,共获得240条序列,涵盖了8属20种沙鳅科鱼类,采用2个线粒体基因(COI,Cytb)和3个核基因(IRBP,RAG1,RH)联合的方法,进行了系统发育树重建、分化时间和生物地理学分析。基于不同数据集构建的最大似然树(Maximum Likelihood, ML)和贝叶斯树(Bayesian inference, BI)的拓扑结构一致显示,沙鳅科鱼类及各属均为单系类群,沙鳅科分为沙鳅亚科(Botiinae)和薄鳅亚科(Leptobotiinae)两大支,其中,沙鳅亚科包括华鳅属(Sinibotia)、安巴鳅属(Ambastaia)、安彦鳅属(Yasuhikotakia)、缨须鳅属(Syncrossus)、沙鳅属(Botia)和色鳅属(Chromobatia),薄鳅亚科包括副沙鳅属(Parabotia)和薄鳅属(Leptobotia),且基于不同数据集构建的ML和BI树都有较高的支持度。分歧时间和地理祖先重建结果表明,沙鳅科鱼类在早渐新世(约28.85 百万年前)起源于东南亚地区,中新世各属开始分化,晚中新世和上新世属内种的分化明显;随着喜马拉雅山脉的运动,沙鳅科鱼类从东南亚地区向西和向北扩散和演化,其中,沙鳅属向西进入南亚地区,薄鳅属、副沙鳅属和华鳅属向北进入我国长江、珠江流域,这说明沙鳅科鱼类的物种分化和喜马拉雅山脉的运动有着密切的关系。

    Abstract:

    Botiidae (Actinopterygii: Cypriniformes) is a group of small and medium-sized fishes with 8 genera and 62 species, which is widely distributed in Southeast Asia, East Asia and South Asia. To clarify the phylogenetic relationships and the origin evolution of the family Botiidae, 240 sequences were obtained by PCR amplification and downloading from GenBank, covering 8 genera and 20 species of Botiidae. In this study, phylogenetic tree reconstruction, divergence time estimation and biogeographic analysis were performed using the combination of 2 mitochondrial genes (COI, Cytb) and 3 nuclear genes (IRBP, RAG1, RH). The topology of Maximum Likehood (ML) and Bayesian inference (BI) trees based on different datasets consistently showed that the family Botiidae was a monophyletic taxa and all genera were also monophyletic taxa. The family Botiidae was divided into two major brances of the subfamily Botiinae and Leptobotiinae, of which Botiinae included Sinibotia, Ambastaia, Yasuhikotakia, Syncrossus, Botia and Chromobotia and Leptobotiinae included Parabotia and Leptobotia, and the above results were well supported. The results of divergence time and geographic ancestral reconstruction indicated that the family Botiidae originated in Southeast Asia in the Early Oligocene (about 28.85 million years ago), and the genera began to diverge in the Miocene, with obvious divergence of species within genera in the Late Miocene and Pliocene. With with the movement of the Himalayas, the family Botiidae spread and evolved westward and northward from Southeast Asia, among which the genus Botia entered the South Asian region westward, and the genera of Leptobotia, Parabotia, and Sinibotia entered the Yangtze River and Pearl River basin in China to the north. The differentiation of the family Botiidae is closely related to the movement of the Himalayas.

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徐荣荣,刘世英,王永明,李燕平,谢碧文,彭作刚.沙鳅科鱼类起源演化研究[J].水产学报,2025,49(2):

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  • 收稿日期:2022-06-02
  • 最后修改日期:2022-11-21
  • 录用日期:2023-01-10
  • 在线发布日期: 2025-02-19
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