Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type
International audience The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterbor...
Published in: | Environmental Research |
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Online Access: | https://hal.science/hal-03824526 https://hal.science/hal-03824526/document https://hal.science/hal-03824526/file/HAL%20Pub%20Hg203%20bioacc%20cuttlefish%20Text.pdf https://doi.org/10.1016/j.envres.2022.114201 |
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ftccsdartic:oai:HAL:hal-03824526v1 2024-02-27T08:44:15+00:00 Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type Minet, Antoine Metian, Marc Taylor, Angus Gentès, Sophie Azemard, Sabine Oberhänsli, François Swarzenski, Peter Bustamante, Paco Lacoue-Labarthe, Thomas LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Marine Environment Laboratories Monaco (IAEA-MEL) International Atomic Energy Agency Vienna (IAEA) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) 2022 https://hal.science/hal-03824526 https://hal.science/hal-03824526/document https://hal.science/hal-03824526/file/HAL%20Pub%20Hg203%20bioacc%20cuttlefish%20Text.pdf https://doi.org/10.1016/j.envres.2022.114201 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envres.2022.114201 hal-03824526 https://hal.science/hal-03824526 https://hal.science/hal-03824526/document https://hal.science/hal-03824526/file/HAL%20Pub%20Hg203%20bioacc%20cuttlefish%20Text.pdf doi:10.1016/j.envres.2022.114201 info:eu-repo/semantics/OpenAccess ISSN: 0013-9351 EISSN: 1096-0953 Environmental Research https://hal.science/hal-03824526 Environmental Research, 2022, 215 (Part 1), pp.114201. ⟨10.1016/j.envres.2022.114201⟩ cephalopod radiotracer methylmercury iHg waterborne contamination trophic transfer kinetics organotropism [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1016/j.envres.2022.114201 2024-01-28T01:08:18Z International audience The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterborne inorganic Hg (iHg) and dietary inorganic and organic Hg (methylHg, MeHg) in juvenile common cuttlefish Sepia officinalis. The effect of two contrasting CO2 partial pressures in seawater (400 and 1600 μatm, equivalent to pH 8.08 and 7.54, respectively) and two types of prey (fish and shrimp) were tested as potential driving factors of Hg bioaccumulation. After 14 days of waterborne exposure, juvenile cuttlefish showed a stable concentration factor of 709 ± 54 and 893 ± 117 at pH 8.08 and 7.54, respectively. The accumulated dissolved i203Hg was depurated relatively rapidly with a radiotracer biological half-life (Tb1/2) of 44 ± 12 and 55 ± 16 days at pH 8.08 and 7.54, respectively. During the whole exposure period, approximately half of the i203Hg was found in the gills, but i203Hg also increased in the digestive gland. When fed with 203Hg-radiolabelled prey, cuttlefish assimilated almost all the Hg provided (>95%) independently of the prey type. Nevertheless, the prey type played a major role on the depuration kinetics with Hg Tb1/2 approaching infinity in fish fed cuttlefish vs. 25 days in shrimp fed cuttlefish. Such a difference is explained by the different proportion of Hg species in the prey, with fish prey containing more than 80% of MeHg vs. only 30% in shrimp. Four days after ingestion of radiolabelled food, iHg was primarily found in the digestive organs while MeHg was transferred towards the muscular tissues. No significant effect of pH/pCO2 variation was observed during both the waterborne and dietary exposures on the bioaccumulation kinetics and tissue distribution of i203Hg and Me203Hg. Dietary exposure is the predominant pathway of Hg bioaccumulation in juvenile cuttlefish. Article in Journal/Newspaper Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Environmental Research 215 114201 |
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 |
cephalopod radiotracer methylmercury iHg waterborne contamination trophic transfer kinetics organotropism [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
cephalopod radiotracer methylmercury iHg waterborne contamination trophic transfer kinetics organotropism [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology Minet, Antoine Metian, Marc Taylor, Angus Gentès, Sophie Azemard, Sabine Oberhänsli, François Swarzenski, Peter Bustamante, Paco Lacoue-Labarthe, Thomas Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
