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mi feng bing li xue yan jiu gai kuang
Author(s): 
Pages: 20-21
Year: Issue:  5
Journal: Apiculture of China

Keyword:  蜜蜂幼虫病理学蜂群病原体潜伏期二阶段病征蜂王幼虫病防治方法;
Abstract: <正> 由数以千计的工蜂、数以百计的雄蜂和蜂王组成的蜂群,如同一个完整的生物体。蜜蜂的病理病变,并不在于个体的变化,而是群体的变化。从个体被侵染开始直至蜂群出现病征为止,可以分为两个阶段:第一阶段,潜伏期,在此期间,个别或者少数蜜蜂个体开始出现病征、并有死亡,第二阶段蜂群里有20~30%蜜蜂染病,此时蜂群表现典
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