福建大头蛙五个地理居群核型多样性  

Study on karyotypes diversity of five different geographical population in Limnonects fujianensis

作　　者：许竟成[1] 唐鑫生[1] 彭巧玲[2] 聂刘旺[2] 

机构地区：[1]黄山学院生命与环境科学学院,安徽黄山245021 [2]安徽师范大学生命科学学院,安徽芜湖241000

出　　处：《生物学杂志》2007年第6期43-45,共3页Journal of Biology

基　　金："安徽重要生物资源保护与利用研究"安徽省重点室验室基金;国家自然科学基金(No.30640048)资助;黄山学院科研基金

摘　　要：采用骨髓细胞蒸汽固定法制备染色体标本,研究了产于安徽、浙江、江西、福建和湖南5个地理居群福建大头蛙的核型。结果表明:5居群样本的细胞染色体数均为2n=22,NF=44,核型模式为7+4。福建居群11对染色体全为中部着丝粒染色体;其它4个居群中的NO.3为亚中部着丝粒染色体,其余为中部着丝粒染色体;各居群中NO.3和NO.7的相对长度和臂比值存在显著或极显著差异。显示不同地理居群福建大头蛙的核型具有丰富的多样性。The karyotypes of Limnonectes fujianensis from Anhui, Zhejiang, Jiangxi, Fujian and Hunan province were studied. The chromosomal specimen was made by the stream - fixation method of marrow cell. Result demonstrated that L.fufianensis from five different geographical populations have the same 2n = 22, NF = 44 and 7 ＋ 4 karyotypic formulae, but some dissimilarities were found among them. In Fujian population, all of the 11 pairs chromosomes were metacentric chromosomes, however, in the other, the NO. 3 pair was submetacentric chromosomes, the rest pairs were metacentric chromosomes. There were obvious differences in relative length and arm ratio of NOs. 3,7 among the five populations.

关 键 词：居群 福建大头蛙 核型多样性 

分 类 号：Q953[生物学—动物学]