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从患败血病的丰产鲫 (Carassiusauratusofpenze (♀ )×Cyprinusacutidorsalis (♂ ) )脾脏中分离到的一株细菌CSS 4 2 ,经人工感染证实为病原菌。其主要特征为短杆状 ,革兰氏阴性 ,有运动性 ,极端生单鞭毛 ,不产生芽孢 ,无荚膜 ;对 0 1 2 9弧菌抑制剂不敏感 ,能利用葡萄糖、麦芽糖、甘露醇、蔗糖、肌醇等 ,不利用丙二酸盐、乳糖、木糖、棉子糖、山梨糖、福寿草醇等 ;氧化酶、精氨酸双水解酶阳性 ,尿素、苯丙氨酸脱羧酶、鸟氨酸脱羧酶阴性。经细菌自动化鉴定系统VITEK AMS 60鉴定 ,CSS 4 2菌株为豚鼠气单胞菌(Aeromonascaviae)。药物敏感试验表明 ,CSS 4 2对链霉素、妥布霉素、氯霉素、利福平、诺氟沙星、呋喃妥因等药物敏感 ,对青霉素G等不敏感
A bacterial strain, CSS 4 2, isolated from the spleens of Carassius aratus ofpenze (♀) × Cyprinusacutidorsalis (♂), was confirmed as a pathogen by artificial infection. Its main features are short rod-shaped, Gram-negative, motile, extremely single flagella, no spores, no capsule; insensitive to 0 1 2 9 Vibrio inhibitors, can use glucose, maltose, mannitol , Sucrose, inositol and the like, without using malonate, lactose, xylose, raffinose, sorbose, fosinol, etc .; oxidase, arginine hydrolase positive, urea, phenylalanine decarboxylase, Ornithine decarboxylase negative. The strain was identified as Aeromonascaviae by the VITEK AMS 60 bacterial identification system. Drug susceptibility tests showed that CSS 4 2 is sensitive to streptomycin, tobramycin, chloramphenicol, rifampicin, norfloxacin, nitrofurantoin and other drugs and insensitive to penicillin G