topic_facet |
cephalopod radiotracer methylmercury iHg waterborne contamination trophic transfer kinetics organotropism [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The bioaccumulation of mercury (Hg) in marine organisms through various pathways has not yet been fully explored, particularly in cephalopods. This study utilises radiotracer techniques using the isotope 203Hg to investigate the toxicokinetics and the organotropism of waterborne inorganic Hg (iHg) and dietary inorganic and organic Hg (methylHg, MeHg) in juvenile common cuttlefish Sepia officinalis. The effect of two contrasting CO2 partial pressures in seawater (400 and 1600 μatm, equivalent to pH 8.08 and 7.54, respectively) and two types of prey (fish and shrimp) were tested as potential driving factors of Hg bioaccumulation. After 14 days of waterborne exposure, juvenile cuttlefish showed a stable concentration factor of 709 ± 54 and 893 ± 117 at pH 8.08 and 7.54, respectively. The accumulated dissolved i203Hg was depurated relatively rapidly with a radiotracer biological half-life (Tb1/2) of 44 ± 12 and 55 ± 16 days at pH 8.08 and 7.54, respectively. During the whole exposure period, approximately half of the i203Hg was found in the gills, but i203Hg also increased in the digestive gland. When fed with 203Hg-radiolabelled prey, cuttlefish assimilated almost all the Hg provided (>95%) independently of the prey type. Nevertheless, the prey type played a major role on the depuration kinetics with Hg Tb1/2 approaching infinity in fish fed cuttlefish vs. 25 days in shrimp fed cuttlefish. Such a difference is explained by the different proportion of Hg species in the prey, with fish prey containing more than 80% of MeHg vs. only 30% in shrimp. Four days after ingestion of radiolabelled food, iHg was primarily found in the digestive organs while MeHg was transferred towards the muscular tissues. No significant effect of pH/pCO2 variation was observed during both the waterborne and dietary exposures on the bioaccumulation kinetics and tissue distribution of i203Hg and Me203Hg. Dietary exposure is the predominant pathway of Hg bioaccumulation in juvenile cuttlefish. |
author2 |
LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Marine Environment Laboratories Monaco (IAEA-MEL) International Atomic Energy Agency Vienna (IAEA) Institut Universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) |
format |
Article in Journal/Newspaper |
author |
Minet, Antoine Metian, Marc Taylor, Angus Gentès, Sophie Azemard, Sabine Oberhänsli, François Swarzenski, Peter Bustamante, Paco Lacoue-Labarthe, Thomas |
author_facet |
Minet, Antoine Metian, Marc Taylor, Angus Gentès, Sophie Azemard, Sabine Oberhänsli, François Swarzenski, Peter Bustamante, Paco Lacoue-Labarthe, Thomas |
author_sort |
Minet, Antoine |
title |
Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
title_short |
Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
title_full |
Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
title_fullStr |
Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
title_full_unstemmed |
Bioaccumulation of inorganic and organic mercury in the cuttlefish Sepia officinalis: influence of ocean acidification and food type |
title_sort |
bioaccumulation of inorganic and organic mercury in the cuttlefish sepia officinalis: influence of ocean acidification and food type |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03824526 https://hal.science/hal-03824526/document https://hal.science/hal-03824526/file/HAL%20Pub%20Hg203%20bioacc%20cuttlefish%20Text.pdf https://doi.org/10.1016/j.envres.2022.114201 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0013-9351 EISSN: 1096-0953 Environmental Research https://hal.science/hal-03824526 Environmental Research, 2022, 215 (Part 1), pp.114201. ⟨10.1016/j.envres.2022.114201⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envres.2022.114201 hal-03824526 https://hal.science/hal-03824526 https://hal.science/hal-03824526/document https://hal.science/hal-03824526/file/HAL%20Pub%20Hg203%20bioacc%20cuttlefish%20Text.pdf doi:10.1016/j.envres.2022.114201 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.envres.2022.114201 |
container_title |
Environmental Research |
container_volume |
215 |
container_start_page |
114201 |
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