中华绒螯蟹(Eriocheir sinensis),俗称河蟹,为我国特有的名贵水产品,近年来蓬勃发展,产生了很高的经济效益。与此同时,养殖病害问题已成为制约养殖生产的主要因素。1994年在江苏养殖成蟹池塘首次发现了河蟹“颤抖病”,1995年后迅速蔓延,至1998年已扩大到上海、福建、江西、浙江以及辽宁等地,几乎覆 Eriocheir sinensis (Eriocheir sinensis), commonly known as crab, is a rare and valuable aquatic product unique to China. It has been booming in recent years and has produced very high economic benefits. At the same time, the problem of farming diseases has become a major factor restricting aquaculture production. In 1994, crabs were first found in crab ponds in Jiangsu Province. After 1995, they spread rapidly to Shanghai, Fujian, Jiangxi, Zhejiang and Liaoning provinces.