尾斑瘰螈的核型和C带研究  

A Study of the Karyotypes and C-bands of Paramesotriton caudopunclatus

作　　者：谷晓明[1,2] 高晓冬[1,2] 

机构地区：[1]贵州师范大学生物系 [2]贵州师范大学附属中学

出　　处：《遗传》1997年第1期13-15,共3页Hereditas（Beijing)

基　　金：贵州省自然科学基金

摘　　要：用常规Ｇｉｅｍｓａ染色和ＢＳＧ技术研究了尾斑瘰螈的核型和Ｃ带。该螈的染色体数为２ｎ＝２４，包括９对中部着丝粒染色体和３对亚中部着丝粒染色体（Ｎｏｓ．７、１０、１１）；ＢＳＧ显带处理后全部染色体都显示了弱的着丝粒带，同时还显示了４６条近着丝粒区插入带；其核型和Ｃ带均不同于已研究过的国内蝾螈科动物，未发现与性别有关的异形染色体。The karyotype and C-bands of Paramesotriton caudopunclatus Liu et Hu were studied by means of both conventional Giemsa staining and BSG technique. The diploid number of this species is 24, consisting of 9 pairs of metacentric and 3 pairs of submetacentric elements. All chromosomes have an inserted pericentric band in both chromosome arms except that Nos. 11 and 12 chromosomes have an inserted pericentric band only in one chromosome arm. Besides the main bands, weak centromeric bands apear in all of the chromosomes. The karyotype and C-bands of Paramesotriton caudopunclatus indicated the dissimilarty with other examined species in Chinese salamandrids. No heteromorphic pair of chromosomes was detected between male and female karyograms.

关 键 词：蝾螈科 尾斑瘰螈 C带 染色体组型 

分 类 号：Q959.520.3[生物学—动物学]