Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod
Abstract In Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in the water column may bring them in...
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crwiley:10.1002/etc.4415 2024-06-23T07:51:04+00:00 Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod Reinardy, Helena C. Pedersen, Kristine B. Nahrgang, Jasmine Frantzen, Marianne 2019 http://dx.doi.org/10.1002/etc.4415 https://onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4415 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/etc.4415 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4415 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Environmental Toxicology and Chemistry volume 38, issue 7, page 1446-1454 ISSN 0730-7268 1552-8618 journal-article 2019 crwiley https://doi.org/10.1002/etc.4415 2024-06-06T04:22:06Z Abstract In Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in the water column may bring them into contact with locally spawned pelagic fish eggs, including Atlantic cod, Gadus morhua . Newly fertilized cod embryos were exposed to suspended mine tailings particles up to 3.2 mg/L in flow‐through aquaria for a total of 21 d. Significantly more particles adhered to the surface of the chorion from the high treatment after 11‐d exposure, and dissolved Cu concentrations increased in the water (up to 0.36 ± 0.06 µg/L). There was no adverse effect on embryo mortality but an 8% elevation in larval mortality. There were no differences with treatment on timing of hatching, embryo and larva morphometrics, abnormalities, or cardiac activity. There was a treatment‐dependent up‐regulation of stress marker genes ( hspa8 , cyp1c1 ) but no indication of metal‐induced activation of metallothionien ( mt gene transcription). Transcription markers for DNA and histone methyltransferases did show treatment‐related up‐regulation, indicative of altered methylation in larvae when developmental methylation patterns are determined, indicating some level of chronic toxicity that may have longer‐term effects. Environ Toxicol Chem 2019;38:1446–1454. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Norway Environmental Toxicology and Chemistry 38 7 1446 1454 |
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Wiley Online Library |
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description |
Abstract In Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in the water column may bring them into contact with locally spawned pelagic fish eggs, including Atlantic cod, Gadus morhua . Newly fertilized cod embryos were exposed to suspended mine tailings particles up to 3.2 mg/L in flow‐through aquaria for a total of 21 d. Significantly more particles adhered to the surface of the chorion from the high treatment after 11‐d exposure, and dissolved Cu concentrations increased in the water (up to 0.36 ± 0.06 µg/L). There was no adverse effect on embryo mortality but an 8% elevation in larval mortality. There were no differences with treatment on timing of hatching, embryo and larva morphometrics, abnormalities, or cardiac activity. There was a treatment‐dependent up‐regulation of stress marker genes ( hspa8 , cyp1c1 ) but no indication of metal‐induced activation of metallothionien ( mt gene transcription). Transcription markers for DNA and histone methyltransferases did show treatment‐related up‐regulation, indicative of altered methylation in larvae when developmental methylation patterns are determined, indicating some level of chronic toxicity that may have longer‐term effects. Environ Toxicol Chem 2019;38:1446–1454. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC. |
format |
Article in Journal/Newspaper |
author |
Reinardy, Helena C. Pedersen, Kristine B. Nahrgang, Jasmine Frantzen, Marianne |
spellingShingle |
Reinardy, Helena C. Pedersen, Kristine B. Nahrgang, Jasmine Frantzen, Marianne Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
author_facet |
Reinardy, Helena C. Pedersen, Kristine B. Nahrgang, Jasmine Frantzen, Marianne |
author_sort |
Reinardy, Helena C. |
title |
Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
title_short |
Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
title_full |
Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
title_fullStr |
Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
title_full_unstemmed |
Effects of Mine Tailings Exposure on Early Life Stages of Atlantic Cod |
title_sort |
effects of mine tailings exposure on early life stages of atlantic cod |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/etc.4415 https://onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4415 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/etc.4415 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4415 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Environmental Toxicology and Chemistry volume 38, issue 7, page 1446-1454 ISSN 0730-7268 1552-8618 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/etc.4415 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
38 |
container_issue |
7 |
container_start_page |
1446 |
op_container_end_page |
1454 |
_version_ |
1802642061058375680 |