两种泥鳅不同群体遗传变异的RAPD分析  

GENETIC VARIATION OF TWO LOACH SPECIES REVEALED BY RAPD ANALYSIS

作　　者：常重杰[1] 周荣家[1] 余其兴[1] 

机构地区：[1]武汉大学生命科学学院,武汉430072

出　　处：《动物学报》2001年第1期89-93,共5页ACTA ZOOLOGICA SINICA

基　　金：国家自然科学基金! (No .39770 40 7);教育部博士点基金

摘　　要：应用RAPD技术 ,分析了采自于我国黄河、长江和珠江三大水系中游的大鳞副泥鳅和泥鳅不同群体间的遗传变异。结果表明 :种内不同群体间带纹相似度在 0 730～ 0 938之间 ;遗传距离为 0 0 89～ 0 2 45 ;种间不同群体间的带纹相似度为 0 392～ 0 5 0 5 ,遗传距离为 0 6 2 0～ 0 80 0。两种泥鳅采自武汉的群体 ,其不同个体间的相似度较之其它群体为低 ,表明其群体内遗传变异程度较高。Inter and intra population genetic variation of Misgurnus anguillicaudatus and Paramisgurnus dabrganus, from middle reaches of Huanghe, Changjiang and Zhujiang rivers, were analyzed using RAPD makers. The results showed that: the average band sharing coefficient of conspecific populations is 0 730～0 938, the corresponding genetic distance is 0 089～0 245; the average band sharing coefficient of interspecies populations is 0 392～0 505, the corresponding genetic distance is 0 620～0 800. The average band sharing coefficient of Wuhan samples is lower than the that of other populations. It indicated that the genetic distance among individuals of Wuhan population is higher. No sex specific fragments were found in the two loaches.

关 键 词：泥鳅 大鳞副泥鳅 群体遗传变异 RAPD 

分 类 号：Q953[生物学—动物学]