Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins.
International audience Hormones regulate many aspects of an individual's phenotype, including various physiological and behavioral traits. Two hormones have been described as important players in the regulation of parental investment in birds: the glucocorticoid hormone corticosterone and prola...
Published in: | Hormones and Behavior |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.science/hal-00839557 https://doi.org/10.1016/j.yhbeh.2013.06.003 |
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fthalin2p3:oai:HAL:hal-00839557v1 2024-05-12T08:10:17+00:00 Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. Thierry, Anne-Mathilde Brajon, Sophie Massemin, Sylvie Handrich, Yves Chastel, Olivier Raclot, Thierry Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) 2013-06-13 https://hal.science/hal-00839557 https://doi.org/10.1016/j.yhbeh.2013.06.003 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.yhbeh.2013.06.003 info:eu-repo/semantics/altIdentifier/pmid/23770271 hal-00839557 https://hal.science/hal-00839557 doi:10.1016/j.yhbeh.2013.06.003 PUBMED: 23770271 ISSN: 0018-506X EISSN: 1095-6867 Hormones and Behavior https://hal.science/hal-00839557 Hormones and Behavior, 2013, 64, pp.737-747. ⟨10.1016/j.yhbeh.2013.06.003⟩ Egg temperature Egg rotation rate Incubation behavior Parental care Pygoscelis adeliae Prolactin Seabird Bromocriptine Corticosterone [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2013 fthalin2p3 https://doi.org/10.1016/j.yhbeh.2013.06.003 2024-04-17T14:58:31Z International audience Hormones regulate many aspects of an individual's phenotype, including various physiological and behavioral traits. Two hormones have been described as important players in the regulation of parental investment in birds: the glucocorticoid hormone corticosterone and prolactin, a pituitary hormone, widely involved in mediating parental behavior. In comparison with corticosterone, the role of prolactin on parental investment remains poorly documented, and most studies so far have been correlative. In this study, the effects of an experimental decrease of prolactin levels on the incubation behavior of a long-lived seabird species were assessed. Male Adélie penguins were treated with self-degradable bromocriptine pellets, inhibiting prolactin secretion. Filming and subsequent video analysis allowed the determination of a behavioral time budget for birds and their position on the nest, while dummy eggs recorded incubation parameters. Incubation duration and breeding success at hatching were also monitored. As expected, bromocriptine-treatment significantly decreased plasma prolactin levels, but did not affect corticosterone levels. The behavioral time budget of penguins was not affected by the treatment. However, treated birds spent significantly more time in an upright position on the nest. These birds also incubated their eggs at lower temperatures and turned their eggs more frequently than controls, resulting in a lengthened incubation period. Despite this, the treatment was insufficient to trigger nest desertion and eggs of treated birds still hatched, indicating that several endocrine signals are required for the induction of nest abandonment. We suggest that the decreased prolactin levels in treated birds offset their timeline of breeding, so that birds displayed behavior typical of early incubation. Article in Journal/Newspaper Pygoscelis adeliae HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) Hormones and Behavior 64 4 737 747 |
institution |
Open Polar |
collection |
HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) |
op_collection_id |
fthalin2p3 |
language |
English |
topic |
Egg temperature Egg rotation rate Incubation behavior Parental care Pygoscelis adeliae Prolactin Seabird Bromocriptine Corticosterone [SDE]Environmental Sciences |
spellingShingle |
Egg temperature Egg rotation rate Incubation behavior Parental care Pygoscelis adeliae Prolactin Seabird Bromocriptine Corticosterone [SDE]Environmental Sciences Thierry, Anne-Mathilde Brajon, Sophie Massemin, Sylvie Handrich, Yves Chastel, Olivier Raclot, Thierry Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
topic_facet |
Egg temperature Egg rotation rate Incubation behavior Parental care Pygoscelis adeliae Prolactin Seabird Bromocriptine Corticosterone [SDE]Environmental Sciences |
description |
International audience Hormones regulate many aspects of an individual's phenotype, including various physiological and behavioral traits. Two hormones have been described as important players in the regulation of parental investment in birds: the glucocorticoid hormone corticosterone and prolactin, a pituitary hormone, widely involved in mediating parental behavior. In comparison with corticosterone, the role of prolactin on parental investment remains poorly documented, and most studies so far have been correlative. In this study, the effects of an experimental decrease of prolactin levels on the incubation behavior of a long-lived seabird species were assessed. Male Adélie penguins were treated with self-degradable bromocriptine pellets, inhibiting prolactin secretion. Filming and subsequent video analysis allowed the determination of a behavioral time budget for birds and their position on the nest, while dummy eggs recorded incubation parameters. Incubation duration and breeding success at hatching were also monitored. As expected, bromocriptine-treatment significantly decreased plasma prolactin levels, but did not affect corticosterone levels. The behavioral time budget of penguins was not affected by the treatment. However, treated birds spent significantly more time in an upright position on the nest. These birds also incubated their eggs at lower temperatures and turned their eggs more frequently than controls, resulting in a lengthened incubation period. Despite this, the treatment was insufficient to trigger nest desertion and eggs of treated birds still hatched, indicating that several endocrine signals are required for the induction of nest abandonment. We suggest that the decreased prolactin levels in treated birds offset their timeline of breeding, so that birds displayed behavior typical of early incubation. |
author2 |
Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Thierry, Anne-Mathilde Brajon, Sophie Massemin, Sylvie Handrich, Yves Chastel, Olivier Raclot, Thierry |
author_facet |
Thierry, Anne-Mathilde Brajon, Sophie Massemin, Sylvie Handrich, Yves Chastel, Olivier Raclot, Thierry |
author_sort |
Thierry, Anne-Mathilde |
title |
Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
title_short |
Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
title_full |
Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
title_fullStr |
Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
title_full_unstemmed |
Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins. |
title_sort |
decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male adélie penguins. |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00839557 https://doi.org/10.1016/j.yhbeh.2013.06.003 |
genre |
Pygoscelis adeliae |
genre_facet |
Pygoscelis adeliae |
op_source |
ISSN: 0018-506X EISSN: 1095-6867 Hormones and Behavior https://hal.science/hal-00839557 Hormones and Behavior, 2013, 64, pp.737-747. ⟨10.1016/j.yhbeh.2013.06.003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.yhbeh.2013.06.003 info:eu-repo/semantics/altIdentifier/pmid/23770271 hal-00839557 https://hal.science/hal-00839557 doi:10.1016/j.yhbeh.2013.06.003 PUBMED: 23770271 |
op_doi |
https://doi.org/10.1016/j.yhbeh.2013.06.003 |
container_title |
Hormones and Behavior |
container_volume |
64 |
container_issue |
4 |
container_start_page |
737 |
op_container_end_page |
747 |
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1798853717165867008 |