河蟹养殖由于投资少,见效快,经济收入高,受到广大农户的欢迎。但在河蟹的养殖过程中,往往会发生病害而造成河蟹死亡,给农民养殖户带来很大经济损失。下面就谈谈河蟹几种常见的病害及其防治方法。1.聚缩虫病。(1)症状与病因:在蟹苗或幼蟹体表、鳃部寄生聚缩虫,寄生严重时可引起死亡。一般多发生于蟹苗期,全身寄生时,可使蟹苗无力蜕 Crab farming due to less investment, quick, high economic income, welcomed by the majority of farmers. However, during the breeding process of crabs, the disease often leads to death of crabs and brings great economic losses to farmers. Here are some common crab and disease control methods. 1. Squamous disease. (1) Symptoms and causes: in the crab or crab body surface, gill parasitic polygamy, parasitic serious can cause death. Generally occurs in the crab seedling stage, the whole body parasitic, can weaken the crab seedlings