河蟹抖抖病,发病蟹一龄、二龄都有,但以二龄蟹居多,约占70%以上。病蟹在发病初期表现为食欲下降,严重时完全拒食,一般爬到池边浅水处或伏在水草上,肢体抖个不停,继而死亡。从发病至死亡的时间约3—7天,检查病蟹发现鳃丝苍白水肿,有少量蟹黄,胃内无食物,手压腹部一般无粪便流出 Crab shaking disease, the incidence of crab age, the second age has, but most of the second age crab, accounting for more than 70%. Disease crab in the early onset of appetite decreased performance, complete refusal to eat when the general climb to the pool shallow water or volt grass, limbs shaking, and then died. From onset to death time of about 3-7 days, check the diseased crab gill found pale edema, a small amount of crab yellow, no food in the stomach, hand pressure abdomen generally no excrement