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固着类纤毛虫病的病原种类很多,最常见的为聚缩虫、独缩虫、累枝虫、钟虫等。聚缩虫、独缩虫、累枝虫都是群体生活,柄呈树枝状分枝。聚缩虫伸缩时整个群体一致伸缩,独缩虫群体中各个体单独伸缩,累枝虫不能伸缩,钟虫不成群体,伸缩时呈弹簧状。固着类纤毛虫病、壳吸管虫病及莲蓬虫病在育苗期间多发生在中、后期,以5月下旬较为严重；在养成期间,主要发生在高温季节,即7月下旬至9月中旬；越冬亲虾有时也患此病,但一般不严重。虫体少量固着时, 肉眼看不出症状,危害也不严重。虫体大量固着时,患病幼体肉眼可见体表有绒毛状物,行动迟缓,摄食困难, 重者停止发育和蜕皮,最终死亡。镜检时可见幼体体表或附肢上附生着大量虫体,患病成体可见虫体布满对虾
Immune-fixing fibroid disease many types of pathogens, the most common poly clustering insects, monogamous, tribulus, clockworms and so on. Polygonatum, monogamous, trimeresurus are group life, the handle was dendritic branches. Retractable telescopic telescopic unison the whole group, individual contractors in the individual groups of individuals retractable, Tillers can not stretch, not a group of clockworms, telescopic was spring-like. Ciliate ciliates, shell echinococcosis and pollination often occur in the mid and late stages of nursery, which are more serious in late May. During the development period, they mainly occur in the hot season, that is, from late July to mid-September ; Wintering shrimp sometimes suffer from the disease, but generally not serious. A small amount of insects fixed, the naked eye can not see the symptoms, the harm is not serious. Insect mass fixation, the diseased larvae visible to the naked eye surface has a villi, slow, feeding difficulties, severe development and molting to stop the final death. Microscopic examination can be seen on the surface of young body or appendages attached to a large number of parasites, sick adult body can be seen parasites shrimp