Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea)
Organisms use circadian rhythms to anticipate and exploit daily environmental oscillations. While circadian rhythms are of clear importance for inhabitants of tropic and temperate latitudes, its role for permanent residents of the polar regions is less well understood. The high Arctic Svalbard ptarm...
Published in: | Frontiers in Physiology |
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Online Access: | https://lup.lub.lu.se/record/574f5ba0-7d26-4008-b247-9c4f548e8120 https://doi.org/10.3389/fphys.2021.633866 |
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ftulundlup:oai:lup.lub.lu.se:574f5ba0-7d26-4008-b247-9c4f548e8120 2024-05-19T07:34:56+00:00 Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) Appenroth, Daniel Nord, Andreas Hazlerigg, David G. Wagner, Gabriela C. 2021 https://lup.lub.lu.se/record/574f5ba0-7d26-4008-b247-9c4f548e8120 https://doi.org/10.3389/fphys.2021.633866 eng eng Frontiers Media S. A. https://lup.lub.lu.se/record/574f5ba0-7d26-4008-b247-9c4f548e8120 http://dx.doi.org/10.3389/fphys.2021.633866 scopus:85102933976 pmid:33762966 Frontiers in Physiology; 12, no 633866 (2021) ISSN: 1664-042X Zoology Arctic chronobiology circadian rhythm heterothermy photoperiod Svalbard ptarmigan thermoregulation contributiontojournal/article info:eu-repo/semantics/article text 2021 ftulundlup https://doi.org/10.3389/fphys.2021.633866 2024-04-23T23:53:58Z Organisms use circadian rhythms to anticipate and exploit daily environmental oscillations. While circadian rhythms are of clear importance for inhabitants of tropic and temperate latitudes, its role for permanent residents of the polar regions is less well understood. The high Arctic Svalbard ptarmigan shows behavioral rhythmicity in presence of light-dark cycles but is arrhythmic during the polar day and polar night. This has been suggested to be an adaptation to the unique light environment of the Arctic. In this study, we examined regulatory aspects of the circadian control system in the Svalbard ptarmigan by recording core body temperature (Tb) alongside locomotor activity in captive birds under different photoperiods. We show that Tb and activity are rhythmic with a 24-h period under short (SP; L:D 6:18) and long photoperiod (LP; L:D 16:8). Under constant light and constant darkness, rhythmicity in Tb attenuates and activity shows signs of ultradian rhythmicity. Birds under SP also showed a rise in Tb preceding the light-on signal and any rise in activity, which proves that the light-on signal can be anticipated, most likely by a circadian system. Article in Journal/Newspaper Arctic Lagopus muta Lagopus muta hyperborea polar night Svalbard Lund University Publications (LUP) Frontiers in Physiology 12 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Zoology Arctic chronobiology circadian rhythm heterothermy photoperiod Svalbard ptarmigan thermoregulation |
spellingShingle |
Zoology Arctic chronobiology circadian rhythm heterothermy photoperiod Svalbard ptarmigan thermoregulation Appenroth, Daniel Nord, Andreas Hazlerigg, David G. Wagner, Gabriela C. Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
topic_facet |
Zoology Arctic chronobiology circadian rhythm heterothermy photoperiod Svalbard ptarmigan thermoregulation |
description |
Organisms use circadian rhythms to anticipate and exploit daily environmental oscillations. While circadian rhythms are of clear importance for inhabitants of tropic and temperate latitudes, its role for permanent residents of the polar regions is less well understood. The high Arctic Svalbard ptarmigan shows behavioral rhythmicity in presence of light-dark cycles but is arrhythmic during the polar day and polar night. This has been suggested to be an adaptation to the unique light environment of the Arctic. In this study, we examined regulatory aspects of the circadian control system in the Svalbard ptarmigan by recording core body temperature (Tb) alongside locomotor activity in captive birds under different photoperiods. We show that Tb and activity are rhythmic with a 24-h period under short (SP; L:D 6:18) and long photoperiod (LP; L:D 16:8). Under constant light and constant darkness, rhythmicity in Tb attenuates and activity shows signs of ultradian rhythmicity. Birds under SP also showed a rise in Tb preceding the light-on signal and any rise in activity, which proves that the light-on signal can be anticipated, most likely by a circadian system. |
format |
Article in Journal/Newspaper |
author |
Appenroth, Daniel Nord, Andreas Hazlerigg, David G. Wagner, Gabriela C. |
author_facet |
Appenroth, Daniel Nord, Andreas Hazlerigg, David G. Wagner, Gabriela C. |
author_sort |
Appenroth, Daniel |
title |
Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
title_short |
Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
title_full |
Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
title_fullStr |
Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
title_full_unstemmed |
Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
title_sort |
body temperature and activity rhythms under different photoperiods in high arctic svalbard ptarmigan (lagopus muta hyperborea) |
publisher |
Frontiers Media S. A. |
publishDate |
2021 |
url |
https://lup.lub.lu.se/record/574f5ba0-7d26-4008-b247-9c4f548e8120 https://doi.org/10.3389/fphys.2021.633866 |
genre |
Arctic Lagopus muta Lagopus muta hyperborea polar night Svalbard |
genre_facet |
Arctic Lagopus muta Lagopus muta hyperborea polar night Svalbard |
op_source |
Frontiers in Physiology; 12, no 633866 (2021) ISSN: 1664-042X |
op_relation |
https://lup.lub.lu.se/record/574f5ba0-7d26-4008-b247-9c4f548e8120 http://dx.doi.org/10.3389/fphys.2021.633866 scopus:85102933976 pmid:33762966 |
op_doi |
https://doi.org/10.3389/fphys.2021.633866 |
container_title |
Frontiers in Physiology |
container_volume |
12 |
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1799473177935478784 |