The relative importance of host control, environmental effects and stochasticity in the assemblage of host‐associated microbiomes is being debated. We analysed the microbiome among fly populations that were sampled across Europe by the European Drosophila Population Genomics Consortium (DrosEU). In order to better understand the structuring principles of the natural D. melanogaster microbiome, we combined environmental data on climate and food‐substrate with dense genomic data on host populations and microbiome profiling. Food‐substrate, temperature, and host population structure correlated with microbiome structure. Microbes, whose abundance was co‐structured with host populations, also differed in abundance between flies and their substrate in an independent survey. This finding suggests common, host‐related structuring principles of the microbiome on different spatial scales.

中文翻译：

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果蝇果蝇微生物组在大陆范围以及宿主和底物之间的常见结构原理。

在宿主相关微生物群落的集合中，宿主控制，环境影响和随机性的相对重要性正在争论中。我们分析了欧洲果蝇种群基因组学联盟（DrosEU）在整个欧洲采样的果蝇种群中的微生物组。为了更好地理解自然D的结构原理。忧郁症微生物组，我们将气候和食物基质的环境数据与寄主种群和微生物组图谱的密集基因组数据结合在一起。食物底物，温度和寄主种群结构与微生物组结构相关。在一次独立调查中，微生物的丰度与寄主种群共同构成，其蝇及其基质之间的丰度也有所不同。这一发现提示了不同空间尺度上微生物组的通用的，与宿主相关的结构化原理。