| Phylogenetic analysis of Pectinidae(Bivalvia) based on the ribosomal DNA internal transcribed spacer region |
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| 作者姓名： | HUANG Xiaoting BI Ke HU Jingjie HU Xiaoli BAO Zhenmin |
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| 作者单位： | HUANG Xiaoting1，BI Ke1，HU Jingjie1，HU Xiaoli1，BAO Zhenmin1 1.Laboratory of Molecular Genetics and Breeding of Mollusk，College of Marine Life Science，Ocean University of China，Qingdao 266003，China |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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The National Nonprofit Special Grant of China
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国家重点科技研究发展项目
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教育部跨世纪优秀人才培养计划 |
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| 摘 要： | The ribosomal DNA internal transcribed spacer (ITS) region is a useful genomic region for understanding evolutionary and genetic relationships. In the current study, the molecular phylogenetic analysis of Pectinidae (Mollusca: Bivalvia) was performed using the nucleotide sequences of the nuclear ITS region in nine species of this family. The sequences were obtained from the scallop species Argopecten irradians, Mizuhopecten yessoensis, Amusium pleuronectes and Mimachlamys nobilis, and compared with the published sequences of Aequipecten opercularis, Chlamys farreri, C. distorta, M. varia, Pecten maximus, and an outgroup species Perna viridis. The molecular phylogenetic tree was constructed by the neighbor-joining and maximum parsimony methods. Phylogenetic analysis based on ITS1, ITS2, or their combination always yielded trees of similar topology. The results support the morphological classifications of bivalve and are nearly consistent with classification of two subfamilies (Chlamydinae and Pectininae) formulated by Waller. However, A. irradians, together with A. opercularis made up of genera Amusium, evidences that they may belong to the subfamily Pectinidae. The data are incompatible with the conclusion of Waller who placed them in Chlamydinae by morphological characteristics. These results provide new insights into the evolutionary relationships among scallop species and contribute to the improvement of existing classification systems.
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| 关 键 词： | 双壳类 核糖体DNA 系统发生论 基因转录 |
| 收稿时间： | 2006-09-14 |
| 修稿时间： | 2007-03-21 |
Phylogenetic analysis of Pectinidae(Bivalvia) based on the ribosomal DNA internal transcribed spacer region |
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| HUANG Xiaoting,BI Ke,HU Jingjie,HU Xiaoli,BAO Zhenmin.Phylogenetic analysis of Pectinidae(Bivalvia) based on the ribosomal DNA internal transcribed spacer region[J].Acta Oceanologica Sinica,2007,26(6):83-90. |
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| Authors: | HUANG Xiaoting BI Ke HU Jingjie HU Xiaoli and BAO Zhenmin |
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| Institution: | Laboratory of Molecular Genetics and Breeding of Mollusk, College of Marine Life Science, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The ribosomal DNA internal transcribed spacer (ITS) region is a useful genomic region for understanding evolutionary and genetic relationships. In the current study, the molecular phylogenetic analysis of Pectinidae (Mollusca: Bivalvia) was performed using the nucleotide sequences of the nuclear ITS region in nine species of this family. The sequences were obtained from the scallop species Argopecten irradians, Mizuhopecten yessoensis, Amusium pleuronectes and Mimachlamys nobilis, and compared with the published sequences of Aequipecten opercularis, Chlamys farreri, C. distorta, M. varia, Pecten maximus, and an outgroup species Perna viridis. The molecular phylogenetic tree was constructed by the neighbor-joining and maximum parsimony methods. Phylogenetic analysis based on ITS1, ITS2, or their combination always yielded trees of similar topology. The results support the morphological classifications of bivalve and are nearly consistent with classification of two subfamilies (Chlamydinae and Pectininae) formulated by Waller. However, A. irradians, together with A. opercularis made up of genera Amusium, evidences that they may belong to the subfamily Pectinidae. The data are incompatible with the conclusion of Waller who placed them in Chlamydinae by morphological characteristics. These results provide new insights into the evolutionary relationships among scallop species and contribute to the improvement of existing classification systems. |
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| Keywords: | bivalve Pectinidae ribosomal DNA ITS phylogeny |
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