Body temperature changes induced by huddling in breeding male emperor penguins.
International audience Huddling is the key energy-saving mechanism for emperor penguins to endure their 4-mo incubation fast during the Antarctic winter, but the underlying physiological mechanisms of this energy saving have remained elusive. The question is whether their deep body (core) temperatur...
Published in: | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
---|---|
Main Authors: | , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
|
Subjects: | |
Online Access: | https://hal.science/hal-00139593 https://doi.org/10.1152/ajpregu.00912.2005 |
id |
ftunivtoulon:oai:HAL:hal-00139593v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivtoulon:oai:HAL:hal-00139593v1 2024-02-11T09:57:12+01:00 Body temperature changes induced by huddling in breeding male emperor penguins. Gilbert, C. Le Maho, Y. Perret, M. Ancel, A. Laboratoire Epigenetique et Cancer Centre National de la Recherche Scientifique (CNRS) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Fonctionnement, évolution et mécanismes régulateurs des écosystèmes forestiers (ECOTROP) Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS) Groupe de Recherche en Informatique et Mathématiques (GRIM) Université de Toulon (UTLN) 2007 https://hal.science/hal-00139593 https://doi.org/10.1152/ajpregu.00912.2005 en eng HAL CCSD American Physiological Society info:eu-repo/semantics/altIdentifier/doi/10.1152/ajpregu.00912.2005 info:eu-repo/semantics/altIdentifier/pmid/16959865 hal-00139593 https://hal.science/hal-00139593 doi:10.1152/ajpregu.00912.2005 PUBMED: 16959865 ISSN: 0363-6119 EISSN: 1522-1490 AJP - Regulatory, Integrative and Comparative Physiology https://hal.science/hal-00139593 AJP - Regulatory, Integrative and Comparative Physiology, 2007, 292 (1), pp.R176-R185. ⟨10.1152/ajpregu.00912.2005⟩ huddling energy saving hypothermia emperor penguins Antarctica MESH: Animals MESH: Body Temperature MESH: Skin Temperature MESH: Social Behavior MESH: Spheniscidae MESH: Telemetry MESH: Body Weight MESH: Cold MESH: Eggs MESH: Energy Metabolism MESH: Female MESH: Male MESH: Nesting Behavior MESH: Sexual Behavior Animal [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2007 ftunivtoulon https://doi.org/10.1152/ajpregu.00912.2005 2024-01-23T23:35:28Z International audience Huddling is the key energy-saving mechanism for emperor penguins to endure their 4-mo incubation fast during the Antarctic winter, but the underlying physiological mechanisms of this energy saving have remained elusive. The question is whether their deep body (core) temperature may drop in association with energy sparing, taking into account that successful egg incubation requires a temperature of about 36 degrees C and that ambient temperatures of up to 37.5 degrees C may be reached within tight huddles. Using data loggers implanted into five unrestrained breeding males, we present here the first data on body temperature changes throughout the breeding cycle of emperor penguins, with particular emphasis on huddling bouts. During the pairing period, core temperature decreased progressively from 37.5 +/- 0.4 degrees C to 36.5 +/- 0.3 degrees C, associated with a significant temperature drop of 0.5 +/- 0.3 degrees C during huddling. In case of egg loss, body temperature continued to decrease to 35.5 +/- 0.4 degrees C, with a further 0.9 degrees C decrease during huddling. By contrast, a constant core temperature of 36.9 +/- 0.2 degrees C was maintained during successful incubation, even during huddling, suggesting a trade-off between the demands for successful egg incubation and energy saving. However, such a limited drop in body temperature cannot explain the observed energy savings of breeding emperor penguins. Furthermore, we never observed any signs of hyperthermia in huddling birds that were exposed to ambient temperatures as high as above 35 degrees C. We suggest that the energy savings of huddling birds is due to a metabolic depression, the extent of which depends on a reduction of body surface areas exposed to cold. Article in Journal/Newspaper Antarc* Antarctic Antarctica Emperor penguins Université de Toulon: HAL Antarctic The Antarctic American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 292 1 R176 R185 |
institution |
Open Polar |
collection |
Université de Toulon: HAL |
op_collection_id |
ftunivtoulon |
language |
English |
topic |
huddling energy saving hypothermia emperor penguins Antarctica MESH: Animals MESH: Body Temperature MESH: Skin Temperature MESH: Social Behavior MESH: Spheniscidae MESH: Telemetry MESH: Body Weight MESH: Cold MESH: Eggs MESH: Energy Metabolism MESH: Female MESH: Male MESH: Nesting Behavior MESH: Sexual Behavior Animal [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
