蜜蜂寄生虫的宿主转换导致了共生体多样化
1Honeybee Research Institute, Jiangxi Agricultural University, Zhimin Ave. 1101, Nanchang 330045, China.
Journal of invertebrate pathology
|January 25, 2024
概括
蜜蜂的寄生虫瓦罗亚破坏性虫在转换宿主后分化为不同的种群,改变了它们的相关微生物群落. 这些虫相关的微生物在很大程度上是致病性和抗生素耐药的.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 微生物学 微生物学
背景情况:
- 主体寄生虫共同进化通常涉及长期相关物种之间的相互遗传变化.
- 原产于亚洲蜜蜂 (Apis cerana) 的寄生虫虫Varroa destructor已经成功感染了欧洲蜜蜂 (Apis mellifera),导致大量的殖民地损失.
- 新宿主中的虫感染可以推动进化分歧并改变相关的微生物群落.
研究的目的:
- 调查宿主切换对与瓦罗亚破坏性虫相关的微生物群落的影响.
- 为了比较来自本地宿主 (Apis cerana) 和新宿主 (Apis mellifera) 的虫的微生物群.
- 描述菌相关微生物的功能特征,如抗生素耐药性.
主要方法:
- 在两种不同的蜜蜂宿主物种的瓦罗亚破坏者虫中对微生物群落的比较分析.
- 用DNA测序来识别细菌种群和评估α多样性.
- 生物信息分析用于比较微生物社区结构并识别特定的细菌物种.
主要成果:
- 侵袭欧洲蜜蜂 (Apis mellifera) 的瓦罗亚破坏性虫形成了与亚洲本土蜜蜂 (Apis cerana) 相比不同的种群.
- 从两个宿主种群中观察到与有关的微生物群的显著差异.
- 与虫相关的微生物主要是致病性,并表现出抗生素耐药性,与蜜蜂微生物群不同,尽管注意到了一些像Klebsiella pneumoniae这样的共享种群.
结论:
- 瓦罗亚破坏性虫的宿主切换导致了具有不同微生物群的遗传特异性虫种群的形成.
- 与虫相关的微生物群的特点是致病性和抗生素耐药的细菌,这表明与虫有着专门的关系.
- 虫和它们的蜜蜂宿主之间存在横向基因转移和微生物交换的潜力,影响蜂群健康.
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