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对山西省朔县省虹鳟试验场1987年8月在亲鱼中爆发的一次流行病进行了病原菌分离、培养、毒力试验和详细的生理生化测定,确定点状气单胞菌为其病原菌。并对该菌胞外产物的致病性进行了研究,通过测定其溶血活性、酪蛋白酶活性、对鱼致死性以及对其引起的组织病理学变化的观察,初步确定了胞外产物与该菌侵袭力的相关性。
Pathogenic bacteria isolation, culture, virulence test and detailed physiological and biochemical determination were carried out on an epidemic outbreak in broodstock in Shuixian County rainbow trout test site in August 1987, and Aeromonas sobria was identified as its pathogen. The pathogenicity of extracellular products of this strain was also studied. The hemolysis activity, the activity of caseinase, the lethality of fish and the histopathological changes induced by this strain were observed. Invasiveness of relevance.