几种国际间流行,发病率高、危害性较大的鱼类病毒病介绍如下: 鲤鱼春季病毒病(Springviremia of carp) SVC病毒是已知流行于欧洲的鲤鱼类病毒,鲤鱼发病于13℃—20℃春季水温上升时期,17℃发病最盛。当水温超过20℃时则衰弱。稚鱼和幼鱼不患此病。鲤鱼发病的情况依水温的高低而不同。一旦患上此病,2—3周死亡率便达 Several international endemic, high-incidence and high-risk fish viruses are described below: Springviremia of carp The SVC virus is a carp virus known to be circulating in Europe, and carp is at 13 ° C - 20 ℃ Spring water temperature rise period, 17 ℃ incidence peak. When the water temperature exceeds 20 ℃ when the weak. Juveniles and juveniles do not suffer from the disease. The incidence of carp according to the level of water temperature and different. Once the disease, 2-3 weeks of death rate reached