Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus.
International audience In seabirds, variations in stress hormone (corticosterone; henceforth CORT) levels have been shown to reflect changing marine conditions and, especially, changes in food availability. However, it remains unclear how CORT levels can be mechanistically affected by these changes...
Published in: | Journal of Experimental Biology |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2009
|
Subjects: | |
Online Access: | https://doi.org/10.1242/jeb.027722 https://hal.archives-ouvertes.fr/hal-00410490 |
id |
fttriple:oai:gotriple.eu:10670/1.frpdx0 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:10670/1.frpdx0 2023-05-15T17:03:54+02:00 Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. Angelier, Frédéric Giraudeau, Mathieu Bost, Charles-André Le Bouard, Fabrice Chastel, Olivier Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Department of Neurobiology, Physiology, and Behavior University of California Evolution et Diversité Biologique (EDB) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées 2009-09-01 https://doi.org/10.1242/jeb.027722 https://hal.archives-ouvertes.fr/hal-00410490 en eng HAL CCSD The Company of Biologists hal-00410490 doi:10.1242/jeb.027722 PUBMED: 19684217 10670/1.frpdx0 https://hal.archives-ouvertes.fr/hal-00410490 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology Journal of Experimental Biology, The Company of Biologists, 2009, 212 (Pt 17), pp.2824-9. ⟨10.1242/jeb.027722⟩ corticosterone foraging food intake seabird Aptenodytes patagonicus envir hist Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2009 fttriple https://doi.org/10.1242/jeb.027722 2023-01-22T16:34:59Z International audience In seabirds, variations in stress hormone (corticosterone; henceforth CORT) levels have been shown to reflect changing marine conditions and, especially, changes in food availability. However, it remains unclear how CORT levels can be mechanistically affected by these changes at the individual level. Specifically, the influence of food acquisition and foraging success on CORT secretion is poorly understood. In this study, we tested whether food acquisition can reduce baseline CORT levels (;the food intake hypothesis') by experimentally reducing foraging success of King Penguins (Aptenodytes patagonicus). Although CORT levels overall decreased during a foraging trip, CORT levels did not differ between experimental birds and controls. These results demonstrate that mass gain at sea is not involved in changes in baseline CORT levels in this species. The overall decrease in CORT levels during a foraging trip could result from CORT-mediated energy regulation (;the energy utilisation hypothesis'). Along with other evidence, we suggest that the influence of foraging success and food intake on CORT levels is complex and that the ecological meaning of baseline CORT levels can definitely vary between species and ecological contexts. Therefore, further studies are needed to better understand (1) how baseline CORT levels are functionally regulated according to energetic status and energetic demands and (2) to what extent CORT can be used to aid in the conservation of seabird populations. Article in Journal/Newspaper King Penguins Unknown Journal of Experimental Biology 212 17 2824 2829 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
corticosterone foraging food intake seabird Aptenodytes patagonicus envir hist |
spellingShingle |
corticosterone foraging food intake seabird Aptenodytes patagonicus envir hist Angelier, Frédéric Giraudeau, Mathieu Bost, Charles-André Le Bouard, Fabrice Chastel, Olivier Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
topic_facet |
corticosterone foraging food intake seabird Aptenodytes patagonicus envir hist |
description |
International audience In seabirds, variations in stress hormone (corticosterone; henceforth CORT) levels have been shown to reflect changing marine conditions and, especially, changes in food availability. However, it remains unclear how CORT levels can be mechanistically affected by these changes at the individual level. Specifically, the influence of food acquisition and foraging success on CORT secretion is poorly understood. In this study, we tested whether food acquisition can reduce baseline CORT levels (;the food intake hypothesis') by experimentally reducing foraging success of King Penguins (Aptenodytes patagonicus). Although CORT levels overall decreased during a foraging trip, CORT levels did not differ between experimental birds and controls. These results demonstrate that mass gain at sea is not involved in changes in baseline CORT levels in this species. The overall decrease in CORT levels during a foraging trip could result from CORT-mediated energy regulation (;the energy utilisation hypothesis'). Along with other evidence, we suggest that the influence of foraging success and food intake on CORT levels is complex and that the ecological meaning of baseline CORT levels can definitely vary between species and ecological contexts. Therefore, further studies are needed to better understand (1) how baseline CORT levels are functionally regulated according to energetic status and energetic demands and (2) to what extent CORT can be used to aid in the conservation of seabird populations. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Department of Neurobiology, Physiology, and Behavior University of California Evolution et Diversité Biologique (EDB) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées |
format |
Article in Journal/Newspaper |
author |
Angelier, Frédéric Giraudeau, Mathieu Bost, Charles-André Le Bouard, Fabrice Chastel, Olivier |
author_facet |
Angelier, Frédéric Giraudeau, Mathieu Bost, Charles-André Le Bouard, Fabrice Chastel, Olivier |
author_sort |
Angelier, Frédéric |
title |
Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
title_short |
Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
title_full |
Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
title_fullStr |
Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
title_full_unstemmed |
Are stress hormone levels a good proxy of foraging success? An experiment with King Penguins, Aptenodytes patagonicus. |
title_sort |
are stress hormone levels a good proxy of foraging success? an experiment with king penguins, aptenodytes patagonicus. |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://doi.org/10.1242/jeb.027722 https://hal.archives-ouvertes.fr/hal-00410490 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology Journal of Experimental Biology, The Company of Biologists, 2009, 212 (Pt 17), pp.2824-9. ⟨10.1242/jeb.027722⟩ |
op_relation |
hal-00410490 doi:10.1242/jeb.027722 PUBMED: 19684217 10670/1.frpdx0 https://hal.archives-ouvertes.fr/hal-00410490 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1242/jeb.027722 |
container_title |
Journal of Experimental Biology |
container_volume |
212 |
container_issue |
17 |
container_start_page |
2824 |
op_container_end_page |
2829 |
_version_ |
1766057892420517888 |