Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird
International audience Mercury (Hg) is a globally important pollutant that can negatively impact metabolic, endocrine and immune systems of marine biota. Seabirds are long-lived marine top predators and hence are at risk of bioaccumulating high Hg concentrations from their prey. Here, we measured bl...
Published in: | Chemosphere |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2024
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Subjects: | |
Online Access: | https://hal.science/hal-04365168 https://hal.science/hal-04365168/document https://hal.science/hal-04365168/file/Iba%C3%B1ez%20et%20al%202024%20CHEMOSPHERE.pdf https://doi.org/10.1016/j.chemosphere.2023.140630 |
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ftccsdartic:oai:HAL:hal-04365168v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
Pollution Mercury Seabirds Physiology Reproduction Antarctica [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
spellingShingle |
Pollution Mercury Seabirds Physiology Reproduction Antarctica [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology Ibañez, Andrés Mills, William Bustamante, Paco Morales, Lara Torres, Diego d' Astek, Beatriz Mariano-Jelicich, Rocío Phillips, Richard Montalti, Diego Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
topic_facet |
Pollution Mercury Seabirds Physiology Reproduction Antarctica [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
description |
International audience Mercury (Hg) is a globally important pollutant that can negatively impact metabolic, endocrine and immune systems of marine biota. Seabirds are long-lived marine top predators and hence are at risk of bioaccumulating high Hg concentrations from their prey. Here, we measured blood total mercury (THg) concentrations and relationships with physiology and breeding parameters of breeding brown skuas (Stercorarius antarcticus) (n = 49 individuals) at Esperanza/Hope Bay, Antarctic Peninsula. Mean blood THg concentrations were similar in males and females despite the differences in body size and breeding roles, but differed between study years. Immune markers (hematocrit, Immunoglobulin Y [IgY] and albumin) were negatively correlated with blood THg concentrations, which likely indicates a disruptive effect of Hg on immunity. Alanine aminotransferase (GPT) activity, reflecting liver dysfunction, was positively associated with blood THg. Additionally, triacylglycerol and albumin differed between our study years, but did not correlate with Hg levels, and so were more likely to reflect changes in diet and nutritional status rather than Hg contamination. Egg volume correlated negatively with blood THg concentrations. Our study provides new insights into the sublethal effects of Hg contamination on immunity, liver function and breeding parameters in seabirds. In this Antarctic species, exposure to sublethal Hg concentrations reflects the short-term risks which could make individuals more susceptible to environmental stressors, including ongoing climatic changes. |
author2 |
Museo de La Plata Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET) Department of Geography and Environmental Science University of Reading (UOR) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Universidad Nacional de la Plata Argentine (UNLP) Instituto de Investigaciones Marinas y Costeras Mar del Plata (IIMyC) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Facultad de Ciencias Exactas y Naturales Mar del Plata Universidad Nacional de Mar del Plata Mar del Plata (UNMdP)-Universidad Nacional de Mar del Plata Mar del Plata (UNMdP) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Instituto Antartico Argentino |
format |
Article in Journal/Newspaper |
author |
Ibañez, Andrés Mills, William Bustamante, Paco Morales, Lara Torres, Diego d' Astek, Beatriz Mariano-Jelicich, Rocío Phillips, Richard Montalti, Diego |
author_facet |
Ibañez, Andrés Mills, William Bustamante, Paco Morales, Lara Torres, Diego d' Astek, Beatriz Mariano-Jelicich, Rocío Phillips, Richard Montalti, Diego |
author_sort |
Ibañez, Andrés |
title |
Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
title_short |
Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
title_full |
Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
title_fullStr |
Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
title_full_unstemmed |
Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
title_sort |
deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04365168 https://hal.science/hal-04365168/document https://hal.science/hal-04365168/file/Iba%C3%B1ez%20et%20al%202024%20CHEMOSPHERE.pdf https://doi.org/10.1016/j.chemosphere.2023.140630 |
long_lat |
ENVELOPE(-56.983,-56.983,-63.400,-63.400) ENVELOPE(-57.038,-57.038,-63.403,-63.403) |
