摘要
于1985—1986年,以山西省虹鳟鱼实验场的虹鳟病鱼(7—12cm)为材料,进行鱼病研究。从病鱼肝、脾、肾中分离出致病细菌,经分类鉴定为鳗弧菌生物变种Ⅲ(新生物变种),隶属于弧菌Ⅰ组中的淡水亚组弧菌。对该菌进行的药物筛选的抑菌试验表明:62.5μg/L的强力霉素和100μg/L的鱼安(主要成分为氯代脲酸)有效,同时结合采用井水温度低于自流泉水的措施,此病可得到控制。
In 1985, a bacterial disease happened to the Rainbow trout fingerling (7-12cm) in the farm of Shuoxian county, Shanxi Province. Seven or eight hundred trout died every day during the peak period of death. The strains isolated from the liver, kidney and spleen of the diseased rainbow trout were shown to be the cause of the disease by infection experiment.This bacterium is short rod shaped, with a little curved or straight axis and round ends, 0.6-0.9×1.2-l-6μm, motile by a single polar flagellum, nonsporulating and Gramne-gative. It's positive in fermentation of glucose, catalase, oxidase and arginine hydrolysis, sensitive to vibriostatic agent 0/129 with 150μg. Growth occurs in broth without salt (NaCl), but not in broth with 6.0% salt. The mol% G + C of DNA of this bacterium is 44.65(Tm). According to above and other characteristics of this strain and Bergey's Manual of Systematic Bacteriology, it's considered to be a Vibrio anguillarum biovar, Ⅲ, biovar, nov. belonging to Vibrio group Ⅰ, fresh water subgroup that reported by Riich KUSUCA et al.The tests of medical control of this bacterium indicated that a dosage of 62.5/μg/L Doxy-cycline and 100μg/L Yu An is effective. Moreover, when the lower temperature well water is used to cultivate trout, this disease can be controlled.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1991年第3期226-232,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金
