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环境和人口对木乃伊鸟 (Fundulus heteroclitus) 肠道微生物群的影响

Lei Ma¹, Mark E Hahn², Sibel I Karchner²

¹Marine Chemistry & Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.

Microbiology spectrum

|January 27, 2025

概括

环境污染显著改变了木乃伊鱼 (Fundulus heteroclitus) 的肠道微生物组. 息地条件,而不是遗传,是这些微生物群落变化的主要驱动因素,这些微生物群落变化是暴露在污染物中的鱼类.

科学领域:

环境科学环境科学
微生物学微生物学
生态毒理学生态毒理学

背景情况:

鸟 (Fundulus heteroclitus) 对芳香碳化合物具有进化的耐受性,与基碳化合物受体 (AHR) 路径调节有关.
AHR的激活会影响肠道微生物群落,特别是与像PCB-126这样的二氧化类化合物.

研究的目的:

调查人口起源和PCB-126暴露对木乃伊肠道微生物群的影响.
区分环境和遗传影响对木乃伊的肠道微生物群之间的区别.

主要方法:

从受 PCB 污染 (新贝德福德港) 和较少污染 (斯科顿溪) 的地点采集野生木乃伊海样本.
来自两种种群的实验室养的F2代鱼的分析.
细菌和古生物学小子单元核糖体RNA基因的幅测序,以表征肠道微生物.

主要成果:

来自PCB污染地区的野生鱼类与来自较少污染地区的鱼类相比,表现出更高的肠道微生物α和β多样性.
这些多样性差异在实验室培养的F2鱼类中没有,这表明环境影响.
野生 (以Vibrionaceae为主) 和实验室养殖 (以Enterococcaceae为主) 鱼类的微生物组成不同.

结论:

鸟息地和环境条件对肠道微生物组合的影响比人口或遗传因素更大.
这项研究强调了木乃伊作为理解受污染的生态系统中宿主-环境-微生物组动态的模型.

关键词:

动物微生物群是动物的微生物群.鱼类鱼类鱼类鱼类的鱼类鱼类.微生物组是一个微生物组.一个的michogog

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