纤毛虫病是秋季河蟹常发生的一种寄生虫病,病原体是由累枝虫、钟形虫、斜管虫等纤毛虫类虫体寄生于河蟹体表、附肢、鳃等部位所产生的。多发生于秋季鱼蟹混养塘,幼蟹、成蟹都能感染。一、主要症状病蟹体表长有许多黄绿色或棕色绒毛状物,体表、附肢有滑腻感。病蟹食欲下降,甚至不食,蟹体消瘦,行动迟缓,对外来刺激 Ciliates is a parasitic disease that often occurs in crabs in the fall. The pathogens are caused by the parasites of ciliates such as Toxoplasmosis, . Occurred in the fall fish crab polyculture ponds, crabs, crabs can be infected. First, the main symptoms of crab body surface length of many yellow-green or brown fluffy body surface, appendages have a creamy feel. Crab loss of appetite, or even eat, crab body weight loss, slow, on external stimuli