基于Cyt b标记研究尖鳍鲤在鲤形目鱼类中的系统发育地位  

Phylogenetic analysis of Cyprinus Acutidorsalis Wang in Cypriniformes based on the Cyt b Marker

作　　者：姚东林[1] 王超[1] 周爱国[1,2] 谢少林[1,2] 邹记兴[1] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642 [2]清远市北江水产科学研究所,广东清远511510

出　　处：《广东农业科学》2014年第12期114-118,共5页Guangdong Agricultural Sciences

基　　金：国家科技支撑计划项目(2013BAD10B04-1);广东省海洋渔业科技推广专项(A201301F03)

摘　　要：基于线粒体Cytb标记分析尖鳍鲤及其他28种鲤形目鱼类之间的遗传距离，并且通过邻接法构建系统进化树。结果显示，这29种鱼类的遗传距离范围在0．003～0．304之间，平均遗传距离为0．227．尖鳍鲤和三角鲤的遗传距离最小、为0．003，几乎接近种内遗传距离的差异水平，显示两者在遗传上高度接近。从进化上看。尖鳍鲤位于鲤科的分支之中，与三角鲤有较近的亲缘关系，两者以很高的支持率聚成姐妹分支（bp=95）．然后再与锦鲤聚在一起（bp=100）。研究初步确定了尖鳍鲤在鲤形目中的分类地位。The genetic distances among Cyprinus acutidorsalis Wang and other 28 fish species in Cypriniformes were analyzed based on the mitochondrial Cyt b gene, and the phylogenetic tree was further constructed through neighbor- joining method. The results revealed that the genetic distance ranged from 0.003 to 0.304 among the 29 species and the average interspecific genetic distance was 0.227. C. acutidorsalis Wang and C. multitaeniata showed the least genetic distance of 0.003, close to the difference levels of the intraspecific genetic distance, which indicated that both of them were genetically close. From an evolutionary point of view, C. acutidorsalis Wang was located in the branch of Cyprinidae, and had close genetic relationship with C. multitaeniata, both of which clustering as sister branches （bp=95） got together with C. carpio （bp=100）. This study initially identified the taxonomic status of C. acutidorsalis Wang in Cypriniformes.

关 键 词：细胞色素B 分子系统学 尖鳍鲤 鲤科 

分 类 号：S965.299[农业科学—水产养殖] Q959.468[农业科学—水产科学]