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...
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Online Access: | https://doi.org/10.3389/fphys.2021.633866 https://doaj.org/article/eafa7fd0bef949aeb0f2ec0372bd6843 |
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ftdoajarticles:oai:doaj.org/article:eafa7fd0bef949aeb0f2ec0372bd6843 2023-05-15T14:46:37+02:00 Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) Daniel Appenroth Andreas Nord David G. Hazlerigg Gabriela C. Wagner 2021-03-01T00:00:00Z https://doi.org/10.3389/fphys.2021.633866 https://doaj.org/article/eafa7fd0bef949aeb0f2ec0372bd6843 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fphys.2021.633866/full https://doaj.org/toc/1664-042X 1664-042X doi:10.3389/fphys.2021.633866 https://doaj.org/article/eafa7fd0bef949aeb0f2ec0372bd6843 Frontiers in Physiology, Vol 12 (2021) Arctic chronobiology circadian rhythm heterothermy photoperiod thermoregulation Physiology QP1-981 article 2021 ftdoajarticles https://doi.org/10.3389/fphys.2021.633866 2022-12-31T10:19:02Z 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 Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Frontiers in Physiology 12 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic chronobiology circadian rhythm heterothermy photoperiod thermoregulation Physiology QP1-981 |
spellingShingle |
Arctic chronobiology circadian rhythm heterothermy photoperiod thermoregulation Physiology QP1-981 Daniel Appenroth Andreas Nord David G. Hazlerigg Gabriela C. Wagner Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea) |
topic_facet |
Arctic chronobiology circadian rhythm heterothermy photoperiod thermoregulation Physiology QP1-981 |
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 |
Daniel Appenroth Andreas Nord David G. Hazlerigg Gabriela C. Wagner |
author_facet |
Daniel Appenroth Andreas Nord David G. Hazlerigg Gabriela C. Wagner |
author_sort |
Daniel Appenroth |
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://doi.org/10.3389/fphys.2021.633866 https://doaj.org/article/eafa7fd0bef949aeb0f2ec0372bd6843 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
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, Vol 12 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fphys.2021.633866/full https://doaj.org/toc/1664-042X 1664-042X doi:10.3389/fphys.2021.633866 https://doaj.org/article/eafa7fd0bef949aeb0f2ec0372bd6843 |
op_doi |
https://doi.org/10.3389/fphys.2021.633866 |
container_title |
Frontiers in Physiology |
container_volume |
12 |
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1766317829393481728 |