Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean
International audience Indicators of oxidative stress and metabolic capacity are key factors in understanding the fitness of wild populations. In the present study, these factors were evaluated in the pelagic Southern Ocean taxa Antarctic krill (Euphausia superba) and myctophid fish (Electrona antar...
Published in: | Marine Pollution Bulletin |
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Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03489978 https://doi.org/10.1016/j.marpolbul.2021.112178 |
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ftccsdartic:oai:HAL:hal-03489978v1 2023-05-15T13:37:59+02:00 Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean Seco, José Freitas, Rosa Xavier, José Bustamante, Paco Coelho, João Coppola, Francesca Saunders, Ryan Almeida, Ângela Fielding, Sophie Pardal, Miguel Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint Brierley, Andrew Pereira, Eduarda CESAM & Department of Chemistry Universidade de Aveiro Pelagic Ecology Research Group, Scottish Oceans Institut CESAM and Department of Biology British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Marine and Environmental Sciences Centre (MARE UC) Universidade de Coimbra Coimbra LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) Centre for Functional Ecology, Department of Life Sciences (CFE) University of Coimbra, Calçada Martim de Freitas 2021-05 https://hal.archives-ouvertes.fr/hal-03489978 https://doi.org/10.1016/j.marpolbul.2021.112178 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpolbul.2021.112178 hal-03489978 https://hal.archives-ouvertes.fr/hal-03489978 doi:10.1016/j.marpolbul.2021.112178 ISSN: 0025-326X EISSN: 0025-326X Marine Pollution Bulletin https://hal.archives-ouvertes.fr/hal-03489978 Marine Pollution Bulletin, Elsevier, 2021, 166, pp.112178. ⟨10.1016/j.marpolbul.2021.112178⟩ Toxicity Biochemical performance Antioxidant capacity Baseline [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1016/j.marpolbul.2021.112178 2022-01-08T23:34:41Z International audience Indicators of oxidative stress and metabolic capacity are key factors in understanding the fitness of wild populations. In the present study, these factors were evaluated in the pelagic Southern Ocean taxa Antarctic krill (Euphausia superba) and myctophid fish (Electrona antarctica, Gymnoscopelus braueri and G. nicholsi) to establish a baseline record for future studies. Mercury (Hg) concentrations were also analysed to evaluate its potential impacts on species biochemical performance. E. superba had higher metabolic activity than most of the myctophid species, which may explain the comparatively lower energy reserves found in the former. The activity of antioxidant enzymes showed, generally, a lower level in E. superba than in the myctophid species. The lack of any relationship between Hg concentrations and organisms’ antioxidant and biotransformation defence mechanisms indicate that levels of Hg accumulated in the studied species were not high enough to affect their biochemical processes adversely. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Southern Ocean Marine Pollution Bulletin 166 112178 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Toxicity Biochemical performance Antioxidant capacity Baseline [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
spellingShingle |
Toxicity Biochemical performance Antioxidant capacity Baseline [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology Seco, José Freitas, Rosa Xavier, José Bustamante, Paco Coelho, João Coppola, Francesca Saunders, Ryan Almeida, Ângela Fielding, Sophie Pardal, Miguel Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint Brierley, Andrew Pereira, Eduarda Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
topic_facet |
Toxicity Biochemical performance Antioxidant capacity Baseline [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
description |
International audience Indicators of oxidative stress and metabolic capacity are key factors in understanding the fitness of wild populations. In the present study, these factors were evaluated in the pelagic Southern Ocean taxa Antarctic krill (Euphausia superba) and myctophid fish (Electrona antarctica, Gymnoscopelus braueri and G. nicholsi) to establish a baseline record for future studies. Mercury (Hg) concentrations were also analysed to evaluate its potential impacts on species biochemical performance. E. superba had higher metabolic activity than most of the myctophid species, which may explain the comparatively lower energy reserves found in the former. The activity of antioxidant enzymes showed, generally, a lower level in E. superba than in the myctophid species. The lack of any relationship between Hg concentrations and organisms’ antioxidant and biotransformation defence mechanisms indicate that levels of Hg accumulated in the studied species were not high enough to affect their biochemical processes adversely. |
author2 |
CESAM & Department of Chemistry Universidade de Aveiro Pelagic Ecology Research Group, Scottish Oceans Institut CESAM and Department of Biology British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Marine and Environmental Sciences Centre (MARE UC) Universidade de Coimbra Coimbra LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) Centre for Functional Ecology, Department of Life Sciences (CFE) University of Coimbra, Calçada Martim de Freitas |
format |
Article in Journal/Newspaper |
author |
Seco, José Freitas, Rosa Xavier, José Bustamante, Paco Coelho, João Coppola, Francesca Saunders, Ryan Almeida, Ângela Fielding, Sophie Pardal, Miguel Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint Brierley, Andrew Pereira, Eduarda |
author_facet |
Seco, José Freitas, Rosa Xavier, José Bustamante, Paco Coelho, João Coppola, Francesca Saunders, Ryan Almeida, Ângela Fielding, Sophie Pardal, Miguel Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint Brierley, Andrew Pereira, Eduarda |
author_sort |
Seco, José |
title |
Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
title_short |
Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
title_full |
Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
title_fullStr |
Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
title_full_unstemmed |
Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
title_sort |
oxidative stress, metabolic activity and mercury concentrations in antarctic krill euphausia superba and myctophid fish of the southern ocean |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03489978 https://doi.org/10.1016/j.marpolbul.2021.112178 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Southern Ocean |
op_source |
ISSN: 0025-326X EISSN: 0025-326X Marine Pollution Bulletin https://hal.archives-ouvertes.fr/hal-03489978 Marine Pollution Bulletin, Elsevier, 2021, 166, pp.112178. ⟨10.1016/j.marpolbul.2021.112178⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpolbul.2021.112178 hal-03489978 https://hal.archives-ouvertes.fr/hal-03489978 doi:10.1016/j.marpolbul.2021.112178 |
op_doi |
https://doi.org/10.1016/j.marpolbul.2021.112178 |
container_title |
Marine Pollution Bulletin |
container_volume |
166 |
container_start_page |
112178 |
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1766100156101427200 |