病毒性神经坏死症是牙鲆、鲈鱼、石斑鱼、石鲷等海水鱼类种苗生产中流行的疾病。 一、症状及病理 病鱼无力地漂浮水面,不愿索饵,旋转或盘旋后下沉死亡。出现这种异常状况后1—2周内全部死亡。从表面上看不出明显病变,但从组织学上看,中枢神经组织或网膜组织神经细胞坏死。在这些细胞的 Viral nervous necrosis is flounder, perch, grouper, stone bream and other marine fish species popular in the production of diseases. First, the symptoms and pathology Disease fish floating weakly, unwilling to bait, rotating or hovering after the death of death. All such deaths occurred within 1-2 weeks after such abnormalities occurred. On the surface can not see obvious lesions, but histologically, central nervous tissue or omentum nerve cell necrosis. In these cells