Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada
To better understand the risks and benefits of eating wild-harvested fish from the Northwest Territories, Canada, levels of total mercury (HgT) and selenium (Se) and composition of omega-3 fatty acid ( n -3 FA) were measured in muscle tissue of fish harvested from lakes in the Dehcho Region, Northwe...
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ftdatacite:10.6084/m9.figshare.4286498 2023-05-15T15:47:18+02:00 Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada Reyes, Ellen S. Henao, Juan J. Aristizabal Kornobis, Katherine M. Hanning, Rhona M. Majowicz, Shannon E. Liber, Karsten Stark, Ken D. Low, George Swanson, Heidi K. Laird, Brian D. 2016 https://dx.doi.org/10.6084/m9.figshare.4286498 https://tandf.figshare.com/articles/journal_contribution/Associations_between_omega-3_fatty_acids_selenium_content_and_mercury_levels_in_wild-harvested_fish_from_the_Dehcho_Region_Northwest_Territories_Canada/4286498 unknown Taylor & Francis https://dx.doi.org/10.1080/15287394.2016.1230916 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Text article-journal Journal contribution ScholarlyArticle 2016 ftdatacite https://doi.org/10.6084/m9.figshare.4286498 https://doi.org/10.1080/15287394.2016.1230916 2021-11-05T12:55:41Z To better understand the risks and benefits of eating wild-harvested fish from the Northwest Territories, Canada, levels of total mercury (HgT) and selenium (Se) and composition of omega-3 fatty acid ( n -3 FA) were measured in muscle tissue of fish harvested from lakes in the Dehcho Region, Northwest Territories, Canada. Average HgT levels ranged from 0.057 mg/kg (cisco) to 0.551 mg/kg (northern pike), while average n -3 FA concentrations ranged from 101 mg/100 g (burbot) to 1,689 mg/100 g (lake trout). In contrast to HgT and n -3 FA, mean Se concentrations were relatively similar among species. Consequently, species such as lake whitefish, cisco, and longnose sucker displayed the highest nutrient levels relative to HgT content. Levels of HgT tended to increase with fish size, while Se and n -3 FA levels were typically not associated with fork length or fish weight. Interestingly, HgT concentration was occasionally inversely related to tissue nutrient content. Significant negative correlations were observed between Hg and n -3 FA for lake trout, northern pike, and walleye. There were also significant negative correlations between Hg and Se noted for lake whitefish, cisco, and northern pike. Samples with the highest nutritional content displayed, on occasion, lower levels of HgT. This study provides valuable information for the design of probabilistic models capable of refining public health messaging related to minimizing Hg risks and maximizing nutrient levels in wild-harvested fish in the Canadian subarctic. Text Burbot Longnose sucker Northwest Territories Subarctic DataCite Metadata Store (German National Library of Science and Technology) Canada Dehcho Region ENVELOPE(-121.350,-121.350,61.857,61.857) Northwest Territories |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences |
spellingShingle |
59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Reyes, Ellen S. Henao, Juan J. Aristizabal Kornobis, Katherine M. Hanning, Rhona M. Majowicz, Shannon E. Liber, Karsten Stark, Ken D. Low, George Swanson, Heidi K. Laird, Brian D. Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
topic_facet |
59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences |
description |
To better understand the risks and benefits of eating wild-harvested fish from the Northwest Territories, Canada, levels of total mercury (HgT) and selenium (Se) and composition of omega-3 fatty acid ( n -3 FA) were measured in muscle tissue of fish harvested from lakes in the Dehcho Region, Northwest Territories, Canada. Average HgT levels ranged from 0.057 mg/kg (cisco) to 0.551 mg/kg (northern pike), while average n -3 FA concentrations ranged from 101 mg/100 g (burbot) to 1,689 mg/100 g (lake trout). In contrast to HgT and n -3 FA, mean Se concentrations were relatively similar among species. Consequently, species such as lake whitefish, cisco, and longnose sucker displayed the highest nutrient levels relative to HgT content. Levels of HgT tended to increase with fish size, while Se and n -3 FA levels were typically not associated with fork length or fish weight. Interestingly, HgT concentration was occasionally inversely related to tissue nutrient content. Significant negative correlations were observed between Hg and n -3 FA for lake trout, northern pike, and walleye. There were also significant negative correlations between Hg and Se noted for lake whitefish, cisco, and northern pike. Samples with the highest nutritional content displayed, on occasion, lower levels of HgT. This study provides valuable information for the design of probabilistic models capable of refining public health messaging related to minimizing Hg risks and maximizing nutrient levels in wild-harvested fish in the Canadian subarctic. |
format |
Text |
author |
Reyes, Ellen S. Henao, Juan J. Aristizabal Kornobis, Katherine M. Hanning, Rhona M. Majowicz, Shannon E. Liber, Karsten Stark, Ken D. Low, George Swanson, Heidi K. Laird, Brian D. |
author_facet |
Reyes, Ellen S. Henao, Juan J. Aristizabal Kornobis, Katherine M. Hanning, Rhona M. Majowicz, Shannon E. Liber, Karsten Stark, Ken D. Low, George Swanson, Heidi K. Laird, Brian D. |
author_sort |
Reyes, Ellen S. |
title |
Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
title_short |
Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
title_full |
Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
title_fullStr |
Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
title_full_unstemmed |
Associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the Dehcho Region, Northwest Territories, Canada |
title_sort |
associations between omega-3 fatty acids, selenium content, and mercury levels in wild-harvested fish from the dehcho region, northwest territories, canada |
publisher |
Taylor & Francis |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.4286498 https://tandf.figshare.com/articles/journal_contribution/Associations_between_omega-3_fatty_acids_selenium_content_and_mercury_levels_in_wild-harvested_fish_from_the_Dehcho_Region_Northwest_Territories_Canada/4286498 |
long_lat |
ENVELOPE(-121.350,-121.350,61.857,61.857) |
geographic |
Canada Dehcho Region Northwest Territories |
geographic_facet |
Canada Dehcho Region Northwest Territories |
genre |
Burbot Longnose sucker Northwest Territories Subarctic |
genre_facet |
Burbot Longnose sucker Northwest Territories Subarctic |
op_relation |
https://dx.doi.org/10.1080/15287394.2016.1230916 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.4286498 https://doi.org/10.1080/15287394.2016.1230916 |
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1766382083796631552 |