遗传 ›› 2001, Vol. 23 ›› Issue (5): 435-613.

• 论文 • 上一篇    下一篇

几种鳄分子系统发生的探讨

朱伟铨1;王义权1;吴孝兵2;周开亚1 ZHU Wei-quan1;WANG Yi-quan1;WU Xiao-bing2;ZHOU Kai-ya1   

  1. 1.南京师范大学生命科学学院遗传资源研究所,南京 210097 2.安徽师范大学生命科学院,芜湖 241000 1.Institutes of Genetic Resources,College of Life Sciences,Nanjing Normal University,Nanjing 210097,China; 2.College of Life Sciences,Anhui Normal University,Wuhu,241000,China
  • 收稿日期:1900-01-01 出版日期:2001-10-10 发布日期:2001-10-10

The Molecular Phylogeny of Four Crocodilians Based on the Sequence of Mitochondrial ND4 and Cyt b Gene

  • Received:1900-01-01 Online:2001-10-10 Published:2001-10-10

摘要: 百年来关于扬子鳄的分类学位置存在着很多争议,本文测得扬子鳄、暹罗鳄和湾鳄的mtDNAND4和Cytb基因,并从GenBank中获得密西西比鳄和海龟的ND4基因和Cytb基因相应片段.用ClustalX1.8进行对位排列,以海龟为外群构建分子进化系统树.结果显示:在鳄类动物中,扬子鳄与密西西比鳄的亲缘关系最近,两者ND4基因序列碱基差异为20.68%,而Cytb基因序列碱基差异为14.43%;但扬子鳄与密西西比与鳄的分类问题仍将有待进一步探讨。
Abstract:A portion of mitochondrial ND4 and cytochrome b gene of 3 species of erocodilian was sequenced.Additional homologous sequences of Alligator mississippinisis from GenBank were aligned together and compared with Cheloniamydas.The phylogenetic trees were reconstructed with the neighbor-joining (NJ) algorithm.Alligator sinensis ismore related to Alligator mississippinesis than others though the diversity of their mitochondrial ND4 gene reached 20.68% while Cyt b gene 14.43%.It needs further study to determine the phylogenetic relationships of Alligatorsinensis and Alligator mississi ppinisis.

关键词: 分子系统发生   
Key words,
Crocodilian, Cyt b基因序列, ND4基因序列,