Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean
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 br...
Published in: | Marine Pollution Bulletin |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/529693/ https://nora.nerc.ac.uk/id/eprint/529693/1/Seco_2021_MBP_Oxidative_stress_AAM.pdf https://www.sciencedirect.com/science/article/pii/S0025326X21002125 |
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ftnerc:oai:nora.nerc.ac.uk:529693 2023-05-15T14:02:21+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 C. Bustamante, Paco Coelho, João P. Coppola, Francesca Saunders, Ryan A. Almeida, Ângela Fielding, Sophie Pardal, Miguel A. Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint A. Brierley, Andrew S. Pereira, Eduarda 2021-05 text http://nora.nerc.ac.uk/id/eprint/529693/ https://nora.nerc.ac.uk/id/eprint/529693/1/Seco_2021_MBP_Oxidative_stress_AAM.pdf https://www.sciencedirect.com/science/article/pii/S0025326X21002125 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/529693/1/Seco_2021_MBP_Oxidative_stress_AAM.pdf Seco, José; Freitas, Rosa; Xavier, José C. orcid:0000-0002-9621-6660 Bustamante, Paco; Coelho, João P.; Coppola, Francesca; Saunders, Ryan A. orcid:0000-0002-1157-7222 Almeida, Ângela; Fielding, Sophie orcid:0000-0002-3152-4742 Pardal, Miguel A.; Stowasser, Gabriele orcid:0000-0002-0595-0772 Pompeo, Giulia; Tarling, Geraint A. orcid:0000-0002-3753-5899 Brierley, Andrew S.; Pereira, Eduarda. 2021 Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean. Marine Pollution Bulletin, 166, 112178. https://doi.org/10.1016/j.marpolbul.2021.112178 <https://doi.org/10.1016/j.marpolbul.2021.112178> cc_by_nc_nd_4 CC-BY-NC-ND Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1016/j.marpolbul.2021.112178 2023-02-10T00:01:46Z 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 Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Marine Pollution Bulletin 166 112178 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Seco, José Freitas, Rosa Xavier, José C. Bustamante, Paco Coelho, João P. Coppola, Francesca Saunders, Ryan A. Almeida, Ângela Fielding, Sophie Pardal, Miguel A. Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint A. Brierley, Andrew S. Pereira, Eduarda |
spellingShingle |
Seco, José Freitas, Rosa Xavier, José C. Bustamante, Paco Coelho, João P. Coppola, Francesca Saunders, Ryan A. Almeida, Ângela Fielding, Sophie Pardal, Miguel A. Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint A. Brierley, Andrew S. Pereira, Eduarda Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean |
author_facet |
Seco, José Freitas, Rosa Xavier, José C. Bustamante, Paco Coelho, João P. Coppola, Francesca Saunders, Ryan A. Almeida, Ângela Fielding, Sophie Pardal, Miguel A. Stowasser, Gabriele Pompeo, Giulia Tarling, Geraint A. Brierley, Andrew S. 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 |
Elsevier |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/529693/ https://nora.nerc.ac.uk/id/eprint/529693/1/Seco_2021_MBP_Oxidative_stress_AAM.pdf https://www.sciencedirect.com/science/article/pii/S0025326X21002125 |
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_relation |
https://nora.nerc.ac.uk/id/eprint/529693/1/Seco_2021_MBP_Oxidative_stress_AAM.pdf Seco, José; Freitas, Rosa; Xavier, José C. orcid:0000-0002-9621-6660 Bustamante, Paco; Coelho, João P.; Coppola, Francesca; Saunders, Ryan A. orcid:0000-0002-1157-7222 Almeida, Ângela; Fielding, Sophie orcid:0000-0002-3152-4742 Pardal, Miguel A.; Stowasser, Gabriele orcid:0000-0002-0595-0772 Pompeo, Giulia; Tarling, Geraint A. orcid:0000-0002-3753-5899 Brierley, Andrew S.; Pereira, Eduarda. 2021 Oxidative stress, metabolic activity and mercury concentrations in Antarctic krill Euphausia superba and myctophid fish of the Southern Ocean. Marine Pollution Bulletin, 166, 112178. https://doi.org/10.1016/j.marpolbul.2021.112178 <https://doi.org/10.1016/j.marpolbul.2021.112178> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
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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1766272569577570304 |