本地胡子鲶头甲溃烂症病原菌的分离与特性  

Isolation and character of pathogenic bacteria from Clarias fuscus with cankering head disease

作　　者：丁燏[1] 唐啸尘[1] 吴应根[1] 

机构地区：[1]广东省水产经济动物病原生物学及流行病学重点实验室广东海洋大学水产学院,广东湛江524025

出　　处：《河北渔业》2009年第12期30-33,共4页

基　　金：广东省农业攻关项目(No.B205);广东海洋大学自然科学基金(No.0612190;No.0612050)

摘　　要：从患头甲溃烂症的本地胡子鲶(Clarias fuscus)病灶处分离出1株细菌Hu02,用该菌株回归感染健康的本地胡子鲶,死亡率为100%,证明其是该病的致病菌。经细菌形态学观察,培养特征和生理生化反应测定,菌株Hu02被鉴定为嗜水气单胞菌(Aeromonas hydrophila)。经药敏试验结果表明,该菌株对氟哌酸、红霉素、利福平、庆大霉素等敏感。培养温度试验还表明,该菌株在4℃不生长,在17℃、28℃、37℃和42℃中均可生长,其中28℃是其最适生长温度。A bacterium was isolated from Clarias fuscus with cankering head,which was named as Hu02 temporarily,had been proved to be the causative agent through the experimental infection test.It was identified by morphological,physiological and biochemical tests.And its drug sensitivity was determined through slip method.The results showed that the pathogen Hu02 should be identified as Aeromonas hydrophila.And the pathogen was sensitive to Norfloxacin,Erythromycin,Rifamycin and Gentamycin,etc.The bacteria can grow at 17 ℃,28 ℃（Opatimal temperature）,37 ℃ and 42 ℃.But it can not grow at 4 ℃.These results were helpful for the prevention and treatment of this fish disease.

关 键 词：本地胡子鲶 分离鉴定 嗜水气单胞菌 头甲溃烂症 

分 类 号：S943[农业科学—水产养殖]