%0 Journal Article %T Electrophoretic Analysis of Isozymes and Discussionabout Species Differentiation in Three Species of Genus Gymnocypris
藏北3种裸鲤同工酶的电泳分析及物种分化的探讨 %A CHEN Yi-Feng %A HE De-Kui %A CHEN Yi-yu %A
陈毅峰 %A 何德奎 %J 动物学研究 %D 2001 %I Chinese Academy of Sciences %X By using the method of electrophoresis,three isozymes (lactate dehydrogenase,malate dehydrogenase and esterase) of three species of genus Gymnocypris were described and analyzed from North Tibet in this paper. The results showed that all three isozymes presented interspecific difference and distinct differentiation among individuals in the same population,and there was no electrophorectic difference between males and females. Analysis of relationships among three naked carps indicated a high degree of similarity between G. selincuoensis and G. cuoensis ,whereas low degree between G. selincuoensis and G. namensis . Furthermore,three isozymes presented expression of null alleles,and the duplicate genes of LDH A 2,LDH B 2,s MDH A 2 and m MDH B 2 also expressed in some individuals. Compared to other tetraploid fishes,three naked carps retained more functional duplicate genes and null alleles. This suggests fishes of genus Gymnocypris are at the early stage of evolution after polyploidization than that of fishes of Catostomidae,it directly related to the later time of schizothoracine fishes originate as well as severe environment. %K Naked carps ( %K Gymnocypris %K ) %K North Tibet %K Isozyme electrophoresis %K Duplicate gene %K Null allele %K Species differentiation
裸鲤 %K 藏北 %K 同工酶电泳 %K 重复基因 %K 沉默基因 %K 物种分化 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=7C502F1A6798ACE1B8C57E291C48C7F1&aid=1F0351604E5B9FFF&yid=14E7EF987E4155E6&vid=BC12EA701C895178&iid=CA4FD0336C81A37A&sid=9CF7A0430CBB2DFD&eid=2A8D03AD8076A2E3&journal_id=0254-5853&journal_name=动物学研究&referenced_num=3&reference_num=37