Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird
Mercury, a ubiquitous toxic element, is known to alter expression of sex steroids and to impair reproduction across vertebrates but the mechanisms underlying these effects are not clearly identified. We examined whether contamination by mercury predicts the probability to skip reproduction in black-...
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ftzenodo:oai:zenodo.org:4970125 2023-06-06T11:50:42+02:00 Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird Tartu, Sabrina Goutte, Aurélie Bustamante, Paco Angelier, Frédéric Moe, Børge Clément-Chastel, Céline Bech, Claus Gabrielsen, Geir Wing Bustnes, Jan Ove Chastel, Olivier 2013-05-29 https://zenodo.org/record/4970125 https://doi.org/10.5061/dryad.4ff07 unknown doi:10.1098/rsbl.2013.0317 https://zenodo.org/communities/dryad https://zenodo.org/record/4970125 https://doi.org/10.5061/dryad.4ff07 oai:zenodo.org:4970125 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Luteinizing Hormone GnRH challenge Intermittent breeding Black-legged kittiwake Mercury info:eu-repo/semantics/other dataset 2013 ftzenodo https://doi.org/10.5061/dryad.4ff0710.1098/rsbl.2013.0317 2023-04-13T22:49:25Z Mercury, a ubiquitous toxic element, is known to alter expression of sex steroids and to impair reproduction across vertebrates but the mechanisms underlying these effects are not clearly identified. We examined whether contamination by mercury predicts the probability to skip reproduction in black-legged kittiwakes (Rissa tridactyla) from Svalbard. We also manipulated the endocrine system to investigate the mechanism underlying this relationship. During the pre-laying period, we injected exogenous GnRH (gonadotropin-releasing hormone) to test the ability of the pituitary to release luteinizing hormone (LH, a key hormone for the release of sex steroids and hence breeding) in relation to mercury burden. Birds that skipped reproduction had significantly higher mercury concentration in blood than breeders. Endocrine profiles of these birds also varied based on breeding status (breeders versus non-breeders), mercury contamination and sex. Specifically, in skippers (birds that did not breed), baseline LH decreased with increasing mercury concentration in males, whereas it increased in females. GnRH-induced LH levels increased with increasing mercury concentration in both sexes. These results suggest that mercury contamination may disrupt GnRH input to the pituitary. Thus, high mercury concentration could affect the ability of long-lived birds to modulate their reproductive effort (skipping or breeding) according to ongoing environmental changes in the Arctic, thereby impacting population dynamics. 2008-2011_Mercury_Breeding decision_LH_TestosteroneRaw data. For 2008 and 2011: Sex, breeding decision and mercury levels. For 2008: sex, breeding decision, mercury, GnRH treatment, LH and testosterone levels.2008-2011_Mercury_Breeding decision_Hormones.pdf Dataset Arctic Black-legged Kittiwake rissa tridactyla Svalbard Zenodo Arctic Svalbard |
institution |
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collection |
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op_collection_id |
ftzenodo |
language |
unknown |
topic |
Luteinizing Hormone GnRH challenge Intermittent breeding Black-legged kittiwake Mercury |
spellingShingle |
Luteinizing Hormone GnRH challenge Intermittent breeding Black-legged kittiwake Mercury Tartu, Sabrina Goutte, Aurélie Bustamante, Paco Angelier, Frédéric Moe, Børge Clément-Chastel, Céline Bech, Claus Gabrielsen, Geir Wing Bustnes, Jan Ove Chastel, Olivier Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
topic_facet |
Luteinizing Hormone GnRH challenge Intermittent breeding Black-legged kittiwake Mercury |
description |
Mercury, a ubiquitous toxic element, is known to alter expression of sex steroids and to impair reproduction across vertebrates but the mechanisms underlying these effects are not clearly identified. We examined whether contamination by mercury predicts the probability to skip reproduction in black-legged kittiwakes (Rissa tridactyla) from Svalbard. We also manipulated the endocrine system to investigate the mechanism underlying this relationship. During the pre-laying period, we injected exogenous GnRH (gonadotropin-releasing hormone) to test the ability of the pituitary to release luteinizing hormone (LH, a key hormone for the release of sex steroids and hence breeding) in relation to mercury burden. Birds that skipped reproduction had significantly higher mercury concentration in blood than breeders. Endocrine profiles of these birds also varied based on breeding status (breeders versus non-breeders), mercury contamination and sex. Specifically, in skippers (birds that did not breed), baseline LH decreased with increasing mercury concentration in males, whereas it increased in females. GnRH-induced LH levels increased with increasing mercury concentration in both sexes. These results suggest that mercury contamination may disrupt GnRH input to the pituitary. Thus, high mercury concentration could affect the ability of long-lived birds to modulate their reproductive effort (skipping or breeding) according to ongoing environmental changes in the Arctic, thereby impacting population dynamics. 2008-2011_Mercury_Breeding decision_LH_TestosteroneRaw data. For 2008 and 2011: Sex, breeding decision and mercury levels. For 2008: sex, breeding decision, mercury, GnRH treatment, LH and testosterone levels.2008-2011_Mercury_Breeding decision_Hormones.pdf |
format |
Dataset |
author |
Tartu, Sabrina Goutte, Aurélie Bustamante, Paco Angelier, Frédéric Moe, Børge Clément-Chastel, Céline Bech, Claus Gabrielsen, Geir Wing Bustnes, Jan Ove Chastel, Olivier |
author_facet |
Tartu, Sabrina Goutte, Aurélie Bustamante, Paco Angelier, Frédéric Moe, Børge Clément-Chastel, Céline Bech, Claus Gabrielsen, Geir Wing Bustnes, Jan Ove Chastel, Olivier |
author_sort |
Tartu, Sabrina |
title |
Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
title_short |
Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
title_full |
Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
title_fullStr |
Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
title_full_unstemmed |
Data from: To breed or not to breed: endocrine response to mercury contamination by an Arctic seabird |
title_sort |
data from: to breed or not to breed: endocrine response to mercury contamination by an arctic seabird |
publishDate |
2013 |
url |
https://zenodo.org/record/4970125 https://doi.org/10.5061/dryad.4ff07 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Black-legged Kittiwake rissa tridactyla Svalbard |
genre_facet |
Arctic Black-legged Kittiwake rissa tridactyla Svalbard |
op_relation |
doi:10.1098/rsbl.2013.0317 https://zenodo.org/communities/dryad https://zenodo.org/record/4970125 https://doi.org/10.5061/dryad.4ff07 oai:zenodo.org:4970125 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.4ff0710.1098/rsbl.2013.0317 |
_version_ |
1767956419621945344 |