Phylogenetic relationship of Podocopida (Ostracoda: Podocopa) based on 18S ribosomal DNA sequences  

作　　者：YU Na ZHAO Meiying CHEN Liqiao YANG Pin 

机构地区：[1]School of Life Science,East China Normal University,Shanghai 200062,China

出　　处：《Acta Oceanologica Sinica》2006年第2期99-108,共10页海洋学报(英文版)

基　　金：supported by the Major Project of the National Natural Science Foundation of China under contract No.30130040;the Cultivation Fund of the Key Scientific and Technical hmovation Project,Ministry of Education of China under contract No.704023;E-institute of Shanghai Municipal Education Commission under contract No.E03009;the Program of Shanghai Subject Chief Scientist under contract No.05XD14005 to Chen Liqiao;the PhD Program Scholarship Fund of ECNU 2005.

摘　　要：Nucleotide sequences from 18S rDNA of 11 ostracodes, which represent four suborders and six superfamilies of podocopidan, were determined. The phylogenetic relationships were analyzed based on three kinds of methods (maximum-likelihood, maximum-parsimony, and neighbor-joining), and the three topologies gained were basically similar. The results have showed that (1) a monophyletic Podocopida was supported strongly; (2) the phylogenetic relationships of four suborders were (Darwinulocopina plus (Bairdiocopina plus (Cytherocopina plus Cypridocopina))), which indicated that a close relationship between Cytherocopina and Cypridocopina, and Darwinulocopina had separated early from the main podocopinan; (3) Cypridocopinan formed a monophyletic group, among which the phylogenetic relationship of three superfamilies was (Cypridoidea plus (Macrocypridoidea plus Pontocypridoidea)).Nucleotide sequences from 18S rDNA of 11 ostracodes, which represent four suborders and six superfamilies of podocopidan, were determined. The phylogenetic relationships were analyzed based on three kinds of methods (maximum-likelihood, maximum-parsimony, and neighbor-joining), and the three topologies gained were basically similar. The results have showed that (1) a monophyletic Podocopida was supported strongly; (2) the phylogenetic relationships of four suborders were (Darwinulocopina plus (Bairdiocopina plus (Cytherocopina plus Cypridocopina))), which indicated that a close relationship between Cytherocopina and Cypridocopina, and Darwinulocopina had separated early from the main podocopinan; (3) Cypridocopinan formed a monophyletic group, among which the phylogenetic relationship of three superfamilies was (Cypridoidea plus (Macrocypridoidea plus Pontocypridoidea)).

关 键 词：18S rDNA nuclear gene molecular phylogeny Podocopida OSTRACODA 

分 类 号：Q951[生物学—动物学]