| Phylogeny of the cuttlefishes (Mollusca: Cephalopoda) based on mitochondrial COI and 16S rRNA gene sequence data |
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| 作者姓名： | LIN Xiangzhi ZHENG Xiaodong XIAO Shu WANG Rucai |
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| 作者单位： | [1]MaricultureResearchLaboratory,FisheryCollege,OceanUniversityofChina,Qingdao266003,China／／GraduateSchooloftheChineseAcademyofSciences,Beijing100039,China [2]MaricultureResearchLaboratory,FisheryCollege,OceanUniversityofChina,Qingdao266003,China |
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| 摘 要： | To clarify cuttlefish phylogeny, mitochondrial cytochrome c oxidase subunit I (COI) gene and partial 16S rRNA gene are sequenced for 13 cephalopod species. Phylogenetic trees are constructed, with the neighbor-joining method. Coleoids are divided into two main lineages, Decabrachia and Octobrachia. The monophyly of the order Sepioidea, which includes the families Sepiidae, Sepiolidae and Idiosepiidae, is not supported. From the two families of Sepioidea examined, the Sepiolidae are polyphyletic and are excluded from the order. On the basis of 16S rRNA and amino acid of COI gene sequences data, the two genera (Sepiella and Sepia) from the Sepiidae can be distinguished, but do not have a visible boundary using COI gene sequences. The reason is explained. This suggests that the 16S rDNA of cephalopods is a precious tool to analyze taxonomic relationships at the genus level, and COI gene is fitter at a higher taxonomic level (i.e., family).
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| 关 键 词： | 进化史 乌贼 线粒体 细胞色素 氧化酶 COI基因 16S rRNA |
| 收稿时间： | 2004/1/11 0:00:00 |
| 修稿时间： | 2004/8/20 0:00:00 |
Phylogeny of the cuttlefishes (Mollusca: Cephalopoda) based on mitochondrial COI and 16S rRNA gene sequence data |
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| LIN Xiangzhi,ZHENG Xiaodong,XIAO Shu,WANG Rucai.Phylogeny of the cuttlefishes (Mollusca: Cephalopoda) based on mitochondrial COI and 16S rRNA gene sequence data[J].Acta Oceanologica Sinica,2004,23(4):699-707. |
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| Authors: | LIN Xiangzhi ZHENG Xiaodong XIAO Shu and WANG Rucai |
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| Institution: | 1.Mariculture Research Laboratory, Fishery College, Ocean University of China, Qingdao 266003, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China2.Mariculture Research Laboratory, Fishery College, Ocean University of China, Qingdao 266003, China |
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| Abstract: | To clarify cuttlefish phylogeny, mitochondrial cytochrome c oxidase subunit I (COI) gene and partial 16S rRNA geneare sequenced for 13 cephalopod species. Phylogenetic trees are constructed, with the neighbor-joining method.Coleoids are divided into two main lineages, Decabrachia and Octobrachia. The monophyly of the order Sepioidea,which includes the families Sepiidae, Sepiolidae and Idiosepiidae , is not supported. From the two families ofSepioidea examined, the Sepiolidae are polyphyletic and are excluded from the order. On the basis of 16S rRNA andamino acid of COI gene sequences data, the two genera (Sepiella and Sepia) from the Sepiidae can be distinguished, butdo not have a visible boundary using COI gene sequences. The reason is explained. This suggests that the 16S rDNAof cephalopods is a precious tool to analyze taxonomic relationships at the genus level, and COI gene is fitter at ahigher taxonomic level (i.e., family). |
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| Keywords: | phylogeny cephalopods cuttlefish COI 16S rRNA |
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