Phylomitogenomics of Malacostraca(Arthropoda: Crustacea)  

作　　者：SHEN Xin TIAN Mei YAN Binlun CHU Kahou 

机构地区：[1]Jiangsu Key Laboratory of Marine Biotechnology/College of Marine Science, Huaihai Institute of Technology [2]Beijing Institutes of Life Science, Chinese Academy of Sciences [3]Simon F.S.Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong

出　　处：《Acta Oceanologica Sinica》2015年第2期84-92,共9页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 41476146 and 40906067;Hong Kong Scholars Program under contract No.XJ2012056;China Postdoctoral Science Foundation under contract Nos 2012M510054 and 2012T50218;a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘　　要：Along with the sequencing technology development and continual enthusiasm of researchers on the mitochondrial genomes, the number of metazoan mitochondrial genomes reported has a tremendous growth in the past decades. Phylomitogenomics—reconstruction of phylogenetic relationships based on mitochondrial genomic data—is now possible across large animal groups. Crustaceans in the class Malacostraca display a high diversity of body forms and include large number of ecologically and commercially important species. In this study, comprehensive and systematic analyses of the phylogenetic relationships within Malacostraca were conducted based on 86 mitochondrial genomes available from Gen Bank. Among 86 malacostracan mitochondrial genomes, 54 species have identical major gene arrangement（excluding t RNAs） to pancrustacean ground pattern,including six species from Stomatopoda, three species from Amphipoda, two krill, seven species from Dendrobranchiata（Decapoda）, and 36 species from Pleocyemata（Decapoda）. However, the other 32 mitochondrial genomes reported exhibit major gene rearrangements. Phylogenies based on Bayesian analyses of nucleotide sequences of the protein-coding genes produced a robust tree with 100% posterior probability at almost all nodes. The results indicate that Amphipoda and Isopoda cluster together（Edriophthalma）（BPP=100）.Phylomitogenomic analyses strong support that Euphausiacea is nested within Decapoda, and closely related to Dendrobranchiata, which is also consistent with the evidence from developmental biology. Yet the taxonomic sampling of mitochondrial genome from Malacostraca is very biased to the order Decapoda, with no complete mitochondrial genomes reported from 11 of the 16 orders. Future researches on sequencing the mitochondrial genomes from a wide variety of malacostracans are necessary to further elucidate the phylogeny of this important group of animals. With the increase in mitochondrial genomes available, phylomitogenomics will emerge as an important componenAlong with the sequencing technology development and continual enthusiasm of researchers on the mitochondrial genomes, the number of metazoan mitochondrial genomes reported has a tremendous growth in the past decades. Phylomitogenomics—reconstruction of phylogenetic relationships based on mitochondrial genomic data—is now possible across large animal groups. Crustaceans in the class Malacostraca display a high diversity of body forms and include large number of ecologically and commercially important species. In this study, comprehensive and systematic analyses of the phylogenetic relationships within Malacostraca were conducted based on 86 mitochondrial genomes available from Gen Bank. Among 86 malacostracan mitochondrial genomes, 54 species have identical major gene arrangement（excluding t RNAs） to pancrustacean ground pattern,including six species from Stomatopoda, three species from Amphipoda, two krill, seven species from Dendrobranchiata（Decapoda）, and 36 species from Pleocyemata（Decapoda）. However, the other 32 mitochondrial genomes reported exhibit major gene rearrangements. Phylogenies based on Bayesian analyses of nucleotide sequences of the protein-coding genes produced a robust tree with 100% posterior probability at almost all nodes. The results indicate that Amphipoda and Isopoda cluster together（Edriophthalma）（BPP=100）.Phylomitogenomic analyses strong support that Euphausiacea is nested within Decapoda, and closely related to Dendrobranchiata, which is also consistent with the evidence from developmental biology. Yet the taxonomic sampling of mitochondrial genome from Malacostraca is very biased to the order Decapoda, with no complete mitochondrial genomes reported from 11 of the 16 orders. Future researches on sequencing the mitochondrial genomes from a wide variety of malacostracans are necessary to further elucidate the phylogeny of this important group of animals. With the increase in mitochondrial genomes available, phylomitogenomics will emerge as an important componen

关 键 词：MALACOSTRACA CRUSTACEA Phylomitogenomics gene arrangement mitochondrial genome 

分 类 号：S917.4[农业科学—水产科学]