Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes

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	Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes
	Guo, XG ; Zhang, YG ; He, SP ; Chen, YY
刊名	CHINESE SCIENCE BULLETIN
	2004-08-01
卷号	49 期号:15 页码:1586-1595
关键词	sisoridae glyptosternoids mitochondrial 16S rRNA gene phylogeny
ISSN号	1001-6538
通讯作者	He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	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.
英文摘要	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.
学科主题	Multidisciplinary Sciences
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	CYTOCHROME-B GENE ; NUCLEOTIDE SUBSTITUTION ; FISHES ; DNA ; INFERENCE ; SILURIFORMES ; EVOLUTION ; PATTERN ; LIMITS ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000224314400007
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9408]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.SW China Normal Univ, Sch Life Sci, Chongqing 400715, Peoples R China
推荐引用方式 GB/T 7714	Guo, XG,Zhang, YG,He, SP,et al. Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes[J]. CHINESE SCIENCE BULLETIN,2004,49(15):1586-1595.
APA	Guo, XG,Zhang, YG,He, SP,&Chen, YY.(2004).Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes.CHINESE SCIENCE BULLETIN,49(15),1586-1595.
MLA	Guo, XG,et al."Mitochondrial 16S rRNA sequence variations and phylogeny of the Chinese sisorid catfishes".CHINESE SCIENCE BULLETIN 49.15(2004):1586-1595.