华东师范大学学报(自然科学版) ›› 2005, Vol. 2005 ›› Issue (4): 78-86.

• 生命科学 环境科学 • 上一篇    下一篇

基于18S rDNA序列研究腺介虫亚目系统发育关系

禹娜,赵梅英,陈立侨*,李恺   

  1. 华东师范大学 生命科学学院,上海200062
  • 收稿日期:2004-05-19 修回日期:2004-09-08 出版日期:2005-11-25 发布日期:2005-11-25
  • 通讯作者: 陈立侨

Preliminary Study on Phylogenetic Relationships of Cypridocopina (Ostracoda: Podocopida) Based on 18S rDNA Sequences(Chinese)

YU Na,ZHAO Mei-ying,CHEN Li-qiao,LI Kai   

  1. School of Life Science, East China Normal University, Shanghai200062, China
  • Received:2004-05-19 Revised:2004-09-08 Online:2005-11-25 Published:2005-11-25
  • Contact: CHEN Li-qiao

摘要: 基于1 720 bp的18S rRNA基因序列以Darwinula sp.和Cytherelloidea. munechikai为外群,采用最大简约法(MP法)和邻接法(NJ法)对腺介虫亚目(Cypridocopina)3总科5科9种动物的系统发育关系进行了分析.结果表明:1) 现生腺介虫亚目动物为单系群;2) 两种营海水生活的介形类—海介虫总科(Pontocypridoidea)和大介虫总科(Macrocypridoidea)间的亲缘关系较近;3) 现生腺介虫总科(Cypridoidea)也为单系群,但该总科内各科间关系较复杂,主要分为两支,其中腺介虫科的Dolerocyprissp.与萤光介虫科的Candona holzkanpfi聚成一支;而萤光介虫科的Cypria crenulata和泥介虫科的Ilyocypris. angulata同时与腺介虫科其它动物聚为一支.

关键词: 介形类, 腺介虫亚目, 18S rDNA序列, 系统发育, 介形类, 腺介虫亚目, 18S rDNA序列, 系统发育

Abstract: Nucleotide sequences for the 18S rDNA (1 720 bp) of 11 ostracoda species, representing 3 superfamilies and 5 families, were analyzed based on maximum parsimony (MP) and neighbor joining (NJ). The topologies of phylogenetic relationships gained by two analytic methods are similar. The results shown: 1) Cypridocopina forms a monophyletic group; 2)Close rationship between Pontocypridoidea and Macrocypridoidea can be postulated; 3)Cypridoidea is considered as a monophyletic group, but the rationships among cypridoidean families could not be resolved from 18S rDNA.

Key words: Cypridocopina, 18S rDNA, phylogeny, ostracodes, Cypridocopina, 18S rDNA, phylogeny

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