Seasonal Hypometabolism in Female Moose
How animals respond to a changing environment is a key question in ecological research. Animals living at higher latitudes are exposed to pronounced seasonal differences in both climate and in resource availability. Endotherms living in those environments have the ability to maintain a constant high...
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Online Access: | https://hdl.handle.net/11250/2761737 https://doi.org/10.3389/fevo.2020.00107 |
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fthsinnlandet:oai:brage.inn.no:11250/2761737 2024-03-03T08:36:22+00:00 Seasonal Hypometabolism in Female Moose Græsli, Anne Randi Thiel, Alexandra Fuchs, Boris Singh, Navinder J. Stenbacka, Fredrik Ericsson, Göran Neumann, Wiebke Arnemo, Jon Martin Evans, Alina L. 2020 application/pdf https://hdl.handle.net/11250/2761737 https://doi.org/10.3389/fevo.2020.00107 eng eng Frontiers in Ecology and Evolution. 2020, 8, 107 urn:issn:2296-701X https://hdl.handle.net/11250/2761737 https://doi.org/10.3389/fevo.2020.00107 cristin:1834872 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 8 Frontiers in Ecology and Evolution 107 activity Alces alces body temperature global positioning system heart rate metabolic rate moose seasonal variation VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2020 fthsinnlandet https://doi.org/10.3389/fevo.2020.00107 2024-02-02T12:42:22Z How animals respond to a changing environment is a key question in ecological research. Animals living at higher latitudes are exposed to pronounced seasonal differences in both climate and in resource availability. Endotherms living in those environments have the ability to maintain a constant high body temperature (Tb), over a wide range of ambient temperatures (Ta). Nonetheless, many endotherms display seasonal shifts in metabolic rate (MR). Here, we studied the annual and circadian cycle of Tb and heart rate (HR) in female moose (Alces alces) in relation to activity and Ta. HR also can be used as a proxy of MR to calculate energy budgets. We deployed biologgers to 12 free-ranging female moose; a temperature sensor in the rumen, a HR logger subcutaneously, and a GPS collar equipped with acceleration and Ta sensors. We documented seasonal differences in Tb, HR and activity of moose, with lower levels during winter and higher values during summer. The highest daily mean Tb and HR were 38.64◦C (10 July) and 71.9 beats per minute (bpm; 26 June), whereas the lowest daily mean Tb and HR were 38.03◦C (17 March) and 40.5 bpm (6 March). High-resolution Tb and activity data allowed us to detect circadian and ultradian rhythmicity throughout the year. Based on previous calibration studies, MR decreased by 60% from the highest to the lowest point. Our results demonstrate hypometabolism including lower Tb and HR during winter as a strategy to reduce energy expenditure during periods with colder climate and limited availability of resources. publishedVersion Article in Journal/Newspaper Alces alces Høgskolen i Innlandet: Brage INN Frontiers in Ecology and Evolution 8 |
institution |
Open Polar |
collection |
Høgskolen i Innlandet: Brage INN |
op_collection_id |
fthsinnlandet |
language |
English |
topic |
activity Alces alces body temperature global positioning system heart rate metabolic rate moose seasonal variation VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
activity Alces alces body temperature global positioning system heart rate metabolic rate moose seasonal variation VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Græsli, Anne Randi Thiel, Alexandra Fuchs, Boris Singh, Navinder J. Stenbacka, Fredrik Ericsson, Göran Neumann, Wiebke Arnemo, Jon Martin Evans, Alina L. Seasonal Hypometabolism in Female Moose |
topic_facet |
activity Alces alces body temperature global positioning system heart rate metabolic rate moose seasonal variation VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
How animals respond to a changing environment is a key question in ecological research. Animals living at higher latitudes are exposed to pronounced seasonal differences in both climate and in resource availability. Endotherms living in those environments have the ability to maintain a constant high body temperature (Tb), over a wide range of ambient temperatures (Ta). Nonetheless, many endotherms display seasonal shifts in metabolic rate (MR). Here, we studied the annual and circadian cycle of Tb and heart rate (HR) in female moose (Alces alces) in relation to activity and Ta. HR also can be used as a proxy of MR to calculate energy budgets. We deployed biologgers to 12 free-ranging female moose; a temperature sensor in the rumen, a HR logger subcutaneously, and a GPS collar equipped with acceleration and Ta sensors. We documented seasonal differences in Tb, HR and activity of moose, with lower levels during winter and higher values during summer. The highest daily mean Tb and HR were 38.64◦C (10 July) and 71.9 beats per minute (bpm; 26 June), whereas the lowest daily mean Tb and HR were 38.03◦C (17 March) and 40.5 bpm (6 March). High-resolution Tb and activity data allowed us to detect circadian and ultradian rhythmicity throughout the year. Based on previous calibration studies, MR decreased by 60% from the highest to the lowest point. Our results demonstrate hypometabolism including lower Tb and HR during winter as a strategy to reduce energy expenditure during periods with colder climate and limited availability of resources. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Græsli, Anne Randi Thiel, Alexandra Fuchs, Boris Singh, Navinder J. Stenbacka, Fredrik Ericsson, Göran Neumann, Wiebke Arnemo, Jon Martin Evans, Alina L. |
author_facet |
Græsli, Anne Randi Thiel, Alexandra Fuchs, Boris Singh, Navinder J. Stenbacka, Fredrik Ericsson, Göran Neumann, Wiebke Arnemo, Jon Martin Evans, Alina L. |
author_sort |
Græsli, Anne Randi |
title |
Seasonal Hypometabolism in Female Moose |
title_short |
Seasonal Hypometabolism in Female Moose |
title_full |
Seasonal Hypometabolism in Female Moose |
title_fullStr |
Seasonal Hypometabolism in Female Moose |
title_full_unstemmed |
Seasonal Hypometabolism in Female Moose |
title_sort |
seasonal hypometabolism in female moose |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2761737 https://doi.org/10.3389/fevo.2020.00107 |
genre |
Alces alces |
genre_facet |
Alces alces |
op_source |
8 Frontiers in Ecology and Evolution 107 |
op_relation |
Frontiers in Ecology and Evolution. 2020, 8, 107 urn:issn:2296-701X https://hdl.handle.net/11250/2761737 https://doi.org/10.3389/fevo.2020.00107 cristin:1834872 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.3389/fevo.2020.00107 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
8 |
_version_ |
1792502558550392832 |