Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ).
Non‐anadromous forms of Arctic char (Salvelinus alpinus), those that are restricted to lakes and rivers, typically have higher mercury (Hg) concentrations than anadromous forms, which migrate to and from the sea. Using tissue burden data from the literature and our own analyses, we performed a scree...
Published in: | Environmental Toxicology and Chemistry |
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2019
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Online Access: | https://espace.inrs.ca/id/eprint/7849/ https://espace.inrs.ca/id/eprint/7849/1/P3454.pdf https://doi.org/10.1002/etc.4341 |
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ftinrsquebec:oai:espace.inrs.ca:7849 2023-05-15T14:27:12+02:00 Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). Barst, Benjamin D. Drevnick, Paul E. Muir, Derek C. G. Gantner, Nikolaus Power, Michael Köck, Günter Chéhab, Nathalie Swanson, Heidi Rigét, Frank Basu, Niladri 2019 application/pdf https://espace.inrs.ca/id/eprint/7849/ https://espace.inrs.ca/id/eprint/7849/1/P3454.pdf https://doi.org/10.1002/etc.4341 en eng https://espace.inrs.ca/id/eprint/7849/1/P3454.pdf Barst, Benjamin D., Drevnick, Paul E., Muir, Derek C. G., Gantner, Nikolaus, Power, Michael, Köck, Günter, Chéhab, Nathalie, Swanson, Heidi, Rigét, Frank et Basu, Niladri (2019). Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). Environmental Toxicology and Chemistry , vol. 38 , nº 3. p. 489-502. DOI:10.1002/etc.4341 <https://doi.org/10.1002/etc.4341>. doi:10.1002/etc.4341 methylmercury arctic char Salvelinus alpinus non‐anadromous risk assessment lakes threshold‐effect level Article Évalué par les pairs 2019 ftinrsquebec https://doi.org/10.1002/etc.4341 2023-02-10T11:44:49Z Non‐anadromous forms of Arctic char (Salvelinus alpinus), those that are restricted to lakes and rivers, typically have higher mercury (Hg) concentrations than anadromous forms, which migrate to and from the sea. Using tissue burden data from the literature and our own analyses, we performed a screening‐level risk assessment of methylmercury (MeHg) for non‐anadromous Arctic char. Our assessment included 1569 fish distributed across 83 sites. Site‐specific mean total Hg concentrations in non‐anadromous Arctic char muscle varied considerably from 0.01 to 1.13 µg/g wet weight, with 21% (17 of 83 sites) meeting or exceeding a threshold‐effect level in fish of 0.33 µg/g wet weight, and 13% (11 of 83 sites) meeting or exceeding a threshold‐effect level in fish of 0.5 µg/g wet weight. Of the sites in exceedance of the 0.33‐µg/g threshold, 7 were located in Greenland and 10 in Canada (Labrador, Nunavut, and Yukon). All but one of these sites were located in interfrost or permafrost biomes. Maximum total Hg concentrations exceeded 0.33 µg/g wet weight at 53% of sites (40 of the 75 sites with available maximum Hg values), and exceeded 0.5 µg/g wet weight at 27% (20 of 75 sites). Collectively, these results indicate that certain populations of non‐anadromous Arctic char located mainly in interfrost and permafrost regions may be at risk for MeHg toxicity. This approach provides a simple statistical assessment of MeHg risk to non‐anadromous Arctic char, and does not indicate actual effects. We highlight the need for studies that evaluate the potential toxic effects of MeHg in non‐anadromous Arctic char, as well as those that aid in the development of a MeHg toxic‐effect threshold specific to this species of fish. Article in Journal/Newspaper Arctic Arctic Greenland Nunavut permafrost Salvelinus alpinus Yukon Institut national de la recherche scientifique, Québec: Espace INRS Arctic Nunavut Yukon Canada Greenland Environmental Toxicology and Chemistry 38 3 489 502 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
methylmercury arctic char Salvelinus alpinus non‐anadromous risk assessment lakes threshold‐effect level |
spellingShingle |
