不同地理居群蓝尾石龙子染色体组型的比较  

Comparison of Karyotypes of Different Geographical Populations of Eumeces elegans

作　　者：刘永章[1] 张永普[2] 

机构地区：[1]温州医学院生物学教研室,温州325027 [2]温州师范学院生物与环境科学系,温州325027

出　　处：《动物学杂志》2003年第5期19-24,共6页Chinese Journal of Zoology

基　　金：温州市科技发展计划项目基金 (No.S2 0 0 2A0 2 1)

摘　　要：研究了浙江杭州、洞头、温州和福建宁德 4个地理居群蓝尾石龙子 (Eumeceselegans)的染色体组型 ,其二倍体均为 2n =2 6( 2 0V +6I) ,NF =46,含有大型染色体 6对、小型染色体 7对 ,除 3对小型的近端染色体外 ,其余均为中部着丝粒。但 4个不同地理居群蓝尾石龙子之间的染色体在相对长度、臂比值、着丝粒指数等方面存在着一定的差异 ,说明不同地理居群的蓝尾石龙子的染色体具有丰富的多样性。The karyotypes of Eumeces elegans from Dongtou, Hangzhou and Wenzhou of Zhejiang Province and Ningde of Fujian Province were studied by making chromosomal specimens. Thus the karyotypes of four populations of E.elegans were compared. The results demonstrated that E.elegans from these four geographical populations have 2n26(20V+6I), including 6 pairs of macrochromosomes and 7 pairs of small chromosomes and 7 pairs of microchromosomes. Except for the 3 pairs of small acrocentric chromosomes, the rest are all metacentric chromosomes, NF46. But some dissimilarities were found among populations. First, the relative lengths of chromosomes were different among them, and secondly, the arm ratios and the centromere indexes were also different, which shows that chromosomes vary between different geographicial populations.

关 键 词：居群 蓝尾石龙子 染色体组型 

分 类 号：Q953[生物学—动物学]