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宁夏阿拉善黄鼠疫源地鼠疫菌株有两个稳定的遗传型,即Leu~- Phe~- Ala~-和Leu~+ Phe~+Ala~+。两者均具有完全毒力,在动物鼠疫流行中均可分离到,都适于阿拉善黄鼠体内寄生和循环。但Leu~+型菌株对阿拉善黄鼠有更强的适应性和选择性。
There are two stable genotypes in the plague plague strains of A. xylostella in Ningxia, namely Leu ~ - Phe ~ - Ala ~ - and Leu ~ + Phe ~ + Ala ~ +. Both are fully virulent and can be isolated in the animal plague epidemics and are suitable for parasitism and circulation in vivo in Alzheimer’s rats. However, Leu ~ + strains are more adaptable and selective to Alzheimerism.