Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants
Recent decline of sea ice habitat has coincided with increased use of land by polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), which may alter the risks of exposure to pathogens and contaminants. We assayed blood samples from SB polar bears to assess prior exposure to the pathogens...
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ftpubmed:oai:pubmedcentral.nih.gov:5643432 2023-05-15T14:57:14+02:00 Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants Atwood, Todd C. Duncan, Colleen Patyk, Kelly A. Nol, Pauline Rhyan, Jack McCollum, Matthew McKinney, Melissa A. Ramey, Andrew M. Cerqueira-Cézar, Camila K. Kwok, Oliver C. H. Dubey, Jitender P. Hennager, Steven 2017-10-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643432/ http://www.ncbi.nlm.nih.gov/pubmed/29038498 https://doi.org/10.1038/s41598-017-13496-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643432/ http://www.ncbi.nlm.nih.gov/pubmed/29038498 http://dx.doi.org/10.1038/s41598-017-13496-9 © The Author(s) 2017 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/s41598-017-13496-9 2017-10-22T00:16:33Z Recent decline of sea ice habitat has coincided with increased use of land by polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), which may alter the risks of exposure to pathogens and contaminants. We assayed blood samples from SB polar bears to assess prior exposure to the pathogens Brucella spp., Toxoplasma gondii, Coxiella burnetii, Francisella tularensis, and Neospora caninum, estimate concentrations of persistent organic pollutants (POPs), and evaluate risk factors associated with exposure to pathogens and POPs. We found that seroprevalence of Brucella spp. and T. gondii antibodies likely increased through time, and provide the first evidence of exposure of polar bears to C. burnetii, N. caninum, and F. tularensis. Additionally, the odds of exposure to T. gondii were greater for bears that used land than for bears that remained on the sea ice during summer and fall, while mean concentrations of the POP chlordane (ΣCHL) were lower for land-based bears. Changes in polar bear behavior brought about by climate-induced modifications to the Arctic marine ecosystem may increase exposure risk to certain pathogens and alter contaminant exposure pathways. Text Arctic Beaufort Sea Sea ice Ursus maritimus PubMed Central (PMC) Arctic Scientific Reports 7 1 |
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Article Atwood, Todd C. Duncan, Colleen Patyk, Kelly A. Nol, Pauline Rhyan, Jack McCollum, Matthew McKinney, Melissa A. Ramey, Andrew M. Cerqueira-Cézar, Camila K. Kwok, Oliver C. H. Dubey, Jitender P. Hennager, Steven Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
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Article |
description |
Recent decline of sea ice habitat has coincided with increased use of land by polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), which may alter the risks of exposure to pathogens and contaminants. We assayed blood samples from SB polar bears to assess prior exposure to the pathogens Brucella spp., Toxoplasma gondii, Coxiella burnetii, Francisella tularensis, and Neospora caninum, estimate concentrations of persistent organic pollutants (POPs), and evaluate risk factors associated with exposure to pathogens and POPs. We found that seroprevalence of Brucella spp. and T. gondii antibodies likely increased through time, and provide the first evidence of exposure of polar bears to C. burnetii, N. caninum, and F. tularensis. Additionally, the odds of exposure to T. gondii were greater for bears that used land than for bears that remained on the sea ice during summer and fall, while mean concentrations of the POP chlordane (ΣCHL) were lower for land-based bears. Changes in polar bear behavior brought about by climate-induced modifications to the Arctic marine ecosystem may increase exposure risk to certain pathogens and alter contaminant exposure pathways. |
format |
Text |
author |
Atwood, Todd C. Duncan, Colleen Patyk, Kelly A. Nol, Pauline Rhyan, Jack McCollum, Matthew McKinney, Melissa A. Ramey, Andrew M. Cerqueira-Cézar, Camila K. Kwok, Oliver C. H. Dubey, Jitender P. Hennager, Steven |
author_facet |
Atwood, Todd C. Duncan, Colleen Patyk, Kelly A. Nol, Pauline Rhyan, Jack McCollum, Matthew McKinney, Melissa A. Ramey, Andrew M. Cerqueira-Cézar, Camila K. Kwok, Oliver C. H. Dubey, Jitender P. Hennager, Steven |
author_sort |
Atwood, Todd C. |
title |
Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
title_short |
Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
title_full |
Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
title_fullStr |
Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
title_full_unstemmed |
Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants |
title_sort |
environmental and behavioral changes may influence the exposure of an arctic apex predator to pathogens and contaminants |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643432/ http://www.ncbi.nlm.nih.gov/pubmed/29038498 https://doi.org/10.1038/s41598-017-13496-9 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Sea ice Ursus maritimus |
genre_facet |
Arctic Beaufort Sea Sea ice Ursus maritimus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643432/ http://www.ncbi.nlm.nih.gov/pubmed/29038498 http://dx.doi.org/10.1038/s41598-017-13496-9 |
op_rights |
© The Author(s) 2017 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-017-13496-9 |
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Scientific Reports |
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7 |
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1 |
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