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Social and environmental transmission spread different sets of gut microbes in wild mice

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2024

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Raulo, Aura
Bürkner, Paul-Christian
Dale, Jarrah
Hanski, Eveliina
English, Holly M.
Lamberth, Curt
Firth, Josh A.
Coulson, Tim
Knowles, Sarah C. L.

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Nature Ecology & Evolution. Springer. 2024, 8(5), pp. 972-985. eISSN 2397-334X. Available under: doi: 10.1038/s41559-024-02381-0

Zusammenfassung

Gut microbes shape many aspects of organismal biology, yet how these key bacteria transmit among hosts in natural populations remains poorly understood. Recent work in mammals has emphasized either transmission through social contacts or indirect transmission through environmental contact, but the relative importance of different routes has not been directly assessed. Here we used a novel radio-frequency identification-based tracking system to collect long-term high-resolution data on social relationships, space use and microhabitat in a wild population of mice (Apodemus sylvaticus), while regularly characterizing their gut microbiota with 16S ribosomal RNA profiling. Through probabilistic modelling of the resulting data, we identify positive and statistically distinct signals of social and environmental transmission, captured by social networks and overlap in home ranges, respectively. Strikingly, microorganisms with distinct biological attributes drove these different transmission signals. While the social network effect on microbiota was driven by anaerobic bacteria, the effect of shared space was most influenced by aerotolerant spore-forming bacteria. These findings support the prediction that social contact is important for the transfer of microorganisms with low oxygen tolerance, while those that can tolerate oxygen or form spores may be able to transmit indirectly through the environment. Overall, these results suggest social and environmental transmission routes can spread biologically distinct members of the mammalian gut microbiota.

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570 Biowissenschaften, Biologie

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ISO 690RAULO, Aura, Paul-Christian BÜRKNER, Genevieve E. FINERTY, Jarrah DALE, Eveliina HANSKI, Holly M. ENGLISH, Curt LAMBERTH, Josh A. FIRTH, Tim COULSON, Sarah C. L. KNOWLES, 2024. Social and environmental transmission spread different sets of gut microbes in wild mice. In: Nature Ecology & Evolution. Springer. 2024, 8(5), pp. 972-985. eISSN 2397-334X. Available under: doi: 10.1038/s41559-024-02381-0
BibTex
@article{Raulo2024Socia-69983,
  year={2024},
  doi={10.1038/s41559-024-02381-0},
  title={Social and environmental transmission spread different sets of gut microbes in wild mice},
  number={5},
  volume={8},
  journal={Nature Ecology & Evolution},
  pages={972--985},
  author={Raulo, Aura and Bürkner, Paul-Christian and Finerty, Genevieve E. and Dale, Jarrah and Hanski, Eveliina and English, Holly M. and Lamberth, Curt and Firth, Josh A. and Coulson, Tim and Knowles, Sarah C. L.}
}
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