Low-level environmental metal pollution is associated with altered gut microbiota of a wild rodent, the bank vole (Myodes glareolus).

Autor: Brila I; Ecology and Genetics Unit, University of Oulu, Oulu 90014, Finland; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä 40014, Finland. Electronic address: Ilze.Brila@oulu.fi., Lavrinienko A; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä 40014, Finland., Tukalenko E; 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., Ecke F; Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden., Rodushkin I; Division of Geosciences, Luleå University of Technology, 971 87 Luleå, Sweden; ALS Laboratory Group, ALS Scandinavia AB, Aurorum 10, 977 75 Luleå, Sweden., Kallio ER; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä 40014, Finland; School of Resource Wisdom, University of Jyväskylä, Jyväskylä 40014, Finland., Mappes T; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä 40014, Finland., Watts PC; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä 40014, Finland.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2021 Oct 10; Vol. 790, pp. 148224. Date of Electronic Publication: 2021 Jun 02.
DOI: 10.1016/j.scitotenv.2021.148224
Abstrakt: 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.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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