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聚缩虫类病是河蟹育苗期的常见病,从抱卵蟹到大眼幼体都有不同程序的危害,感染速度快,死亡率高。 一、聚缩虫类的生物学特征 聚缩虫类属原生动物门,缘毛目,钟虫科的纤毛虫,包括聚缩虫、单缩虫、钟形虫、累枝虫等,以前者为最常见,聚缩虫柄分枝成群体,各个体的柄内机丝彼此相连,一受刺激整个群体收缩。单缩虫柄分枝也成群体,但柄内肌丝不相连接,仅受刺激的个体发生收缩。钟
Paclitaxel disease is a common disease in crab breeding, from crabs to big eyes have different hazards of the program, infection speed, high mortality. First, the biological characteristics of clustering insects Clustering insects is a protozoan door, margin hair head, beetles caterpillars, including polycyclic insects, monotypic insects, bell-shaped insects, such as tribulus, the former As the most common, trichomes branches into groups, the individual’s stem within the machine connected to each other, one by the stimulation of the entire population contraction. Monocular pest handle branches are also groups, but the handle does not connect the myofilament, only stimulated individuals contracted. bell