Department of Entomology, College of Plant Protection, Yangzhou University, Yangzhou, China.
Institute for the Control of the Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing, China.
mSphere. 2024 Aug 28;9(8):e0038624. doi: 10.1128/msphere.00386-24. Epub 2024 Aug 6.
Arthropods harbor complex microbiota that play a pivotal role in host fitness. While multiple factors, like host species and diet, shape microbiota in arthropods, their impact on community assembly in wild insects remains largely unknown. In this study, we surveyed bacterial and fungal community assembly in nine sympatric wild insect species that share a common citrus fruit diet. Source tracking analysis suggested that these insects acquire some bacteria and fungi from the citrus fruit with varying degrees. Although sharing a common diet led to microbiota convergence, the diversity, composition, and network of both bacterial and fungal communities varied significantly among surveyed insect groups. Null model analysis indicated that stochastic processes, particularly dispersal limitation and drift, are primary drivers of structuring insect bacterial and fungal communities. Importantly, the influence of each community assembly process varied strongly depending on the host species. Thus, we proposed a speculative view that the host specificity of the microbiome and mycobiome assembly is widespread in wild insects despite sharing the same regional species pool. Overall, this research solidifies the importance of host species in shaping microbiomes and mycobiomes, providing novel insights into their assembly mechanisms in wild insects.
Since the microbiome has been shown to impact insect fitness, a mechanistic understanding of community assembly has potentially significant applications but remains largely unexplored. In this paper, we investigate bacterial and fungal community assembly in nine sympatric wild insect species that share a common diet. The main findings indicate that stochastic processes drive the divergence of microbiomes and mycobiomes in nine sympatric wild insect species. These findings offer novel insights into the assembly mechanisms of microbiomes and mycobiomes in wild insects.
节肢动物体内栖息着复杂的微生物群落，这些微生物在宿主健康中起着关键作用。尽管宿主物种和饮食等多种因素会影响节肢动物体内的微生物群，但它们对野生昆虫群落组装的影响在很大程度上仍不清楚。在这项研究中，我们调查了九种共生的野生昆虫物种的细菌和真菌群落组装，这些昆虫物种共享一种常见的柑橘类水果饮食。源追踪分析表明，这些昆虫以不同程度从柑橘水果中获得一些细菌和真菌。尽管共享共同的饮食导致了微生物群的趋同，但调查的昆虫群体之间的细菌和真菌群落的多样性、组成和网络差异显著。零模型分析表明，随机过程，特别是扩散限制和漂移，是昆虫细菌和真菌群落结构的主要驱动因素。重要的是，每个群落组装过程的影响强烈取决于宿主物种。因此，我们提出了一种推测性观点，即在野生昆虫中，尽管共享同一区域的物种库，但微生物组和真菌组的组装的宿主特异性是普遍存在的。总的来说，这项研究强调了宿主物种在塑造微生物组和真菌组方面的重要性，为了解它们在野生昆虫中的组装机制提供了新的见解。
由于微生物组已被证明会影响昆虫的健康，因此对群落组装的机制理解具有潜在的重要应用，但在很大程度上仍未得到探索。在本文中，我们调查了九种共享共同饮食的共生野生昆虫物种的细菌和真菌群落组装。主要发现表明，随机过程驱动了九种共生野生昆虫物种中微生物组和真菌组的发散。这些发现为了解野生昆虫中微生物组和真菌组的组装机制提供了新的见解。
