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近年来，在水产养殖过程中，每到夏季气温升高，就开始出现死鱼现象。当气温达到35℃以上时便出现死鱼高峰(主要危害鲢、鳙等)，严重时，麦穗鱼都可感染。1 流行情况该病流行广、周期长、死亡率高，是一种急性传染病。1997～1998年长沙市郊50％的精养池塘遭受损失。2 病原及病
In recent years, during the aquaculture process, the phenomenon of dead fish begins to occur every summer when the temperature rises. When the temperature reaches above 35 ℃, the dead fish will appear the peak (the main risk of silver carp, bighead carp, etc.), serious, wheat ears can be infected. A prevalence of the disease is widespread, long cycle, high mortality, is an acute infectious disease. From 1997 to 1998, 50% of the intensive ponds in the outskirts of Changsha suffered losses. 2 pathogen and disease