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Low-level environmental metal pollution is associated with altered gut microbiota of a wild rodent, the bank vole (Myodes glareolus)
Ecology and Genetics Unit, University of Oulu, Oulu, 90014, Finland; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, 40014, Finland.
Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, 40014, Finland.
Ecology and Genetics Unit, University of Oulu, Oulu, 90014, Finland; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, 40014, Finland; National Research Center for Radiation Medicine of the National Academy of Medical Science, Kyiv, 04050, Ukraine.
Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden.
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2021 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 790, article id 148224Article in journal (Refereed) Published
Abstract [en]

Mining and related industries are a major source of metal pollution. In contrast to the well-studied effects of exposure to metals on animal physiology and health, the impacts of environmental metal pollution on the gut microbiota of wild animals are virtually unknown. As the gut microbiota is a key component of host health, it is important to understand whether metal pollution can alter wild animal gut microbiota composition. Using a combination of 16S rRNA amplicon sequencing and quantification of metal levels in kidneys, we assessed whether multi-metal exposure (the sum of normalized levels of fifteen metals) was associated with changes in gut microbiota of wild bank voles (Myodes glareolus) from two locations in Finland. Exposure to increased metal load was associated with higher gut microbiota species diversity (α-diversity) and altered community composition (β-diversity), but not dispersion. Multi-metal exposure and increased levels of several metals (Cd, Hg, Pb and Se) were associated with differences in the abundance of microbial taxa, especially those within the families Clostridiales vadinBB60 group, Desulfovibrionaceae, Lachnospiraceae, Muribaculaceae and Ruminococcaceae. Our data indicate that even low-level metal pollution can affect the diversity of microbiota and be associated with deterministic differences in composition of host gut microbiota in wild animal populations. These findings highlight the need to study a broader range of metals and their cocktails that are more representative of the types of environmental exposure experienced by wild animals.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 790, article id 148224
Keywords [en]
metals, metal pollution, microbiome, environmental pollution, gut microbiota, wild animal microbiome
National Category
Geochemistry
Research subject
Applied Geochemistry
Identifiers
URN: urn:nbn:se:ltu:diva-84886DOI: 10.1016/j.scitotenv.2021.148224ISI: 000685284800016PubMedID: 34380250Scopus ID: 2-s2.0-85108119184OAI: oai:DiVA.org:ltu-84886DiVA, id: diva2:1560158
Funder
Swedish Research Council Formas, 329334; 326534; 329308; 268670; 324605; 2018-02427
Note

Validerad;2021;Nivå 2;2021-06-22 (beamah);

Forskningsfinansiärer: Kvantum Institute at the University of Oulu, BiodivERsA, Belmont Forum, Academy of Finland

Available from: 2021-06-03 Created: 2021-06-03 Last updated: 2021-08-31Bibliographically approved

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Rodushkin, Ilia

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