Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study
Summary Life‐history theory predicts that long‐lived organisms should reduce parental effort under inclement environmental conditions in order to favour long‐term survival. Seabirds are long‐lived top predators often exposed to environmental endocrine disrupting chemicals such as mercury (Hg). Hg‐co...
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Online Access: | http://dx.doi.org/10.1111/1365-2435.12534 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12534 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12534 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 |
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crwiley:10.1111/1365-2435.12534 2024-06-23T07:50:17+00:00 Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study Tartu, Sabrina Bustamante, Paco Angelier, Frédéric Lendvai, Ádám Z. Moe, Børge Blévin, Pierre Bech, Claus Gabrielsen, Geir W. Bustnes, Jan Ove Chastel, Olivier Hõrak, Peeter Agence Nationale de la Recherche 2015 http://dx.doi.org/10.1111/1365-2435.12534 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12534 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12534 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Functional Ecology volume 30, issue 4, page 596-604 ISSN 0269-8463 1365-2435 journal-article 2015 crwiley https://doi.org/10.1111/1365-2435.12534 2024-05-31T08:13:27Z Summary Life‐history theory predicts that long‐lived organisms should reduce parental effort under inclement environmental conditions in order to favour long‐term survival. Seabirds are long‐lived top predators often exposed to environmental endocrine disrupting chemicals such as mercury (Hg). Hg‐contaminated birds show disrupted parental behaviour. Avian parental behaviour is governed by two key hormones in birds: corticosterone ( CORT , a glucocorticoid hormone) and prolactin ( PRL , a pituitary hormone involved in parental care). Any disruption of these hormones may alter the ability of an individual to adjust parental behaviour to environmental conditions. The first aim of this study was to describe the relationships between blood Hg concentrations, plasma PRL and reproductive performance in Arctic black‐legged kittiwakes ( Rissa tridactyla) . We a found negative relationship between plasma initial PRL and blood Hg concentrations in males. Moreover, Hg concentration was negatively related to breeding success in chick‐rearing males. Secondly, to study the effect of a chronic increase in CORT levels on the Hg– PRL relationship, we experimentally increased stress with CORT pellet implantation. We predicted that Hg and CORT would act synergistically on PRL and an increase in CORT concentration would steepen the Hg– PRL relationship. However, adding CORT did not steepen the Hg– PRL relationship. Hatching success was significantly lower in CORT ‐implanted males than in controls, and breeding success was not reduced in CORT ‐implanted male kittiwakes with high levels of blood Hg. Our results suggest that Hg may impair reproductive performance through a disruption of PRL secretion. Contrary to our prediction, Hg and CORT did not act synergistically and the underlying mechanisms associating CORT and Hg with PRL might be more complex than a single interaction between two factors. Article in Journal/Newspaper Arctic rissa tridactyla Wiley Online Library Arctic Functional Ecology 30 4 596 604 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Life‐history theory predicts that long‐lived organisms should reduce parental effort under inclement environmental conditions in order to favour long‐term survival. Seabirds are long‐lived top predators often exposed to environmental endocrine disrupting chemicals such as mercury (Hg). Hg‐contaminated birds show disrupted parental behaviour. Avian parental behaviour is governed by two key hormones in birds: corticosterone ( CORT , a glucocorticoid hormone) and prolactin ( PRL , a pituitary hormone involved in parental care). Any disruption of these hormones may alter the ability of an individual to adjust parental behaviour to environmental conditions. The first aim of this study was to describe the relationships between blood Hg concentrations, plasma PRL and reproductive performance in Arctic black‐legged kittiwakes ( Rissa tridactyla) . We a found negative relationship between plasma initial PRL and blood Hg concentrations in males. Moreover, Hg concentration was negatively related to breeding success in chick‐rearing males. Secondly, to study the effect of a chronic increase in CORT levels on the Hg– PRL relationship, we experimentally increased stress with CORT pellet implantation. We predicted that Hg and CORT would act synergistically on PRL and an increase in CORT concentration would steepen the Hg– PRL relationship. However, adding CORT did not steepen the Hg– PRL relationship. Hatching success was significantly lower in CORT ‐implanted males than in controls, and breeding success was not reduced in CORT ‐implanted male kittiwakes with high levels of blood Hg. Our results suggest that Hg may impair reproductive performance through a disruption of PRL secretion. Contrary to our prediction, Hg and CORT did not act synergistically and the underlying mechanisms associating CORT and Hg with PRL might be more complex than a single interaction between two factors. |
author2 |
Hõrak, Peeter Agence Nationale de la Recherche |
format |
Article in Journal/Newspaper |
author |
Tartu, Sabrina Bustamante, Paco Angelier, Frédéric Lendvai, Ádám Z. Moe, Børge Blévin, Pierre Bech, Claus Gabrielsen, Geir W. Bustnes, Jan Ove Chastel, Olivier |
spellingShingle |
Tartu, Sabrina Bustamante, Paco Angelier, Frédéric Lendvai, Ádám Z. Moe, Børge Blévin, Pierre Bech, Claus Gabrielsen, Geir W. Bustnes, Jan Ove Chastel, Olivier Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
author_facet |
Tartu, Sabrina Bustamante, Paco Angelier, Frédéric Lendvai, Ádám Z. Moe, Børge Blévin, Pierre Bech, Claus Gabrielsen, Geir W. Bustnes, Jan Ove Chastel, Olivier |
author_sort |
Tartu, Sabrina |
title |
Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
title_short |
Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
title_full |
Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
title_fullStr |
Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
title_full_unstemmed |
Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study |
title_sort |
mercury exposure, stress and prolactin secretion in an arctic seabird: an experimental study |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/1365-2435.12534 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12534 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12534 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12534 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic rissa tridactyla |
genre_facet |
Arctic rissa tridactyla |
op_source |
Functional Ecology volume 30, issue 4, page 596-604 ISSN 0269-8463 1365-2435 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2435.12534 |
container_title |
Functional Ecology |
container_volume |
30 |
container_issue |
4 |
container_start_page |
596 |
op_container_end_page |
604 |
_version_ |
1802641144343953408 |