泉水唇鱼的核型和带型研究  

STUDY ON THE KARYOTYPE AND BANDING OF  Semilabeo prochilus(PISCES)

作　　者：王蕊芳[1] 贺维顺[1] 吴世芳[1] 

机构地区：[1]中国科学院昆明动物研究所细胞与分子进化开放研究实验室

出　　处：《Zoological Research》1997年第4期411-414,共4页动物学研究（英文）

摘　　要：本文用上皮细胞培养方法对金沙江水系的泉水唇鱼（Ｓｅｍｉｌａｂｅｏｐｒｏｃｈｉｌｕｓ）染色体进行了研究。其二倍体数２ｎ＝５０，核型组成为１６ｍ＋２０ｓｍ＋１４ｓｔ，ＮＦ＝８６。阳性Ｃ－带位置有几种类型：（１）着丝粒区；（２）短臂异染色质化；（３）插入异染色质带。Ａｇ－ＮＯＲｓ有７条，出现在Ｎｏｓ．１０—１３染色体短臂。根据以上所述的特征。In this paper the karyotype, C-banding and Ag-NORs of Semilabeo prochilus from Jin Sha River system (Yunnan Province) have been studied The diploid number of Semilabeo prochilus  is 50(16m+20sm+14st)and NF=86 The centromeric distribution of heterchrom-atin has been demonstraed in most of chromosomes The short arm of No 11 was found to be a complete heterochromatin Moreover, the interstitial heterochromatin has observed on the long arm Nos 9, 10, 11 Silver-staining showed 7 Ag-NORs at Nos 10, 11, 13 chromosomes, but only one Ag-NORs appeared in the No 13 Based on the above data, Semilabeo prochilus  might be specilized species in genus Semilabeo 

关 键 词：泉水唇鱼 鲤科 染色体组型 带型 

分 类 号：Q959.468[生物学—动物学]