纤毛虫病是秋季河蟹徜徉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与河蟹体表、附肢、鳃部等部位所引起。多发生于秋季鱼蟹混养塘,幼蟹、成蟹都能感染。由于鱼蟹放养密度大、夏季头饵施肥过多,排泄无长期累积,换水次数少等原因,导致水过肥有机质 Ciliates disease is a parasitic disease that occurs in autumn crabs, the pathogens are caused by the parasitism of ciliates such as Toxoplasma gondii, bell’s beetles, . Occurred in the fall fish crab polyculture ponds, crabs, crabs can be infected. Due to the large stocking density of fish and crabs, too much summer bait fertilizer, long-term accumulation of excretion, less water change and other reasons, resulting in excessive water organic matter