Body surface rewarming in fully and partially hypothermic king penguins
Abstract Penguins face a major thermal transition when returning to land in a hypothermic state after a foraging trip. Uninsulated appendages (flippers and feet) could provide flexible heat exchange during subsequent rewarming. Here, we tested the hypothesis that peripheral vasodilation could be del...
Published in: | Journal of Comparative Physiology B |
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2020
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Online Access: | http://dx.doi.org/10.1007/s00360-020-01294-1 https://link.springer.com/content/pdf/10.1007/s00360-020-01294-1.pdf https://link.springer.com/article/10.1007/s00360-020-01294-1/fulltext.html |
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crspringernat:10.1007/s00360-020-01294-1 2023-05-15T17:03:55+02:00 Body surface rewarming in fully and partially hypothermic king penguins Lewden, Agnès Nord, Andreas Bonnet, Batshéva Chauvet, Florent Ancel, André McCafferty, Dominic J. Company of Biologists Institut Polaire Français Paul Emile Victor Ministère de l’Enseignement Supérieur, de la Recherche Scientifique et des Technologies de l'Information et de la Communication Birgit och Sven Håkan Ohlssons Stiftelse 2020 http://dx.doi.org/10.1007/s00360-020-01294-1 https://link.springer.com/content/pdf/10.1007/s00360-020-01294-1.pdf https://link.springer.com/article/10.1007/s00360-020-01294-1/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Journal of Comparative Physiology B volume 190, issue 5, page 597-609 ISSN 0174-1578 1432-136X Endocrinology Animal Science and Zoology Biochemistry Ecology, Evolution, Behavior and Systematics Physiology journal-article 2020 crspringernat https://doi.org/10.1007/s00360-020-01294-1 2022-01-04T16:10:47Z Abstract Penguins face a major thermal transition when returning to land in a hypothermic state after a foraging trip. Uninsulated appendages (flippers and feet) could provide flexible heat exchange during subsequent rewarming. Here, we tested the hypothesis that peripheral vasodilation could be delayed during this recovery stage. To this end, we designed an experiment to examine patterns of surface rewarming in fully hypothermic (the cloaca and peripheral regions (here; flippers, feet and the breast) < 37 °C) and partially hypothermic (cloaca at normothermia ≥ 37 °C, but periphery at hypothermia) king penguins ( Aptenodytes patagonicus ) when they rewarmed in the laboratory. Both groups rewarmed during the 21 min observation period, but the temperature changes were larger in fully than in partially hypothermic birds. Moreover, we observed a 5 min delay of peripheral temperature in fully compared to partially hypothermic birds, suggesting that this process was impacted by low internal temperature. To investigate whether our laboratory data were applicable to field conditions, we also recorded surface temperatures of free-ranging penguins after they came ashore to the colony. Initial surface temperatures were lower in these birds compared to in those that rewarmed in the laboratory, and changed less over a comparable period of time on land. This could be explained both by environmental conditions and possible handling-induced thermogenesis in the laboratory. Nevertheless, this study demonstrated that appendage vasodilation is flexibly used during rewarming and that recovery may be influenced by both internal temperature and environmental conditions when penguins transition from sea to land. Article in Journal/Newspaper King Penguins Springer Nature (via Crossref) Journal of Comparative Physiology B 190 5 597 609 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Endocrinology Animal Science and Zoology Biochemistry Ecology, Evolution, Behavior and Systematics Physiology |
spellingShingle |
Endocrinology Animal Science and Zoology Biochemistry Ecology, Evolution, Behavior and Systematics Physiology Lewden, Agnès Nord, Andreas Bonnet, Batshéva Chauvet, Florent Ancel, André McCafferty, Dominic J. Body surface rewarming in fully and partially hypothermic king penguins |
topic_facet |
Endocrinology Animal Science and Zoology Biochemistry Ecology, Evolution, Behavior and Systematics Physiology |
description |
Abstract Penguins face a major thermal transition when returning to land in a hypothermic state after a foraging trip. Uninsulated appendages (flippers and feet) could provide flexible heat exchange during subsequent rewarming. Here, we tested the hypothesis that peripheral vasodilation could be delayed during this recovery stage. To this end, we designed an experiment to examine patterns of surface rewarming in fully hypothermic (the cloaca and peripheral regions (here; flippers, feet and the breast) < 37 °C) and partially hypothermic (cloaca at normothermia ≥ 37 °C, but periphery at hypothermia) king penguins ( Aptenodytes patagonicus ) when they rewarmed in the laboratory. Both groups rewarmed during the 21 min observation period, but the temperature changes were larger in fully than in partially hypothermic birds. Moreover, we observed a 5 min delay of peripheral temperature in fully compared to partially hypothermic birds, suggesting that this process was impacted by low internal temperature. To investigate whether our laboratory data were applicable to field conditions, we also recorded surface temperatures of free-ranging penguins after they came ashore to the colony. Initial surface temperatures were lower in these birds compared to in those that rewarmed in the laboratory, and changed less over a comparable period of time on land. This could be explained both by environmental conditions and possible handling-induced thermogenesis in the laboratory. Nevertheless, this study demonstrated that appendage vasodilation is flexibly used during rewarming and that recovery may be influenced by both internal temperature and environmental conditions when penguins transition from sea to land. |
author2 |
Company of Biologists Institut Polaire Français Paul Emile Victor Ministère de l’Enseignement Supérieur, de la Recherche Scientifique et des Technologies de l'Information et de la Communication Birgit och Sven Håkan Ohlssons Stiftelse |
format |
Article in Journal/Newspaper |
author |
Lewden, Agnès Nord, Andreas Bonnet, Batshéva Chauvet, Florent Ancel, André McCafferty, Dominic J. |
author_facet |
Lewden, Agnès Nord, Andreas Bonnet, Batshéva Chauvet, Florent Ancel, André McCafferty, Dominic J. |
author_sort |
Lewden, Agnès |
title |
Body surface rewarming in fully and partially hypothermic king penguins |
title_short |
Body surface rewarming in fully and partially hypothermic king penguins |
title_full |
Body surface rewarming in fully and partially hypothermic king penguins |
title_fullStr |
Body surface rewarming in fully and partially hypothermic king penguins |
title_full_unstemmed |
Body surface rewarming in fully and partially hypothermic king penguins |
title_sort |
body surface rewarming in fully and partially hypothermic king penguins |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s00360-020-01294-1 https://link.springer.com/content/pdf/10.1007/s00360-020-01294-1.pdf https://link.springer.com/article/10.1007/s00360-020-01294-1/fulltext.html |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
Journal of Comparative Physiology B volume 190, issue 5, page 597-609 ISSN 0174-1578 1432-136X |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00360-020-01294-1 |
container_title |
Journal of Comparative Physiology B |
container_volume |
190 |
container_issue |
5 |
container_start_page |
597 |
op_container_end_page |
609 |
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1766057899823464448 |