Phylogenetic relationships of the Chinese sisorid catfishes: a nuclear intron versus mitochondrial gene approach
文献类型：期刊论文
| 作者 | Guo, Xianguang; He, Shunping; Zhang, Yaoguang |
| 刊名 | HYDROBIOLOGIA
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 579页码:55-68 |
| 关键词 | phylogeny Sisoridae glyptosternoids intron S7 ribosomal protein gene 16S rRNA |
| ISSN号 | 0018-8158 |
| 通讯作者 | He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Marine & Freshwater Biology |
| 类目[WOS] | Marine & Freshwater Biology |
| 研究领域[WOS] | Marine & Freshwater Biology |
| 关键词[WOS] | RIBOSOMAL-PROTEIN GENE ; SEQUENCE VARIATIONS ; TREE SELECTION ; CYTOCHROME-B ; SUBSTITUTION ; CONFIDENCE ; INFERENCE ; FISHES ; MODEL ; S7 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244187200005 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8696]  |
| 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 Univ, Sch Life Sci, Chongqing 400715, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Xianguang,He, Shunping,Zhang, Yaoguang. 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.(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. |
入库方式： OAI收割
来源：水生生物研究所
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