Emperor penguin body surfaces cool below air temperature
Emperor penguins Aptenodytes forsteri are able to survive the harsh Antarctic climate because of specialized anatomical, physiological and behavioural adaptations for minimizing heat loss. Heat transfer theory predicts that metabolic heat loss in this species will mostly depend on radiative and conv...
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ftpubmed:oai:pubmedcentral.nih.gov:3645025 2023-05-15T13:59:29+02:00 Emperor penguin body surfaces cool below air temperature McCafferty, D. J. Gilbert, C. Thierry, A.-M. Currie, J. Le Maho, Y. Ancel, A. 2013-06-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3645025 http://www.ncbi.nlm.nih.gov/pubmed/23466479 https://doi.org/10.1098/rsbl.2012.1192 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/23466479 http://dx.doi.org/10.1098/rsbl.2012.1192 © 2013 The Author(s) Published by the Royal Society. All rights reserved. Physiology Text 2013 ftpubmed https://doi.org/10.1098/rsbl.2012.1192 2014-06-29T00:32:36Z Emperor penguins Aptenodytes forsteri are able to survive the harsh Antarctic climate because of specialized anatomical, physiological and behavioural adaptations for minimizing heat loss. Heat transfer theory predicts that metabolic heat loss in this species will mostly depend on radiative and convective cooling. To examine this, thermal imaging of emperor penguins was undertaken at the breeding colony of Pointe Géologie in Terre Adélie (66°40′ S 140° 01′ E), Antarctica in June 2008. During clear sky conditions, most outer surfaces of the body were colder than surrounding sub-zero air owing to radiative cooling. In these conditions, the feather surface will paradoxically gain heat by convection from surrounding air. However, owing to the low thermal conductivity of plumage any heat transfer to the skin surface will be negligible. Future thermal imaging studies are likely to yield further insights into the adaptations of this species to the Antarctic climate. Text Antarc* Antarctic Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins PubMed Central (PMC) Antarctic Pointe-Géologie ENVELOPE(140.017,140.017,-66.667,-66.667) Terre Adélie ENVELOPE(139.000,139.000,-67.000,-67.000) Terre-Adélie ENVELOPE(138.991,138.991,-59.999,-59.999) The Antarctic Biology Letters 9 3 20121192 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
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Physiology |
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Physiology McCafferty, D. J. Gilbert, C. Thierry, A.-M. Currie, J. Le Maho, Y. Ancel, A. Emperor penguin body surfaces cool below air temperature |
topic_facet |
Physiology |
description |
Emperor penguins Aptenodytes forsteri are able to survive the harsh Antarctic climate because of specialized anatomical, physiological and behavioural adaptations for minimizing heat loss. Heat transfer theory predicts that metabolic heat loss in this species will mostly depend on radiative and convective cooling. To examine this, thermal imaging of emperor penguins was undertaken at the breeding colony of Pointe Géologie in Terre Adélie (66°40′ S 140° 01′ E), Antarctica in June 2008. During clear sky conditions, most outer surfaces of the body were colder than surrounding sub-zero air owing to radiative cooling. In these conditions, the feather surface will paradoxically gain heat by convection from surrounding air. However, owing to the low thermal conductivity of plumage any heat transfer to the skin surface will be negligible. Future thermal imaging studies are likely to yield further insights into the adaptations of this species to the Antarctic climate. |
format |
Text |
author |
McCafferty, D. J. Gilbert, C. Thierry, A.-M. Currie, J. Le Maho, Y. Ancel, A. |
author_facet |
McCafferty, D. J. Gilbert, C. Thierry, A.-M. Currie, J. Le Maho, Y. Ancel, A. |
author_sort |
McCafferty, D. J. |
title |
Emperor penguin body surfaces cool below air temperature |
title_short |
Emperor penguin body surfaces cool below air temperature |
title_full |
Emperor penguin body surfaces cool below air temperature |
title_fullStr |
Emperor penguin body surfaces cool below air temperature |
title_full_unstemmed |
Emperor penguin body surfaces cool below air temperature |
title_sort |
emperor penguin body surfaces cool below air temperature |
publisher |
The Royal Society |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3645025 http://www.ncbi.nlm.nih.gov/pubmed/23466479 https://doi.org/10.1098/rsbl.2012.1192 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(139.000,139.000,-67.000,-67.000) ENVELOPE(138.991,138.991,-59.999,-59.999) |
geographic |
Antarctic Pointe-Géologie Terre Adélie Terre-Adélie The Antarctic |
geographic_facet |
Antarctic Pointe-Géologie Terre Adélie Terre-Adélie The Antarctic |
genre |
Antarc* Antarctic Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins |
genre_facet |
Antarc* Antarctic Antarctica Aptenodytes forsteri E. Antarctica Emperor penguins |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/23466479 http://dx.doi.org/10.1098/rsbl.2012.1192 |
op_rights |
© 2013 The Author(s) Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rsbl.2012.1192 |
container_title |
Biology Letters |
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9 |
container_issue |
3 |
container_start_page |
20121192 |
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1766268056644878336 |