geographic |
Antarctic Antarctic Peninsula Esperanza Hope Bay |
geographic_facet |
Antarctic Antarctic Peninsula Esperanza Hope Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Stercorarius antarcticus |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Stercorarius antarcticus |
op_source |
ISSN: 0045-6535 EISSN: 1879-1298 Chemosphere https://hal.science/hal-04365168 Chemosphere, 2024, 346, pp.140630. ⟨10.1016/j.chemosphere.2023.140630⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2023.140630 hal-04365168 https://hal.science/hal-04365168 https://hal.science/hal-04365168/document https://hal.science/hal-04365168/file/Iba%C3%B1ez%20et%20al%202024%20CHEMOSPHERE.pdf doi:10.1016/j.chemosphere.2023.140630 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.chemosphere.2023.140630 |
container_title |
Chemosphere |
container_volume |
346 |
container_start_page |
140630 |
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1792046203837349888 |
spelling |
ftccsdartic:oai:HAL:hal-04365168v1 2024-02-27T08:33:32+00:00 Deleterious effects of mercury contamination on immunocompetence, liver function and egg volume in an antarctic seabird Ibañez, Andrés Mills, William Bustamante, Paco Morales, Lara Torres, Diego d' Astek, Beatriz Mariano-Jelicich, Rocío Phillips, Richard Montalti, Diego Museo de La Plata Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET) Department of Geography and Environmental Science University of Reading (UOR) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Universidad Nacional de la Plata Argentine (UNLP) Instituto de Investigaciones Marinas y Costeras Mar del Plata (IIMyC) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Facultad de Ciencias Exactas y Naturales Mar del Plata Universidad Nacional de Mar del Plata Mar del Plata (UNMdP)-Universidad Nacional de Mar del Plata Mar del Plata (UNMdP) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Instituto Antartico Argentino 2024-01 https://hal.science/hal-04365168 https://hal.science/hal-04365168/document https://hal.science/hal-04365168/file/Iba%C3%B1ez%20et%20al%202024%20CHEMOSPHERE.pdf https://doi.org/10.1016/j.chemosphere.2023.140630 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2023.140630 hal-04365168 https://hal.science/hal-04365168 https://hal.science/hal-04365168/document https://hal.science/hal-04365168/file/Iba%C3%B1ez%20et%20al%202024%20CHEMOSPHERE.pdf doi:10.1016/j.chemosphere.2023.140630 info:eu-repo/semantics/OpenAccess ISSN: 0045-6535 EISSN: 1879-1298 Chemosphere https://hal.science/hal-04365168 Chemosphere, 2024, 346, pp.140630. ⟨10.1016/j.chemosphere.2023.140630⟩ Pollution Mercury Seabirds Physiology Reproduction Antarctica [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology info:eu-repo/semantics/article Journal articles 2024 ftccsdartic https://doi.org/10.1016/j.chemosphere.2023.140630 2024-01-28T00:13:01Z International audience Mercury (Hg) is a globally important pollutant that can negatively impact metabolic, endocrine and immune systems of marine biota. Seabirds are long-lived marine top predators and hence are at risk of bioaccumulating high Hg concentrations from their prey. Here, we measured blood total mercury (THg) concentrations and relationships with physiology and breeding parameters of breeding brown skuas (Stercorarius antarcticus) (n = 49 individuals) at Esperanza/Hope Bay, Antarctic Peninsula. Mean blood THg concentrations were similar in males and females despite the differences in body size and breeding roles, but differed between study years. Immune markers (hematocrit, Immunoglobulin Y [IgY] and albumin) were negatively correlated with blood THg concentrations, which likely indicates a disruptive effect of Hg on immunity. Alanine aminotransferase (GPT) activity, reflecting liver dysfunction, was positively associated with blood THg. Additionally, triacylglycerol and albumin differed between our study years, but did not correlate with Hg levels, and so were more likely to reflect changes in diet and nutritional status rather than Hg contamination. Egg volume correlated negatively with blood THg concentrations. Our study provides new insights into the sublethal effects of Hg contamination on immunity, liver function and breeding parameters in seabirds. In this Antarctic species, exposure to sublethal Hg concentrations reflects the short-term risks which could make individuals more susceptible to environmental stressors, including ongoing climatic changes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Stercorarius antarcticus Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Antarctic Peninsula Esperanza ENVELOPE(-56.983,-56.983,-63.400,-63.400) Hope Bay ENVELOPE(-57.038,-57.038,-63.403,-63.403) Chemosphere 346 140630 |