7月份以来,高邮、江都地区陆续发生罗氏沼虾急性死亡现象,具体症状:病虾靠边、侧卧、甲壳较软(多数为刚蜕壳的虾),附肢完整、体表无创伤,鳃上有蓝绿藻附着,体色发黑、部分虾的体节肌肉有白浊现象。死虾多数是软壳虾,死亡量每个塘口从几斤到几十斤不等,特别是动网拉虾后死亡量能 Since July, the acute death of Macrobrachium rosenbergii occurs in Gaoyou and Jiangdu areas. The specific symptoms are as follows: the sick shrimp is near the edge, lying side by side, the carapace is relatively soft (mostly shrimp just exfoliated), the appendages are intact, the surface is non-invasive, There are blue-green algae attached to the body color black, part of the shrimp muscle stenosis. Dead shrimp are mostly soft-shelled shrimp, the death of each pond from a few pounds to tens of pounds range, in particular, the amount of death after moving the net pull shrimp