上世纪80年代末以来,随着水产养殖规模的逐步扩大,养殖水体环境质量下降,种质退化,缺乏检疫的苗种频繁交流等不良因素使得养殖病害日趋严重,淡水鱼类出血病、河蟹颤抖病等重大病害的广泛流行,给水产养殖业造成了巨大损失,严重威胁着水产养殖业的健康发展。为对已知的重大病害进 Since the late 1980s, with the gradual expansion of aquaculture scale, the quality of aquaculture water has been degraded, the degradation of germplasm, the frequent exchange of seeds lacking in quarantine, and other unfavorable factors have made aquaculture diseases increasingly serious. Freshwater fish hemorrhagic disease, crab trembling The widespread prevalence of diseases and other major diseases has caused great losses to aquaculture and seriously threatened the healthy development of aquaculture. For the known major diseases into