菲菊头蝠的核型研究

Karyotype of Rhinolophus pusillus from Guangxi,China

取骨髓细胞,采用空气干燥法对来自广西桂林的菲菊头蝠Rhinolophus pusillus的核型进行研究,结果:菲菊头蝠的染色体数为2n=62,染色体臂数(NF)是60;30对常染色体皆为端着丝粒染色体(t),相邻同源染色体大小相近,不易区分;X染色体为大型亚端着丝粒染色体(st),其长度仅次于第3号染色体,Y染色体是小型的端着丝粒染色体(t)。菲菊头蝠的核型属于Harada等人划分的菊头蝠属中的第1类群,为最原始的类群。

The karyotype of Rhinolophus pusillus from Guilin Guangxi was studied,using the chromosomes prepared from bone marrow cells after colehicine treatment in vivo by the air drying technique.R.pusillus has a diploid chromosome number of 62,and a fundamental number of 60.The sex determination of R.pusillus is XY.R.pusillus belongs to the first group classified by Haradh et al.Based on the karyotype evolution,R.pusillus is the most primary type.This is consistent with its various primary morphological features.