某些粘孢子虫在其生活史中有中间寄主。
Some of the Myxosporidia have middle hosts in their life cycles.
长期利用一种中间寄主因蜂种营养来源单一，导致蜂种生命力下降。
The main cause of population decline include: using the same kind of host, inbreeding, and lower ratio of bethylid and host.
本研究共分三部分，即管氏肿腿蜂对重要的人工扩繁中间寄主黄粉甲蛹寄生行为的研究；
In this paper, embryonic development, parasitizing behavior of the parasitical insect and population rejuvenation after successive rearing with the pupa of Tenebrio molitor were studied.
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