spellingShingle |
huddling energy saving hypothermia emperor penguins Antarctica MESH: Animals MESH: Body Temperature MESH: Skin Temperature MESH: Social Behavior MESH: Spheniscidae MESH: Telemetry MESH: Body Weight MESH: Cold MESH: Eggs MESH: Energy Metabolism MESH: Female MESH: Male MESH: Nesting Behavior MESH: Sexual Behavior Animal [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Gilbert, C. Le Maho, Y. Perret, M. Ancel, A. Body temperature changes induced by huddling in breeding male emperor penguins. |
topic_facet |
huddling energy saving hypothermia emperor penguins Antarctica MESH: Animals MESH: Body Temperature MESH: Skin Temperature MESH: Social Behavior MESH: Spheniscidae MESH: Telemetry MESH: Body Weight MESH: Cold MESH: Eggs MESH: Energy Metabolism MESH: Female MESH: Male MESH: Nesting Behavior MESH: Sexual Behavior Animal [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
description |
International audience Huddling is the key energy-saving mechanism for emperor penguins to endure their 4-mo incubation fast during the Antarctic winter, but the underlying physiological mechanisms of this energy saving have remained elusive. The question is whether their deep body (core) temperature may drop in association with energy sparing, taking into account that successful egg incubation requires a temperature of about 36 degrees C and that ambient temperatures of up to 37.5 degrees C may be reached within tight huddles. Using data loggers implanted into five unrestrained breeding males, we present here the first data on body temperature changes throughout the breeding cycle of emperor penguins, with particular emphasis on huddling bouts. During the pairing period, core temperature decreased progressively from 37.5 +/- 0.4 degrees C to 36.5 +/- 0.3 degrees C, associated with a significant temperature drop of 0.5 +/- 0.3 degrees C during huddling. In case of egg loss, body temperature continued to decrease to 35.5 +/- 0.4 degrees C, with a further 0.9 degrees C decrease during huddling. By contrast, a constant core temperature of 36.9 +/- 0.2 degrees C was maintained during successful incubation, even during huddling, suggesting a trade-off between the demands for successful egg incubation and energy saving. However, such a limited drop in body temperature cannot explain the observed energy savings of breeding emperor penguins. Furthermore, we never observed any signs of hyperthermia in huddling birds that were exposed to ambient temperatures as high as above 35 degrees C. We suggest that the energy savings of huddling birds is due to a metabolic depression, the extent of which depends on a reduction of body surface areas exposed to cold. |
author2 |
Laboratoire Epigenetique et Cancer Centre National de la Recherche Scientifique (CNRS) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Fonctionnement, évolution et mécanismes régulateurs des écosystèmes forestiers (ECOTROP) Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS) Groupe de Recherche en Informatique et Mathématiques (GRIM) Université de Toulon (UTLN) |
format |
Article in Journal/Newspaper |
author |
Gilbert, C. Le Maho, Y. Perret, M. Ancel, A. |
author_facet |
Gilbert, C. Le Maho, Y. Perret, M. Ancel, A. |
author_sort |
Gilbert, C. |
title |
Body temperature changes induced by huddling in breeding male emperor penguins. |
title_short |
Body temperature changes induced by huddling in breeding male emperor penguins. |
title_full |
Body temperature changes induced by huddling in breeding male emperor penguins. |
title_fullStr |
Body temperature changes induced by huddling in breeding male emperor penguins. |
title_full_unstemmed |
Body temperature changes induced by huddling in breeding male emperor penguins. |
title_sort |
body temperature changes induced by huddling in breeding male emperor penguins. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00139593 https://doi.org/10.1152/ajpregu.00912.2005 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Emperor penguins |
genre_facet |
Antarc* Antarctic Antarctica Emperor penguins |
op_source |
ISSN: 0363-6119 EISSN: 1522-1490 AJP - Regulatory, Integrative and Comparative Physiology https://hal.science/hal-00139593 AJP - Regulatory, Integrative and Comparative Physiology, 2007, 292 (1), pp.R176-R185. ⟨10.1152/ajpregu.00912.2005⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1152/ajpregu.00912.2005 info:eu-repo/semantics/altIdentifier/pmid/16959865 hal-00139593 https://hal.science/hal-00139593 doi:10.1152/ajpregu.00912.2005 PUBMED: 16959865 |
op_doi |
https://doi.org/10.1152/ajpregu.00912.2005 |
container_title |
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
container_volume |
292 |
container_issue |
1 |
container_start_page |
R176 |
op_container_end_page |
R185 |
_version_ |
1790609495637884928 |