从线粒体细胞色素b探讨长臀鲃属三个种分类与进化的关系  

Mitochondrial Cytochrome b Gene Sequences and Classification of Three Species of Genus Mystacoleucus

作　　者：孔庆鹏[1] 罗静[1] 黄顺友[2] 向余劲攻[1] 张亚平[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,昆明650223 [2]中国科学院昆明动物研究所,昆明650223

出　　处：《遗传》2000年第6期379-384,共6页Hereditas（Beijing)

基　　金：云南省科委基金资助项目

摘　　要：本研究测定了长臀属(MystacoleucusG櫣ｎｔｈｅｒ）中的３个种 :月斑长臀(M.chilopterusFowler)、长臀[M.marginatus(CuvieretValenciennes)]和细尾长臀(M.lepturusHuang)共22个个体的线粒体细胞色素b部分基因片段 ,其序列为408bp,并选用亚科(Acheilognathinae)中华(RhodeussinensisG櫣ｎｔｈｅｒ）及亚科（Ｂａｒｂｉｎａｅ）中的云南倒刺(Spinibarbus.denticulatusyunnanensisTsu)作为外群。结果表明 :细尾长臀与月斑长臀、长臀间存在遗传分化 ,分化程度与鲤科其它鱼类相似 ;而月斑长臀和长臀却无法分开。结果提示 ,月斑长臀和长臀很可能为同一个种。此外 ,长臀属与云南倒刺的亲缘关系较近 ,表明有争议的长臀属归入亚科是合理的。We analyzed 408 base pairs of cytochrome b gene of mitochondrial DNA from 22 individuals of 3 species in genus Mystacoleucus: M.chilopterus, M.marinatus and M.lepturus.Selected outgroups were Rhodeus sinensis in Acheilognathinae and Spinibarbus denticulatus yunnanensis in Barbinae.Our results indicate that M.lepturus did not have the common haplotypes as M.chilopterus or M.Marginatus.It suggests that there not be gene flow between M.lepturus and the other two species.The result supports that the species M.lepturus exist.Our data suggest that Chilopterus and Marginatus did not form monophyletic group respectively,which indicates the two species may be the same species.Meanwhile,according to the analysis,the genus Mystacoleucus is relatively closer to Spinibarbus,and it suggests it may be reasonable Mystacoleucus in subfamily Barbinae.

关 键 词：细胞色素B 线粒体 BA亚科 长臂Ba属 分类 进化 

分 类 号：Q959.468[生物学—动物学]