Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota)
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot ( Lota lota ) population collapse. Due to our limited ability to sample burbot in La...
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crwiley:10.1002/ieam.4874 2024-06-02T08:04:39+00:00 Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) Graves, Stephanie D. Molbert, Noëlie Janz, David M. Hayhurst, Lauren D. Brandt, Jessica E. Timlick, Lauren Palace, Vince P. 2023 http://dx.doi.org/10.1002/ieam.4874 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/ieam.4874 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Integrated Environmental Assessment and Management ISSN 1551-3777 1551-3793 journal-article 2023 crwiley https://doi.org/10.1002/ieam.4874 2024-05-03T11:37:36Z Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot ( Lota lota ) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference population to develop tools to model tissue Se disposition for a focal species in systems with elevated Se. Total Se concentrations in otoliths, biofluids (blood and endolymph), and tissues (muscle, liver, and ovary) from burbot in reference lakes in northwestern Ontario, Canada, were measured to document tissue‐to‐tissue Se relationships and evaluate the potential for otoliths to retrace Se exposure in fish. Among burbot tissue, Se concentrations were the highest in the ovary (mean ± SD = 4.55 ± 2.23 μg g −1 dry mass [dm]), followed by the liver (2.69 ± 1.96 μg g −1 dm) and muscle (1.87 ± 1.14 μg g −1 dm), and decreased with body size ( p < 0.05). In otoliths, Se was detected at low levels (<1 μg g −1 ). Selenium concentrations in burbot samples were positively correlated among muscle, ovary, liver, and endolymph tissues, but not for the most recent annually averaged or lifetime‐averaged Se concentrations in otoliths. We hypothesize that Se concentrations were too low in this study to establish links between otoliths and other fish tissues and to detect significant lifetime variation in individuals, and that further validation using archived otoliths from burbot exposed to elevated Se levels in Lake Koocanusa‐Kootenai River is needed to reconstruct exposure histories. However, intercompartmental models proved valuable for estimating Se concentrations in burbot tissues only available by means of lethal sampling (i.e., ovary), although additional work should confirm whether the established models are reliable to predict concentrations in Se‐impaired systems as tissue distributions are likely to differ with increasing Se levels. Integr Environ Assess Manag ... Article in Journal/Newspaper Burbot Lota lota lota Wiley Online Library British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Integrated Environmental Assessment and Management |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot ( Lota lota ) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference population to develop tools to model tissue Se disposition for a focal species in systems with elevated Se. Total Se concentrations in otoliths, biofluids (blood and endolymph), and tissues (muscle, liver, and ovary) from burbot in reference lakes in northwestern Ontario, Canada, were measured to document tissue‐to‐tissue Se relationships and evaluate the potential for otoliths to retrace Se exposure in fish. Among burbot tissue, Se concentrations were the highest in the ovary (mean ± SD = 4.55 ± 2.23 μg g −1 dry mass [dm]), followed by the liver (2.69 ± 1.96 μg g −1 dm) and muscle (1.87 ± 1.14 μg g −1 dm), and decreased with body size ( p < 0.05). In otoliths, Se was detected at low levels (<1 μg g −1 ). Selenium concentrations in burbot samples were positively correlated among muscle, ovary, liver, and endolymph tissues, but not for the most recent annually averaged or lifetime‐averaged Se concentrations in otoliths. We hypothesize that Se concentrations were too low in this study to establish links between otoliths and other fish tissues and to detect significant lifetime variation in individuals, and that further validation using archived otoliths from burbot exposed to elevated Se levels in Lake Koocanusa‐Kootenai River is needed to reconstruct exposure histories. However, intercompartmental models proved valuable for estimating Se concentrations in burbot tissues only available by means of lethal sampling (i.e., ovary), although additional work should confirm whether the established models are reliable to predict concentrations in Se‐impaired systems as tissue distributions are likely to differ with increasing Se levels. Integr Environ Assess Manag ... |
format |
Article in Journal/Newspaper |
author |
Graves, Stephanie D. Molbert, Noëlie Janz, David M. Hayhurst, Lauren D. Brandt, Jessica E. Timlick, Lauren Palace, Vince P. |
spellingShingle |
Graves, Stephanie D. Molbert, Noëlie Janz, David M. Hayhurst, Lauren D. Brandt, Jessica E. Timlick, Lauren Palace, Vince P. Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
author_facet |
Graves, Stephanie D. Molbert, Noëlie Janz, David M. Hayhurst, Lauren D. Brandt, Jessica E. Timlick, Lauren Palace, Vince P. |
author_sort |
Graves, Stephanie D. |
title |
Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
title_short |
Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
title_full |
Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
title_fullStr |
Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
title_full_unstemmed |
Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( Lota lota) |
title_sort |
relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot ( lota lota) |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ieam.4874 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/ieam.4874 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Integrated Environmental Assessment and Management ISSN 1551-3777 1551-3793 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/ieam.4874 |
container_title |
Integrated Environmental Assessment and Management |
_version_ |
1800749290155409408 |