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タイトル: Core species and interactions prominent in fish-associated microbiome dynamics
著者: Yajima, Daii
Fujita, Hiroaki
Hayashi, Ibuki
Shima, Genta
Suzuki, Kenta
Toju, Hirokazu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-3362-3285 (unconfirmed)
著者名の別形: 矢島, 大意
藤田, 博昭
林, 息吹
島, 玄太
鈴木, 健大
東樹, 宏和
キーワード: Alternative stable states
Biodiversity
Biological communities
Community collapse
Community stability
Edwardsiella
Dysbiosis
Keystone species
Microbiome dynamics
Nonlinear dynamics
発行日: 2023
出版者: Springer Nature
BMC
誌名: Microbiome
巻: 11
論文番号: 53
抄録: [Background] In aquatic ecosystems, the health and performance of fish depend greatly on the dynamics of microbial community structure in the background environment. Nonetheless, finding microbes with profound impacts on fish’s performance out of thousands of candidate species remains a major challenge. [Methods] We examined whether time-series analyses of microbial population dynamics could illuminate core components and structure of fish-associated microbiomes in the background (environmental) water. By targeting eel-aquaculture-tank microbiomes as model systems, we reconstructed the population dynamics of the 9605 bacterial and 303 archaeal species/strains across 128 days. [Results] Due to the remarkable increase/decrease of constituent microbial population densities, the taxonomic compositions of the microbiome changed drastically through time. We then found that some specific microbial taxa showed a positive relationship with eels’ activity levels even after excluding confounding effects of environmental parameters (pH and dissolved oxygen level) on population dynamics. In particular, a vitamin-B12-producing bacteria, Cetobacterium somerae, consistently showed strong positive associations with eels’ activity levels across the replicate time series of the five aquaculture tanks analyzed. Network theoretical and metabolic modeling analyses further suggested that the highlighted bacterium and some other closely-associated bacteria formed “core microbiomes” with potentially positive impacts on eels. [Conclusions] Overall, these results suggest that the integration of microbiology, ecological theory, and network science allows us to explore core species and interactions embedded within complex dynamics of fish-associated microbiomes.
記述: 魚の健康において鍵となる「コア微生物叢」 --ウナギ養殖水槽内の細菌叢動態--. 京都大学プレスリリース. 2023-03-30.
著作権等: © The Author(s) 2023.
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
URI: http://hdl.handle.net/2433/281533
DOI(出版社版): 10.1186/s40168-023-01498-x
PubMed ID: 36941627
関連リンク: https://www.kyoto-u.ac.jp/ja/research-news/2023-03-30-3
出現コレクション:学術雑誌掲載論文等

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