methylmercury arctic char Salvelinus alpinus non‐anadromous risk assessment lakes threshold‐effect level Barst, Benjamin D. Drevnick, Paul E. Muir, Derek C. G. Gantner, Nikolaus Power, Michael Köck, Günter Chéhab, Nathalie Swanson, Heidi Rigét, Frank Basu, Niladri Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
topic_facet |
methylmercury arctic char Salvelinus alpinus non‐anadromous risk assessment lakes threshold‐effect level |
description |
Non‐anadromous forms of Arctic char (Salvelinus alpinus), those that are restricted to lakes and rivers, typically have higher mercury (Hg) concentrations than anadromous forms, which migrate to and from the sea. Using tissue burden data from the literature and our own analyses, we performed a screening‐level risk assessment of methylmercury (MeHg) for non‐anadromous Arctic char. Our assessment included 1569 fish distributed across 83 sites. Site‐specific mean total Hg concentrations in non‐anadromous Arctic char muscle varied considerably from 0.01 to 1.13 µg/g wet weight, with 21% (17 of 83 sites) meeting or exceeding a threshold‐effect level in fish of 0.33 µg/g wet weight, and 13% (11 of 83 sites) meeting or exceeding a threshold‐effect level in fish of 0.5 µg/g wet weight. Of the sites in exceedance of the 0.33‐µg/g threshold, 7 were located in Greenland and 10 in Canada (Labrador, Nunavut, and Yukon). All but one of these sites were located in interfrost or permafrost biomes. Maximum total Hg concentrations exceeded 0.33 µg/g wet weight at 53% of sites (40 of the 75 sites with available maximum Hg values), and exceeded 0.5 µg/g wet weight at 27% (20 of 75 sites). Collectively, these results indicate that certain populations of non‐anadromous Arctic char located mainly in interfrost and permafrost regions may be at risk for MeHg toxicity. This approach provides a simple statistical assessment of MeHg risk to non‐anadromous Arctic char, and does not indicate actual effects. We highlight the need for studies that evaluate the potential toxic effects of MeHg in non‐anadromous Arctic char, as well as those that aid in the development of a MeHg toxic‐effect threshold specific to this species of fish. |
format |
Article in Journal/Newspaper |
author |
Barst, Benjamin D. Drevnick, Paul E. Muir, Derek C. G. Gantner, Nikolaus Power, Michael Köck, Günter Chéhab, Nathalie Swanson, Heidi Rigét, Frank Basu, Niladri |
author_facet |
Barst, Benjamin D. Drevnick, Paul E. Muir, Derek C. G. Gantner, Nikolaus Power, Michael Köck, Günter Chéhab, Nathalie Swanson, Heidi Rigét, Frank Basu, Niladri |
author_sort |
Barst, Benjamin D. |
title |
Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
title_short |
Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
title_full |
Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
title_fullStr |
Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
title_full_unstemmed |
Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). |
title_sort |
screening-level risk assessment of methylmercury for non-anadromous arctic char (salvelinus alpinus ). |
publishDate |
2019 |
url |
https://espace.inrs.ca/id/eprint/7849/ https://espace.inrs.ca/id/eprint/7849/1/P3454.pdf https://doi.org/10.1002/etc.4341 |
geographic |
Arctic Nunavut Yukon Canada Greenland |
geographic_facet |
Arctic Nunavut Yukon Canada Greenland |
genre |
Arctic Arctic Greenland Nunavut permafrost Salvelinus alpinus Yukon |
genre_facet |
Arctic Arctic Greenland Nunavut permafrost Salvelinus alpinus Yukon |
op_relation |
https://espace.inrs.ca/id/eprint/7849/1/P3454.pdf Barst, Benjamin D., Drevnick, Paul E., Muir, Derek C. G., Gantner, Nikolaus, Power, Michael, Köck, Günter, Chéhab, Nathalie, Swanson, Heidi, Rigét, Frank et Basu, Niladri (2019). Screening-level risk assessment of methylmercury for non-anadromous Arctic char (Salvelinus alpinus ). Environmental Toxicology and Chemistry , vol. 38 , nº 3. p. 489-502. DOI:10.1002/etc.4341 <https://doi.org/10.1002/etc.4341>. doi:10.1002/etc.4341 |
op_doi |
https://doi.org/10.1002/etc.4341 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
38 |
container_issue |
3 |
container_start_page |
489 |
op_container_end_page |
502 |
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