濒危鱼类稀有白甲鱼染色体核型分析  

Chromosome Karyotype Analysis in Endangered Species Onychostoma rara

作　　者：冉光鑫[1] 代应贵[2] 罗昊翔[1] 

机构地区：[1]黔西南民族职业技术学院,贵州兴义562400 [2]贵州大学动物科学学院

出　　处：《现代农业科技》2014年第8期242-243,248,共3页Modern Agricultural Science and Technology

基　　金：国家自然科学基金(30760189;30960297);贵州省科学技术基金[黔科合J字(2007)2062];贵州省科学技术基金[黔科合J字(2013)2268]

摘　　要：以稀有白甲鱼头肾组织为材料,采用腹腔注射植物血细胞凝集素(PHA)、秋水仙素和空气干燥法制备染色体标本,进行染色体核型分析。结果表明:稀有白甲鱼染色体为50条,核型公式为2n=50,12m+16sm+10st+12t,NF=78。未发现异型染色体、随体染色体和次缢痕;其核型符合典型的低位类群鱼类核型特征。Karyotype of Onychostoma rara was studied with chromosome samples prepared from head kidney by PHA ,colchicine injection and air-dried method.The results showed that there were 50 chromosomes in O.rara and its karyotype formula was 2n=50,12m＋16sm＋10st＋12t ,NF=78. There was no evidence of heterotypical chromosome, satellites or secondary constriction.The karyotype of O.rara was in accordance with the lower group of fish evolutionary taxonomy.

关 键 词：稀有白甲鱼 染色体 核型 

分 类 号：S917.4[农业科学—水产科学]