Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins
International audience The passage from shore to marine life is a critical step in the development of juvenile penguins and is characterized by a fuel selection towards lipid oxida- tion concomitant to an enhancement of lipid-induced ther- mogenesis. However, mechanisms of such thermogenic improveme...
Published in: | Journal of Comparative Physiology B |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
|
Subjects: | |
Online Access: | https://hal-sde.archives-ouvertes.fr/hal-01332835 https://doi.org/10.1007/s00360-016-0975-3 |
id |
ftunivnantes:oai:HAL:hal-01332835v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-01332835v1 2023-05-15T17:03:56+02:00 Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins Teulier, Loïc Rey, Benjamin Tornos, Jérémy Le Coadic, Marion Monternier, Pierre-Axel Bourguignon, Aurore Dolmazon, Virginie Romestaing, Caroline Rouanet, Jean-Louis Duchamp, Claude, Roussel, Damien Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) 2016 https://hal-sde.archives-ouvertes.fr/hal-01332835 https://doi.org/10.1007/s00360-016-0975-3 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00360-016-0975-3 hal-01332835 https://hal-sde.archives-ouvertes.fr/hal-01332835 doi:10.1007/s00360-016-0975-3 ISSN: 0174-1578 EISSN: 1432-136X Journal of Comparative Physiology B https://hal-sde.archives-ouvertes.fr/hal-01332835 Journal of Comparative Physiology B, Springer Verlag, 2016, 186, pp.639-650. ⟨10.1007/s00360-016-0975-3⟩ Metabolism · Mitochondria · Skeletal muscle · Energy substrates · Oxidative phosphorylation efficiency [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.1007/s00360-016-0975-3 2022-10-19T00:16:54Z International audience The passage from shore to marine life is a critical step in the development of juvenile penguins and is characterized by a fuel selection towards lipid oxida- tion concomitant to an enhancement of lipid-induced ther- mogenesis. However, mechanisms of such thermogenic improvement at fledging remain undefined. We used two different groups of pre-fledging king penguins (Apteno- dytes patagonicus) to investigate the specific contribution of cold exposure during water immersion to lipid metabo- lism. Terrestrial penguins that had never been immersed in cold water were compared with experimentally cold-water immersed juveniles. Experimentally immersed penguins underwent ten successive immersions at approximately 9–10 °C for 5 h over 3 weeks. We evaluated adaptive ther- mogenesis by measuring body temperature, metabolic rate and shivering activity in fully immersed penguins exposed to water temperatures ranging from 12 to 29 °C. Both never-immersed and experimentally immersed penguins were able to maintain their homeothermy in cold water, exhibiting similar thermogenic activity. In vivo, perfusion of lipid emulsion at thermoneutrality induced a twofold larger calorigenic response in experimentally immersed than in never-immersed birds. In vitro, the respiratory rates and the oxidative phosphorylation efficiency of isolated muscle mitochondria were not improved with cold-water immersions. The present study shows that acclimation to cold water only partially reproduced the fuel selection towards lipid oxidation that characterizes penguin acclima- tization to marine life. Article in Journal/Newspaper King Penguins Université de Nantes: HAL-UNIV-NANTES Journal of Comparative Physiology B 186 5 639 650 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Metabolism · Mitochondria · Skeletal muscle · Energy substrates · Oxidative phosphorylation efficiency [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Metabolism · Mitochondria · Skeletal muscle · Energy substrates · Oxidative phosphorylation efficiency [SDE.BE]Environmental Sciences/Biodiversity and Ecology Teulier, Loïc Rey, Benjamin Tornos, Jérémy Le Coadic, Marion Monternier, Pierre-Axel Bourguignon, Aurore Dolmazon, Virginie Romestaing, Caroline Rouanet, Jean-Louis Duchamp, Claude, Roussel, Damien Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
topic_facet |
Metabolism · Mitochondria · Skeletal muscle · Energy substrates · Oxidative phosphorylation efficiency [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The passage from shore to marine life is a critical step in the development of juvenile penguins and is characterized by a fuel selection towards lipid oxida- tion concomitant to an enhancement of lipid-induced ther- mogenesis. However, mechanisms of such thermogenic improvement at fledging remain undefined. We used two different groups of pre-fledging king penguins (Apteno- dytes patagonicus) to investigate the specific contribution of cold exposure during water immersion to lipid metabo- lism. Terrestrial penguins that had never been immersed in cold water were compared with experimentally cold-water immersed juveniles. Experimentally immersed penguins underwent ten successive immersions at approximately 9–10 °C for 5 h over 3 weeks. We evaluated adaptive ther- mogenesis by measuring body temperature, metabolic rate and shivering activity in fully immersed penguins exposed to water temperatures ranging from 12 to 29 °C. Both never-immersed and experimentally immersed penguins were able to maintain their homeothermy in cold water, exhibiting similar thermogenic activity. In vivo, perfusion of lipid emulsion at thermoneutrality induced a twofold larger calorigenic response in experimentally immersed than in never-immersed birds. In vitro, the respiratory rates and the oxidative phosphorylation efficiency of isolated muscle mitochondria were not improved with cold-water immersions. The present study shows that acclimation to cold water only partially reproduced the fuel selection towards lipid oxidation that characterizes penguin acclima- tization to marine life. |
author2 |
Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Teulier, Loïc Rey, Benjamin Tornos, Jérémy Le Coadic, Marion Monternier, Pierre-Axel Bourguignon, Aurore Dolmazon, Virginie Romestaing, Caroline Rouanet, Jean-Louis Duchamp, Claude, Roussel, Damien |
author_facet |
Teulier, Loïc Rey, Benjamin Tornos, Jérémy Le Coadic, Marion Monternier, Pierre-Axel Bourguignon, Aurore Dolmazon, Virginie Romestaing, Caroline Rouanet, Jean-Louis Duchamp, Claude, Roussel, Damien |
author_sort |
Teulier, Loïc |
title |
Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
title_short |
Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
title_full |
Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
title_fullStr |
Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
title_full_unstemmed |
Lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
title_sort |
lipid-induced thermogenesis is up-regulated by the first cold-water immersions in juvenile penguins |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal-sde.archives-ouvertes.fr/hal-01332835 https://doi.org/10.1007/s00360-016-0975-3 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 0174-1578 EISSN: 1432-136X Journal of Comparative Physiology B https://hal-sde.archives-ouvertes.fr/hal-01332835 Journal of Comparative Physiology B, Springer Verlag, 2016, 186, pp.639-650. ⟨10.1007/s00360-016-0975-3⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00360-016-0975-3 hal-01332835 https://hal-sde.archives-ouvertes.fr/hal-01332835 doi:10.1007/s00360-016-0975-3 |
op_doi |
https://doi.org/10.1007/s00360-016-0975-3 |
container_title |
Journal of Comparative Physiology B |
container_volume |
186 |
container_issue |
5 |
container_start_page |
639 |
op_container_end_page |
650 |
_version_ |
1766057932083953664 |