The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins
International audience In response to prolonged periods of fasting, animals have evolved metabolic adaptations helping to mobilize body reserves and/or reducing metabolic rate, to ensure a longer usage of reserves. Those metabolic changes can however be associated with higher exposure to oxidative s...
Published in: | Journal of Experimental Biology |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
|
Subjects: | |
Online Access: | https://hal.science/hal-01356305 https://doi.org/10.1242/jeb.145250 |
id |
ftunivnantes:oai:HAL:hal-01356305v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-01356305v1 2023-05-15T17:03:55+02:00 The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins Schull, Quentin Viblanc, Vincent A. Stier, Antoine Saadaoui, Hédi Lefol, Emilie Criscuolo, François Bize, Pierre Robin, Jean-Patrice Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Institute of Biological and Environmental Sciences Aberdeen University of Aberdeen 2016 https://hal.science/hal-01356305 https://doi.org/10.1242/jeb.145250 en eng HAL CCSD The Company of Biologists info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.145250 hal-01356305 https://hal.science/hal-01356305 doi:10.1242/jeb.145250 ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-01356305 Journal of Experimental Biology, 2016, 219 (20), pp.3284-3293. ⟨10.1242/jeb.145250⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.1242/jeb.145250 2023-03-08T07:03:55Z International audience In response to prolonged periods of fasting, animals have evolved metabolic adaptations helping to mobilize body reserves and/or reducing metabolic rate, to ensure a longer usage of reserves. Those metabolic changes can however be associated with higher exposure to oxidative stress, raising the question how species that naturally fast during their life cycle avoid an accumulation of oxidative damage over time. King penguins repeatedly cope with fasting periods up to several weeks. Here we investigated how adult male penguins deal with oxidative stress after an experimentally induced moderate fasting period (PII) or an advanced fasting period (PIII). After fasting in captivity, birds were released to forage at sea. We measured plasmatic oxidative stress on the same individuals at the start and end of the fasting period and when they returned from foraging at sea. We found an increase in activity of the antioxidant enzyme superoxide dismutase along with fasting. However, PIII individuals showed higher oxidative damage at the end of the fast compared to PII individuals. When they returned from re-feeding at sea, all birds had recovered their initial body mass and exhibited low levels of oxidative damage. Notably, levels of oxidative damage after the foraging trip were correlated to the rate of mass gain at sea in PIII individuals but not in PII individuals. Altogether, our results suggest that fasting induces a transitory exposure to oxidative stress and that effort to recover in body mass after an advanced fasting period may be a neglected carry-over cost of fasting. Article in Journal/Newspaper King Penguins Université de Nantes: HAL-UNIV-NANTES Journal of Experimental Biology |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Schull, Quentin Viblanc, Vincent A. Stier, Antoine Saadaoui, Hédi Lefol, Emilie Criscuolo, François Bize, Pierre Robin, Jean-Patrice The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience In response to prolonged periods of fasting, animals have evolved metabolic adaptations helping to mobilize body reserves and/or reducing metabolic rate, to ensure a longer usage of reserves. Those metabolic changes can however be associated with higher exposure to oxidative stress, raising the question how species that naturally fast during their life cycle avoid an accumulation of oxidative damage over time. King penguins repeatedly cope with fasting periods up to several weeks. Here we investigated how adult male penguins deal with oxidative stress after an experimentally induced moderate fasting period (PII) or an advanced fasting period (PIII). After fasting in captivity, birds were released to forage at sea. We measured plasmatic oxidative stress on the same individuals at the start and end of the fasting period and when they returned from foraging at sea. We found an increase in activity of the antioxidant enzyme superoxide dismutase along with fasting. However, PIII individuals showed higher oxidative damage at the end of the fast compared to PII individuals. When they returned from re-feeding at sea, all birds had recovered their initial body mass and exhibited low levels of oxidative damage. Notably, levels of oxidative damage after the foraging trip were correlated to the rate of mass gain at sea in PIII individuals but not in PII individuals. Altogether, our results suggest that fasting induces a transitory exposure to oxidative stress and that effort to recover in body mass after an advanced fasting period may be a neglected carry-over cost of fasting. |
author2 |
Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Institute of Biological and Environmental Sciences Aberdeen University of Aberdeen |
format |
Article in Journal/Newspaper |
author |
Schull, Quentin Viblanc, Vincent A. Stier, Antoine Saadaoui, Hédi Lefol, Emilie Criscuolo, François Bize, Pierre Robin, Jean-Patrice |
author_facet |
Schull, Quentin Viblanc, Vincent A. Stier, Antoine Saadaoui, Hédi Lefol, Emilie Criscuolo, François Bize, Pierre Robin, Jean-Patrice |
author_sort |
Schull, Quentin |
title |
The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
title_short |
The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
title_full |
The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
title_fullStr |
The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
title_full_unstemmed |
The oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
title_sort |
oxidative debt of fasting: evidence for short to medium-term costs of advanced fasting in adult king penguins |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01356305 https://doi.org/10.1242/jeb.145250 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-01356305 Journal of Experimental Biology, 2016, 219 (20), pp.3284-3293. ⟨10.1242/jeb.145250⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.145250 hal-01356305 https://hal.science/hal-01356305 doi:10.1242/jeb.145250 |
op_doi |
https://doi.org/10.1242/jeb.145250 |
container_title |
Journal of Experimental Biology |
_version_ |
1766057897164275712 |