Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters
Mercury is found in Arctic marine mammals that are important in the diet of northern Indigenous peoples. The objectives of the present long‐term study, spanning a 45‐yr period, were to 1) investigate the temporal trends of total mercury (THg; muscle and liver) and selenium (Se; liver) in ringed seal...
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2020
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7756774/ http://www.ncbi.nlm.nih.gov/pubmed/33025637 https://doi.org/10.1002/etc.4865 |
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ftpubmed:oai:pubmedcentral.nih.gov:7756774 2023-05-15T14:31:41+02:00 Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters Houde, Magali Taranu, Zofia E. Wang, Xiaowa Young, Brent Gagnon, P. Ferguson, Steve H. Kwan, Michael Muir, Derek C.G. 2020-10-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7756774/ http://www.ncbi.nlm.nih.gov/pubmed/33025637 https://doi.org/10.1002/etc.4865 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7756774/ http://www.ncbi.nlm.nih.gov/pubmed/33025637 http://dx.doi.org/10.1002/etc.4865 © 2020 Her Majesty the Queen in Right of Canada. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Reproduced with the permission of the Minister of Fisheries and Oceans Canada This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. CC-BY-NC-ND Environ Toxicol Chem Environmental Toxicology Text 2020 ftpubmed https://doi.org/10.1002/etc.4865 2021-01-03T01:40:09Z Mercury is found in Arctic marine mammals that are important in the diet of northern Indigenous peoples. The objectives of the present long‐term study, spanning a 45‐yr period, were to 1) investigate the temporal trends of total mercury (THg; muscle and liver) and selenium (Se; liver) in ringed seals (Pusa hispida) from different regions of the Canadian Arctic; and 2) examine possible relationships with age, diet, and climate parameters such as air temperature, precipitation, climatic indices, and ice‐coverage. Ringed seals were collected by hunters in northern communities in the Beaufort Sea, Central Arctic, Eastern Baffin Island, Hudson Bay, and Ungava/Nunatsiavut regions (Canada) between 1972 and 2017. Mercury levels did not change through time in seal liver, but THg levels in muscle decreased in seals from Hudson Bay (−0.91%/yr) and Ungava/Nunatsiavut (−1.30%/yr). Carbon stable isotope values in seal muscle decreased significantly through time in 4 regions. Selenium‐to‐THg ratios were found to be >1 for all years and regions. Variation partitioning analyses across regions indicated that THg trends in seals were mostly explained by age (7.3–21.7%), climate parameters (3.5–12.5%), and diet (up to 9%); climate indices (i.e., Arctic and North Atlantic Oscillations, Pacific/North American pattern) explained the majority of the climate portion. The THg levels had a positive relationship with Arctic Oscillation for multiple regions. Associations of THg with air temperature, total precipitation, and sea‐ice coverage, as well as with North Atlantic Oscillation and Pacific/North American pattern were found to vary with tissue type and geographical area. Environ Toxicol Chem 2020;39:2462–2474. © 2020 Her Majesty the Queen in Right of Canada. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Reproduced with the permission of the Minister of Fisheries and Oceans Canada. Text Arctic marine mammals Arctic Baffin Island Baffin Beaufort Sea Central Arctic Hudson Bay North Atlantic North Atlantic oscillation Pusa hispida Sea ice PubMed Central (PMC) Arctic Baffin Island Canada Hudson Hudson Bay Pacific Environmental Toxicology and Chemistry 39 12 2462 2474 |
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English |
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Environmental Toxicology |
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Environmental Toxicology Houde, Magali Taranu, Zofia E. Wang, Xiaowa Young, Brent Gagnon, P. Ferguson, Steve H. Kwan, Michael Muir, Derek C.G. Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
topic_facet |
Environmental Toxicology |
description |
Mercury is found in Arctic marine mammals that are important in the diet of northern Indigenous peoples. The objectives of the present long‐term study, spanning a 45‐yr period, were to 1) investigate the temporal trends of total mercury (THg; muscle and liver) and selenium (Se; liver) in ringed seals (Pusa hispida) from different regions of the Canadian Arctic; and 2) examine possible relationships with age, diet, and climate parameters such as air temperature, precipitation, climatic indices, and ice‐coverage. Ringed seals were collected by hunters in northern communities in the Beaufort Sea, Central Arctic, Eastern Baffin Island, Hudson Bay, and Ungava/Nunatsiavut regions (Canada) between 1972 and 2017. Mercury levels did not change through time in seal liver, but THg levels in muscle decreased in seals from Hudson Bay (−0.91%/yr) and Ungava/Nunatsiavut (−1.30%/yr). Carbon stable isotope values in seal muscle decreased significantly through time in 4 regions. Selenium‐to‐THg ratios were found to be >1 for all years and regions. Variation partitioning analyses across regions indicated that THg trends in seals were mostly explained by age (7.3–21.7%), climate parameters (3.5–12.5%), and diet (up to 9%); climate indices (i.e., Arctic and North Atlantic Oscillations, Pacific/North American pattern) explained the majority of the climate portion. The THg levels had a positive relationship with Arctic Oscillation for multiple regions. Associations of THg with air temperature, total precipitation, and sea‐ice coverage, as well as with North Atlantic Oscillation and Pacific/North American pattern were found to vary with tissue type and geographical area. Environ Toxicol Chem 2020;39:2462–2474. © 2020 Her Majesty the Queen in Right of Canada. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Reproduced with the permission of the Minister of Fisheries and Oceans Canada. |
format |
Text |
author |
Houde, Magali Taranu, Zofia E. Wang, Xiaowa Young, Brent Gagnon, P. Ferguson, Steve H. Kwan, Michael Muir, Derek C.G. |
author_facet |
Houde, Magali Taranu, Zofia E. Wang, Xiaowa Young, Brent Gagnon, P. Ferguson, Steve H. Kwan, Michael Muir, Derek C.G. |
author_sort |
Houde, Magali |
title |
Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
title_short |
Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
title_full |
Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
title_fullStr |
Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
title_full_unstemmed |
Mercury in Ringed Seals (Pusa hispida) from the Canadian Arctic in Relation to Time and Climate Parameters |
title_sort |
mercury in ringed seals (pusa hispida) from the canadian arctic in relation to time and climate parameters |
publisher |
John Wiley and Sons Inc. |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7756774/ http://www.ncbi.nlm.nih.gov/pubmed/33025637 https://doi.org/10.1002/etc.4865 |
geographic |
Arctic Baffin Island Canada Hudson Hudson Bay Pacific |
geographic_facet |
Arctic Baffin Island Canada Hudson Hudson Bay Pacific |
genre |
Arctic marine mammals Arctic Baffin Island Baffin Beaufort Sea Central Arctic Hudson Bay North Atlantic North Atlantic oscillation Pusa hispida Sea ice |
genre_facet |
Arctic marine mammals Arctic Baffin Island Baffin Beaufort Sea Central Arctic Hudson Bay North Atlantic North Atlantic oscillation Pusa hispida Sea ice |
op_source |
Environ Toxicol Chem |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7756774/ http://www.ncbi.nlm.nih.gov/pubmed/33025637 http://dx.doi.org/10.1002/etc.4865 |
op_rights |
© 2020 Her Majesty the Queen in Right of Canada. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Reproduced with the permission of the Minister of Fisheries and Oceans Canada This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/etc.4865 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
39 |
container_issue |
12 |
container_start_page |
2462 |
op_container_end_page |
2474 |
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1766305234927222784 |