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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ftdoajarticles:oai:doaj.org/article:326f97b3e4be472db7a3feb121e2c7e3 2023-05-15T13:12:59+02:00 Seasonal Hypometabolism in Female Moose Anne Randi Græsli Alexandra Thiel Boris Fuchs Navinder J. Singh Fredrik Stenbacka Göran Ericsson Wiebke Neumann Jon M. Arnemo Alina L. Evans 2020-05-01T00:00:00Z https://doi.org/10.3389/fevo.2020.00107 https://doaj.org/article/326f97b3e4be472db7a3feb121e2c7e3 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fevo.2020.00107/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2020.00107 https://doaj.org/article/326f97b3e4be472db7a3feb121e2c7e3 Frontiers in Ecology and Evolution, Vol 8 (2020) activity Alces alces body temperature global positioning system heart rate metabolic rate Evolution QH359-425 Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.3389/fevo.2020.00107 2022-12-31T11:09:25Z 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. Article in Journal/Newspaper Alces alces Directory of Open Access Journals: DOAJ Articles Frontiers in Ecology and Evolution 8 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
activity Alces alces body temperature global positioning system heart rate metabolic rate Evolution QH359-425 Ecology QH540-549.5 |
spellingShingle |
activity Alces alces body temperature global positioning system heart rate metabolic rate Evolution QH359-425 Ecology QH540-549.5 Anne Randi Græsli Alexandra Thiel Boris Fuchs Navinder J. Singh Fredrik Stenbacka Göran Ericsson Wiebke Neumann Jon M. Arnemo Alina L. Evans Seasonal Hypometabolism in Female Moose |
topic_facet |
activity Alces alces body temperature global positioning system heart rate metabolic rate Evolution QH359-425 Ecology QH540-549.5 |
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. |
format |
Article in Journal/Newspaper |
author |
Anne Randi Græsli Alexandra Thiel Boris Fuchs Navinder J. Singh Fredrik Stenbacka Göran Ericsson Wiebke Neumann Jon M. Arnemo Alina L. Evans |
author_facet |
Anne Randi Græsli Alexandra Thiel Boris Fuchs Navinder J. Singh Fredrik Stenbacka Göran Ericsson Wiebke Neumann Jon M. Arnemo Alina L. Evans |
author_sort |
Anne Randi Græsli |
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 |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fevo.2020.00107 https://doaj.org/article/326f97b3e4be472db7a3feb121e2c7e3 |
genre |
Alces alces |
genre_facet |
Alces alces |
op_source |
Frontiers in Ecology and Evolution, Vol 8 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fevo.2020.00107/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2020.00107 https://doaj.org/article/326f97b3e4be472db7a3feb121e2c7e3 |
op_doi |
https://doi.org/10.3389/fevo.2020.00107 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
8 |
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1766255357157441536 |