鲤科四种鱼肠道菌群的相似性及其与系统进化的关系

在同一背景条件下,对草鱼、白鲢、团头鲂和鲤鱼等4种鱼的肠道菌群中好氧性菌或兼性厌氧菌进行分析鉴定,得到4种鱼之间的肠道菌群相似值.用UPGMA和NJ法构建鲤科的雅罗鱼亚科、鲢亚科、鳊亚科和鲤亚科等4种亚科的系统演化树.不同亚科的鱼间菌群分布有较大差异,但雅罗鱼亚科和鳊亚科在菌群分布方面有极显著的正相关性.哈夫尼亚菌属、致病杆菌属、气单胞菌属、柠檬酸菌属、假单胞菌属等在4种鱼肠道中均有分布,链球菌属、拉恩氏菌属、芽孢杆菌属、葡萄球菌属等属于共生菌.雅罗鱼亚科和鳊亚科相邻邻接为一个共同接点,该接点与鲤亚科连接为一个接点,鲤亚科可能是最原始的类型。 Abstract:This paper is an analysis and appraisal of aerobe and facultative anaerobe among intestinal bacterium of the following fishes:Ctenophar yngodomidellus,Hypophtha lmichthys molitrix,Megalorama ambly cephala Yih and Cyprinus carpio haematopterus under same surroundings.After that,We contain similarity values of intestinal bacteria were obtained between every two kinds of the four fishes.We constructed the revolutionary trees of in Cyprinidate,Leuciscinae,Abramidinae,Cyprininae and Hypophthalmi by NJ method and UPGMA method according to the similarity values.

A Study of the Construction of Evolotionary Tree of Four Fishes in Cyprinidate by Similarity Values of Intesjinal Microflora