Experimentally delayed hatching triggers a magnified stress response in a long-lived bird
International audience In birds, the timing of breeding is a key life-history trait with crucial fitness consequences. We predicted that parents may value a brood less if it hatched later than expected, thereby decreasing their parental effort. In addition, breeding effort would be further modulated...
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ftunivnantes:oai:HAL:hal-00585199v1 2023-05-15T18:20:09+02:00 Experimentally delayed hatching triggers a magnified stress response in a long-lived bird Goutte, Aurélie Antoine, Elodie Chastel, Olivier Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) 2011 https://hal.science/hal-00585199 en eng HAL CCSD Elsevier hal-00585199 https://hal.science/hal-00585199 ISSN: 0018-506X EISSN: 1095-6867 Hormones and Behavior https://hal.science/hal-00585199 Hormones and Behavior, 2011, 59, pp.167-173 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftunivnantes 2023-02-08T00:45:35Z International audience In birds, the timing of breeding is a key life-history trait with crucial fitness consequences. We predicted that parents may value a brood less if it hatched later than expected, thereby decreasing their parental effort. In addition, breeding effort would be further modulated by the age-specific decline of future breeding opportunities. We experimentally investigated whether snow petrels, Pagodroma nivea, were less committed to care for a chick that hatched later than expected. The timing of hatching wasmanipulated by swapping eggs between early and late known-age pairs (7-44 years old), and investigations on hormonal and behavioral adjustments were conducted. As a hormonal gauge of parental commitment to the brood, we measured the corticosterone stress response of guarding adults. Indeed, an acute stress response mediates energy allocation towards survival at the expense of current reproduction and is magnified when the current brood value is low, as it is expected to be in young and/or delayed parents. As predicted, egg desertion and the magnitude of the stress response was stronger in delayed pairs compared to control ones. However, the treatment did not decrease the length of the guarding period, chick condition and chick survival. In addition, old parents resisted stress better (lower stress-induced corticosterone levels) than young ones. Our study provides evidence that snow petrels, as prudent parents, may value a brood less if it hatched later than expected. Thus, in long-lived birds, the responsiveness to stressors appeared to be adjusted according to the individual prospect of future breeding opportunities (age) and to the current brood value (timing of breeding). Article in Journal/Newspaper Snow Petrels Université de Nantes: HAL-UNIV-NANTES Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Goutte, Aurélie Antoine, Elodie Chastel, Olivier Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience In birds, the timing of breeding is a key life-history trait with crucial fitness consequences. We predicted that parents may value a brood less if it hatched later than expected, thereby decreasing their parental effort. In addition, breeding effort would be further modulated by the age-specific decline of future breeding opportunities. We experimentally investigated whether snow petrels, Pagodroma nivea, were less committed to care for a chick that hatched later than expected. The timing of hatching wasmanipulated by swapping eggs between early and late known-age pairs (7-44 years old), and investigations on hormonal and behavioral adjustments were conducted. As a hormonal gauge of parental commitment to the brood, we measured the corticosterone stress response of guarding adults. Indeed, an acute stress response mediates energy allocation towards survival at the expense of current reproduction and is magnified when the current brood value is low, as it is expected to be in young and/or delayed parents. As predicted, egg desertion and the magnitude of the stress response was stronger in delayed pairs compared to control ones. However, the treatment did not decrease the length of the guarding period, chick condition and chick survival. In addition, old parents resisted stress better (lower stress-induced corticosterone levels) than young ones. Our study provides evidence that snow petrels, as prudent parents, may value a brood less if it hatched later than expected. Thus, in long-lived birds, the responsiveness to stressors appeared to be adjusted according to the individual prospect of future breeding opportunities (age) and to the current brood value (timing of breeding). |
author2 |
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 |
Goutte, Aurélie Antoine, Elodie Chastel, Olivier |
author_facet |
Goutte, Aurélie Antoine, Elodie Chastel, Olivier |
author_sort |
Goutte, Aurélie |
title |
Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
title_short |
Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
title_full |
Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
title_fullStr |
Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
title_full_unstemmed |
Experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
title_sort |
experimentally delayed hatching triggers a magnified stress response in a long-lived bird |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00585199 |
long_lat |
ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Nivea |
geographic_facet |
Nivea |
genre |
Snow Petrels |
genre_facet |
Snow Petrels |
op_source |
ISSN: 0018-506X EISSN: 1095-6867 Hormones and Behavior https://hal.science/hal-00585199 Hormones and Behavior, 2011, 59, pp.167-173 |
op_relation |
hal-00585199 https://hal.science/hal-00585199 |
_version_ |
1766197635134259200 |