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Phylogenetic relationships of the Chinese sisorid catfishes: a nuclear intron versus mitochondrial gene approach
Guo, Xianguang; He, Shunping; Zhang, Yaoguang; He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2007-03-01
Source PublicationHYDROBIOLOGIA
ISSN0018-8158
Volume579Pages:55-68
AbstractSeveral recent molecular phylogenetic studies of the sisorid catfishes (Sisoridae) have challenged some aspects of their traditional taxonomy and cladistic hypotheses of their phylogeny. However, disagreement with respect to relationships within this family in these studies highlights the need for additional data and analyses. Here we subjected 15 taxa representing 12 sisorids genera to comprehensive phylogenetic analyses using the second intron of low-copy nuclear S7 ribosomal protein (rpS7) gene and the mitochondrial 16S rRNA gene segments both individually and in combination. The competing sisorid topologies were then tested by using the approximately unbiased (AU) test and the Shimodaira-Hasegawa (SH) test. Our results support previously suggested polyphyly of Pareuchiloglanis. The genus Pseudecheneis is likely to be nested in the glyptosternoids and Glaridoglanis might be basal to the tribe Glyptosternini. However, justified by AU and SH test, the sister-group relationship between Pseudecheneis and the monophyletic glyptosternoids cannot be rejected based on the second intron of rpS7 gene and combined data analyses. It follows that both gene segments are not suitable for resolving the phylogenetic relationships within the sisorid catfishes. Overall, the second intron of rpS7 gene yielded poor phylogenetic performance when compared to 16S rRNA gene, the evolutionary hypothesis of which virtually agreed with the combined data analyses tree. This phenomenon can be explained by the insufficient length and fast saturation of substitutions in the second intron of rpS7 gene, due to substitution patterns such as frequent indels (insertion/deletion events) of bases in the sequences during the evolution.; Several recent molecular phylogenetic studies of the sisorid catfishes (Sisoridae) have challenged some aspects of their traditional taxonomy and cladistic hypotheses of their phylogeny. However, disagreement with respect to relationships within this family in these studies highlights the need for additional data and analyses. Here we subjected 15 taxa representing 12 sisorids genera to comprehensive phylogenetic analyses using the second intron of low-copy nuclear S7 ribosomal protein (rpS7) gene and the mitochondrial 16S rRNA gene segments both individually and in combination. The competing sisorid topologies were then tested by using the approximately unbiased (AU) test and the Shimodaira-Hasegawa (SH) test. Our results support previously suggested polyphyly of Pareuchiloglanis. The genus Pseudecheneis is likely to be nested in the glyptosternoids and Glaridoglanis might be basal to the tribe Glyptosternini. However, justified by AU and SH test, the sister-group relationship between Pseudecheneis and the monophyletic glyptosternoids cannot be rejected based on the second intron of rpS7 gene and combined data analyses. It follows that both gene segments are not suitable for resolving the phylogenetic relationships within the sisorid catfishes. Overall, the second intron of rpS7 gene yielded poor phylogenetic performance when compared to 16S rRNA gene, the evolutionary hypothesis of which virtually agreed with the combined data analyses tree. This phenomenon can be explained by the insufficient length and fast saturation of substitutions in the second intron of rpS7 gene, due to substitution patterns such as frequent indels (insertion/deletion events) of bases in the sequences during the evolution.
SubtypeArticle
KeywordPhylogeny Sisoridae Glyptosternoids Intron S7 Ribosomal Protein Gene 16s Rrna
DepartmentChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; SW Univ, Sch Life Sci, Chongqing 400715, Peoples R China
Subject AreaMarine & Freshwater Biology
DOI10.1007/s10750-006-0369-8
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000244187200005
WOS KeywordRIBOSOMAL-PROTEIN GENE ; SEQUENCE VARIATIONS ; TREE SELECTION ; CYTOCHROME-B ; SUBSTITUTION ; CONFIDENCE ; INFERENCE ; FISHES ; MODEL ; S7
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8696
Collection期刊论文
Corresponding AuthorHe, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.SW Univ, Sch Life Sci, Chongqing 400715, Peoples R China
Recommended Citation
GB/T 7714
Guo, Xianguang,He, Shunping,Zhang, Yaoguang,et al. Phylogenetic relationships of the Chinese sisorid catfishes: a nuclear intron versus mitochondrial gene approach[J]. HYDROBIOLOGIA,2007,579:55-68.
APA Guo, Xianguang,He, Shunping,Zhang, Yaoguang,&He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2007).Phylogenetic relationships of the Chinese sisorid catfishes: a nuclear intron versus mitochondrial gene approach.HYDROBIOLOGIA,579,55-68.
MLA Guo, Xianguang,et al."Phylogenetic relationships of the Chinese sisorid catfishes: a nuclear intron versus mitochondrial gene approach".HYDROBIOLOGIA 579(2007):55-68.
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