宿主特征和环境变化塑造了肠道微生物群的多样性,野生三脊椎背脊的多样性
Andreas Härer1, Emma Kurstjens2,3, Diana J Rennison4
1Department of Ecology, Behavior, & Evolution, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA. andreas_haerer@gmx.de.
Animal microbiome
|June 18, 2025
概括
宿主特征显著影响三脊鱼的肠道微生物群. 这项研究揭示了宿主形态和性别对微生物多样性的影响比环境更大,突出了复杂的宿主微生物群生态进化动态.
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:
- 肠道微生物群在宿主生态和进化中起着至关重要的作用.
- 对于在野生种群中塑造肠道微生物群的因素的理解有限.
- 宿主相关因素和环境因素的相对贡献需要进一步调查.
研究的目的:
- 调查宿主形态,性别,遗传分歧和环境如何影响三脊的肠道微生物群.
- 确定与宿主相关的环境因素对肠道微生物群组成的相对重要性.
- 探索微生物多样性的性别依赖差异.
主要方法:
- 分析了来自20个湖泊的三脊鱼的肠道微生物组成和多样性.
- 评估了宿主形态,性别,遗传分歧和环境特征的影响.
- 利用片序列变异 (ASV) 来表征微生物群落.
主要成果:
- 在种群中观察到的肠道微生物群组成和多样性的实质性变化.
- 主体特征,特别是形态,对细菌的α多样性的影响比环境因素更大.
- 弱定义的核心微生物群和有限的ASV共享表明了个性化的肠道微生物群组成.
- 在微生物多样性中检测到取决于性别的差异.
结论:
- 与宿主相关的因素,包括形态和性别,显著影响了三脊鱼的肠道微生物群动态.
- 与宿主特征相比,环境因素在影响肠道微生物群中的作用较小.
- 突出了宿主生物体,它们的微生物群和环境之间的复杂相互作用,这对生态进化研究有影响.
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