近年来,大连地区及辽宁省一些沿海养殖的中国对虾,每年都有不同程度的“红腿病”(黄鳃病)发生,以8月中旬至9月中旬为发病高峰期,严重时造成大量成虾死亡。 我们连续3年,从典型发病的虾心脏血液、肝胰脏、鳃丝中分离纯化获得菌株17株,经感染试验证实为病源菌。感染后的发病虾出现与自然发病虾完全相同的症状。而且重复感染 In recent years, some coastal shrimp farmed in Dalian and Liaoning Provinces have varying degrees of “red-legged disease” (yellow gill disease) each year, with a peak incidence from mid-August to mid-September, Into the shrimp died. For 3 years in a row, we isolated and purified 17 strains from the blood, hepatopancreas and gill of typical diseased shrimp heart, and proved to be pathogenic bacteria by infection test. The infected shrimp appear exactly the same symptoms as the naturally occurring shrimp. And repeated infections