Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird
International audience Seabirds, as long-lived top predators, accumulate contaminants such as mercury (Hg), an established endocrine disruptor. In long lived species hormonal secretion varies with age; therefore, Hg-induced endocrine disruption may be exacerbated in some age classes. Here we investi...
Main Authors: | , , , , , , |
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Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Subjects: | |
Online Access: | https://hal.science/hal-01104655 https://hal.science/hal-01104655/document https://hal.science/hal-01104655/file/Tartu%20et%20al.%202014%20Plos%20ONE.pdf https://doi.org/10.1371/journal.pone.0103642.t004 |
id |
ftunivnantes:oai:HAL:hal-01104655v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Pagodroma nivea mercury sex-related segregation stable isotopes Antarctica Luteinizing hormone age [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
spellingShingle |
Pagodroma nivea mercury sex-related segregation stable isotopes Antarctica Luteinizing hormone age [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology Tartu, Sabrina Bustamante, Paco Goutte, Aurélie Cherel, Yves Weimerskirch, Henri Bustnes, Jan Ove Chastel, Olivier Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
topic_facet |
Pagodroma nivea mercury sex-related segregation stable isotopes Antarctica Luteinizing hormone age [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
description |
International audience Seabirds, as long-lived top predators, accumulate contaminants such as mercury (Hg), an established endocrine disruptor. In long lived species hormonal secretion varies with age; therefore, Hg-induced endocrine disruption may be exacerbated in some age classes. Here we investigated relationships between blood total Hg and luteinizing hormone (LH, a key pituitary hormone for the onset of breeding), in pre-laying known-age (11-45 years old) snow petrels (Pagodroma nivea) from Adélie Land, Antarctica. We predicted that 1) blood Hg would increase with advancing age as a consequence of bio-accumulation; and that 2) increasing blood Hg would be related to decreased concentrations of LH in the most Hg-contaminated individuals. Hg concentrations were higher in females than in males (p<0.001), and contrary to our prediction, decreased with advancing age in males (p=0.009) and tended to do so in females (p=0.06). The analysis of stable isotopes (δ 13 C and δ 15 N) suggested that this unexpected pattern could originate from age and sex-related variations in trophic niche, and hence Hg exposure. Regarding LH, our prediction was only supported in young birds (≤ 23 years) where baseline LH was inversely correlated with Hg concentrations (p=0.04). Hg burden did not predict baseline LH or GnRH-induced LH in birds that were more than 23 years old. These results show that age and contaminants may interfere with major endocrine mechanisms and, together with other recent studies, support the view that Hg could be connected to LH secretion and could then impair the fitness of long-lived birds. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Division of Arctic Ecology (NINA) Norwegian Institute for Nature Research (NINA) |
format |
Article in Journal/Newspaper |
author |
Tartu, Sabrina Bustamante, Paco Goutte, Aurélie Cherel, Yves Weimerskirch, Henri Bustnes, Jan Ove Chastel, Olivier |
author_facet |
Tartu, Sabrina Bustamante, Paco Goutte, Aurélie Cherel, Yves Weimerskirch, Henri Bustnes, Jan Ove Chastel, Olivier |
author_sort |
Tartu, Sabrina |
title |
Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
title_short |
Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
title_full |
Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
title_fullStr |
Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
title_full_unstemmed |
Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird |
title_sort |
age-related mercury contamination and relationship with luteinizing hormone in a long-lived antarctic bird |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01104655 https://hal.science/hal-01104655/document https://hal.science/hal-01104655/file/Tartu%20et%20al.%202014%20Plos%20ONE.pdf https://doi.org/10.1371/journal.pone.0103642.t004 |
long_lat |
ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Antarctic Nivea |
geographic_facet |
Antarctic Nivea |
genre |
Antarc* Antarctic Antarctica Snow Petrels |
genre_facet |
Antarc* Antarctic Antarctica Snow Petrels |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01104655 PLoS ONE, 2014, 9 (7), pp.e103642. ⟨10.1371/journal.pone.0103642.t004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0103642.t004 hal-01104655 https://hal.science/hal-01104655 https://hal.science/hal-01104655/document https://hal.science/hal-01104655/file/Tartu%20et%20al.%202014%20Plos%20ONE.pdf doi:10.1371/journal.pone.0103642.t004 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0103642.t004 |
_version_ |
1766275127604936704 |
spelling |
ftunivnantes:oai:HAL:hal-01104655v1 2023-05-15T14:04:07+02:00 Age-Related Mercury Contamination and Relationship with Luteinizing Hormone in a Long-Lived Antarctic Bird Tartu, Sabrina Bustamante, Paco Goutte, Aurélie Cherel, Yves Weimerskirch, Henri Bustnes, Jan Ove Chastel, Olivier Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Division of Arctic Ecology (NINA) Norwegian Institute for Nature Research (NINA) 2014 https://hal.science/hal-01104655 https://hal.science/hal-01104655/document https://hal.science/hal-01104655/file/Tartu%20et%20al.%202014%20Plos%20ONE.pdf https://doi.org/10.1371/journal.pone.0103642.t004 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0103642.t004 hal-01104655 https://hal.science/hal-01104655 https://hal.science/hal-01104655/document https://hal.science/hal-01104655/file/Tartu%20et%20al.%202014%20Plos%20ONE.pdf doi:10.1371/journal.pone.0103642.t004 info:eu-repo/semantics/OpenAccess ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01104655 PLoS ONE, 2014, 9 (7), pp.e103642. ⟨10.1371/journal.pone.0103642.t004⟩ Pagodroma nivea mercury sex-related segregation stable isotopes Antarctica Luteinizing hormone age [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology info:eu-repo/semantics/article Journal articles 2014 ftunivnantes https://doi.org/10.1371/journal.pone.0103642.t004 2023-03-08T07:35:27Z International audience Seabirds, as long-lived top predators, accumulate contaminants such as mercury (Hg), an established endocrine disruptor. In long lived species hormonal secretion varies with age; therefore, Hg-induced endocrine disruption may be exacerbated in some age classes. Here we investigated relationships between blood total Hg and luteinizing hormone (LH, a key pituitary hormone for the onset of breeding), in pre-laying known-age (11-45 years old) snow petrels (Pagodroma nivea) from Adélie Land, Antarctica. We predicted that 1) blood Hg would increase with advancing age as a consequence of bio-accumulation; and that 2) increasing blood Hg would be related to decreased concentrations of LH in the most Hg-contaminated individuals. Hg concentrations were higher in females than in males (p<0.001), and contrary to our prediction, decreased with advancing age in males (p=0.009) and tended to do so in females (p=0.06). The analysis of stable isotopes (δ 13 C and δ 15 N) suggested that this unexpected pattern could originate from age and sex-related variations in trophic niche, and hence Hg exposure. Regarding LH, our prediction was only supported in young birds (≤ 23 years) where baseline LH was inversely correlated with Hg concentrations (p=0.04). Hg burden did not predict baseline LH or GnRH-induced LH in birds that were more than 23 years old. These results show that age and contaminants may interfere with major endocrine mechanisms and, together with other recent studies, support the view that Hg could be connected to LH secretion and could then impair the fitness of long-lived birds. Article in Journal/Newspaper Antarc* Antarctic Antarctica Snow Petrels Université de Nantes: HAL-UNIV-NANTES Antarctic Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) |