Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions
Gut microbiomes were analyzed by 16S rRNA gene metabarcoding for polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), where sea ice loss has led to increased use of land-based food resources by bears, and from East Greenland (EG), where persistent sea ice has allowed hunting of ice-ass...
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ftpubmed:oai:pubmedcentral.nih.gov:8752607 2023-05-15T15:40:33+02:00 Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions Franz, Megan Whyte, Lyle Atwood, Todd C. Laidre, Kristin L. Roy, Denis Watson, Sophie E. Góngora, Esteban McKinney, Melissa A. 2022-01-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8752607/ https://doi.org/10.1038/s41598-021-04340-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8752607/ http://dx.doi.org/10.1038/s41598-021-04340-2 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access 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. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2022 ftpubmed https://doi.org/10.1038/s41598-021-04340-2 2022-01-16T01:57:58Z Gut microbiomes were analyzed by 16S rRNA gene metabarcoding for polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), where sea ice loss has led to increased use of land-based food resources by bears, and from East Greenland (EG), where persistent sea ice has allowed hunting of ice-associated prey nearly year-round. SB polar bears showed a higher number of total (940 vs. 742) and unique (387 vs. 189) amplicon sequence variants and higher inter-individual variation compared to EG polar bears. Gut microbiome composition differed significantly between the two subpopulations and among sex/age classes, likely driven by diet variation and ontogenetic shifts in the gut microbiome. Dietary tracer analysis using fatty acid signatures for SB polar bears showed that diet explained more intrapopulation variation in gut microbiome composition and diversity than other tested variables, i.e., sex/age class, body condition, and capture year. Substantial differences in the SB gut microbiome relative to EG polar bears, and associations between SB gut microbiome and diet, suggest that the shifting foraging habits of SB polar bears tied to sea ice loss may be altering their gut microbiome, with potential consequences for nutrition and physiology. Text Beaufort Sea East Greenland Greenland Sea ice Ursus maritimus PubMed Central (PMC) Bears Gut ENVELOPE(-62.998,-62.998,58.700,58.700) Greenland Scientific Reports 12 1 |
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Article Franz, Megan Whyte, Lyle Atwood, Todd C. Laidre, Kristin L. Roy, Denis Watson, Sophie E. Góngora, Esteban McKinney, Melissa A. Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
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Article |
description |
Gut microbiomes were analyzed by 16S rRNA gene metabarcoding for polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), where sea ice loss has led to increased use of land-based food resources by bears, and from East Greenland (EG), where persistent sea ice has allowed hunting of ice-associated prey nearly year-round. SB polar bears showed a higher number of total (940 vs. 742) and unique (387 vs. 189) amplicon sequence variants and higher inter-individual variation compared to EG polar bears. Gut microbiome composition differed significantly between the two subpopulations and among sex/age classes, likely driven by diet variation and ontogenetic shifts in the gut microbiome. Dietary tracer analysis using fatty acid signatures for SB polar bears showed that diet explained more intrapopulation variation in gut microbiome composition and diversity than other tested variables, i.e., sex/age class, body condition, and capture year. Substantial differences in the SB gut microbiome relative to EG polar bears, and associations between SB gut microbiome and diet, suggest that the shifting foraging habits of SB polar bears tied to sea ice loss may be altering their gut microbiome, with potential consequences for nutrition and physiology. |
format |
Text |
author |
Franz, Megan Whyte, Lyle Atwood, Todd C. Laidre, Kristin L. Roy, Denis Watson, Sophie E. Góngora, Esteban McKinney, Melissa A. |
author_facet |
Franz, Megan Whyte, Lyle Atwood, Todd C. Laidre, Kristin L. Roy, Denis Watson, Sophie E. Góngora, Esteban McKinney, Melissa A. |
author_sort |
Franz, Megan |
title |
Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
title_short |
Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
title_full |
Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
title_fullStr |
Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
title_full_unstemmed |
Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
title_sort |
distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8752607/ https://doi.org/10.1038/s41598-021-04340-2 |
long_lat |
ENVELOPE(-62.998,-62.998,58.700,58.700) |
geographic |
Bears Gut Greenland |
geographic_facet |
Bears Gut Greenland |
genre |
Beaufort Sea East Greenland Greenland Sea ice Ursus maritimus |
genre_facet |
Beaufort Sea East Greenland Greenland Sea ice Ursus maritimus |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8752607/ http://dx.doi.org/10.1038/s41598-021-04340-2 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access 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. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-04340-2 |
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Scientific Reports |
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12 |
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