Flexible energy-saving strategies in female temperate-zone bats
Torpor is characterized by an extreme reduction in metabolism and a common energy-saving strategy of heterothermic animals. Torpor is often associated with cold temperatures, but in the last decades, more diverse and flexible forms of torpor have been described. For example, tropical bat species mai...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550788/ http://www.ncbi.nlm.nih.gov/pubmed/35939092 https://doi.org/10.1007/s00360-022-01452-7 |
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ftpubmed:oai:pubmedcentral.nih.gov:9550788 2023-05-15T17:48:38+02:00 Flexible energy-saving strategies in female temperate-zone bats Keicher, Lara Shipley, J. Ryan Komar, Ewa Ruczyński, Ireneusz Schaeffer, Paul J. Dechmann, Dina K. N. 2022-08-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550788/ http://www.ncbi.nlm.nih.gov/pubmed/35939092 https://doi.org/10.1007/s00360-022-01452-7 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550788/ http://www.ncbi.nlm.nih.gov/pubmed/35939092 http://dx.doi.org/10.1007/s00360-022-01452-7 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY J Comp Physiol B Original Paper Text 2022 ftpubmed https://doi.org/10.1007/s00360-022-01452-7 2022-10-16T00:48:01Z Torpor is characterized by an extreme reduction in metabolism and a common energy-saving strategy of heterothermic animals. Torpor is often associated with cold temperatures, but in the last decades, more diverse and flexible forms of torpor have been described. For example, tropical bat species maintain a low metabolism and heart rate at high ambient and body temperatures. We investigated whether bats (Nyctalus noctula) from the cooler temperate European regions also show this form of torpor with metabolic inhibition at high body temperatures, and whether this would be as pronounced in reproductive as in non-reproductive bats. We simultaneously measured metabolic rate, heart rate, and skin temperature in non-reproductive and pregnant females at a range of ambient temperatures. We found that they can decouple metabolic rate and heart rate from body temperature: they maintained an extremely low metabolism and heart rate when exposed to ambient temperatures changing from 0 to 32.5 °C, irrespective of reproductive status. When we simulated natural temperature conditions, all non-reproductive bats used torpor throughout the experiment. Pregnant bats used variable strategies from torpor, to maintaining normothermy, or a combination of both. Even a short torpor bout during the day saved up to 33% of the bats' total energy expenditure. Especially at higher temperatures, heart rate was a much better predictor of metabolic rate than skin temperature. We suggest that the capability to flexibly save energy across a range of ambient temperatures within and between reproductive states may be an important ability of these bats and possibly other temperate-zone heterotherms. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00360-022-01452-7. Text Nyctalus noctula PubMed Central (PMC) Journal of Comparative Physiology B 192 6 805 814 |
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Original Paper |
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Original Paper Keicher, Lara Shipley, J. Ryan Komar, Ewa Ruczyński, Ireneusz Schaeffer, Paul J. Dechmann, Dina K. N. Flexible energy-saving strategies in female temperate-zone bats |
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Original Paper |
description |
Torpor is characterized by an extreme reduction in metabolism and a common energy-saving strategy of heterothermic animals. Torpor is often associated with cold temperatures, but in the last decades, more diverse and flexible forms of torpor have been described. For example, tropical bat species maintain a low metabolism and heart rate at high ambient and body temperatures. We investigated whether bats (Nyctalus noctula) from the cooler temperate European regions also show this form of torpor with metabolic inhibition at high body temperatures, and whether this would be as pronounced in reproductive as in non-reproductive bats. We simultaneously measured metabolic rate, heart rate, and skin temperature in non-reproductive and pregnant females at a range of ambient temperatures. We found that they can decouple metabolic rate and heart rate from body temperature: they maintained an extremely low metabolism and heart rate when exposed to ambient temperatures changing from 0 to 32.5 °C, irrespective of reproductive status. When we simulated natural temperature conditions, all non-reproductive bats used torpor throughout the experiment. Pregnant bats used variable strategies from torpor, to maintaining normothermy, or a combination of both. Even a short torpor bout during the day saved up to 33% of the bats' total energy expenditure. Especially at higher temperatures, heart rate was a much better predictor of metabolic rate than skin temperature. We suggest that the capability to flexibly save energy across a range of ambient temperatures within and between reproductive states may be an important ability of these bats and possibly other temperate-zone heterotherms. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00360-022-01452-7. |
format |
Text |
author |
Keicher, Lara Shipley, J. Ryan Komar, Ewa Ruczyński, Ireneusz Schaeffer, Paul J. Dechmann, Dina K. N. |
author_facet |
Keicher, Lara Shipley, J. Ryan Komar, Ewa Ruczyński, Ireneusz Schaeffer, Paul J. Dechmann, Dina K. N. |
author_sort |
Keicher, Lara |
title |
Flexible energy-saving strategies in female temperate-zone bats |
title_short |
Flexible energy-saving strategies in female temperate-zone bats |
title_full |
Flexible energy-saving strategies in female temperate-zone bats |
title_fullStr |
Flexible energy-saving strategies in female temperate-zone bats |
title_full_unstemmed |
Flexible energy-saving strategies in female temperate-zone bats |
title_sort |
flexible energy-saving strategies in female temperate-zone bats |
publisher |
Springer Berlin Heidelberg |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550788/ http://www.ncbi.nlm.nih.gov/pubmed/35939092 https://doi.org/10.1007/s00360-022-01452-7 |
genre |
Nyctalus noctula |
genre_facet |
Nyctalus noctula |
op_source |
J Comp Physiol B |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9550788/ http://www.ncbi.nlm.nih.gov/pubmed/35939092 http://dx.doi.org/10.1007/s00360-022-01452-7 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
op_doi |
https://doi.org/10.1007/s00360-022-01452-7 |
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Journal of Comparative Physiology B |
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192 |
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6 |
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805 |
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814 |
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