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学科主题: Multidisciplinary Sciences
题名: Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes
作者: GUO Xianguang ; ZHANG Yaoguang ; HE Shunping & CHEN Yiyu
通讯作者: He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: sisoridae ; glyptosternoids ; mitochondrial 16S rRNA gene ; phylogeny
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2004
卷: 49, 期:15, 页:1586-1595
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; SW China Normal Univ, Sch Life Sci, Chongqing 400715, Peoples R China
摘要: Partial sequences of mitochondrial 16S rRNA gene were obtained by PCR amplification for comparisons among nine species of glyptosternoid fishes and six species of non-glyptosternoids representing 10 sisorid genera. There are compositional biases in the A-rich impaired regions and G-rich paired regions. A-G transitions are primarily responsible for the Ts/Tv bias in impaired regions. The overall substitution rate in impaired regions is almost two times higher than that in the paired regions. Saturation plots at comparable levels of sequence divergence demonstrate no saturation effects. Phylogenetic analyses using both maximum likelihood and Bayesian methods support the monophyly of Sisoridae. Chinese sisorid catfishes are composed of two major lineages, one represented by (Gagata (Bagarius, Glyptothorax)) and the other by "glyptosternoids + Pseudecheneis". The glyptosternoids may not be a monophyletic group. A previous hypothesis referring to Pseudecheneis as the sister group of monophyletic glyptosternoids, based on morphological evidence, is not supported by the molecular data. Pseudecheneis is shown to be a sister taxon of Glaridoglanis. Pareuchiloglanis might be paraphyletic with Pseudexostoma and Euchiloglanis. Our results also support the hypothesis that Pareuchiloglanis anteanalis might be considered as the synonyms of Pareuchiloglanis sinensis, and genus Euchiloglanis might have only one valid species, Euchiloglanis davidi.
语种: 英语
WOS记录号: WOS:000224314400007
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9408
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
GUO Xianguang; ZHANG Yaoguang; HE Shunping & CHEN Yiyu.Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes,CHINESE SCIENCE BULLETIN,2004,49(15):1586-1595
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