Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion
The ability to maintain a high core body temperature is a defining characteristic of all mammals, yet their diverse habitats present disparate thermal challenges that have led to specialized adaptations. Marine mammals inhabit a highly conductive environment. Their thermoregulatory capabilities far...
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ftpubmed:oai:pubmedcentral.nih.gov:9154795 2023-05-15T16:05:43+02:00 Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion Favilla, Arina B. Horning, Markus Costa, Daniel P. 2021-12-18 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9154795/ https://doi.org/10.1080/23328940.2021.1988817 en eng Taylor & Francis http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9154795/ http://dx.doi.org/10.1080/23328940.2021.1988817 © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY Temperature (Austin) Comprehensive Review Text 2021 ftpubmed https://doi.org/10.1080/23328940.2021.1988817 2022-06-05T01:14:52Z The ability to maintain a high core body temperature is a defining characteristic of all mammals, yet their diverse habitats present disparate thermal challenges that have led to specialized adaptations. Marine mammals inhabit a highly conductive environment. Their thermoregulatory capabilities far exceed our own despite having limited avenues of heat transfer. Additionally, marine mammals must balance their thermoregulatory demands with those associated with diving (i.e. oxygen conservation), both of which rely on cardiovascular adjustments. This review presents the progress and novel efforts in investigating marine mammal thermoregulation, with a particular focus on the role of peripheral perfusion. Early studies in marine mammal thermal physiology were primarily performed in the laboratory and provided foundational knowledge through in vivo experiments and ex vivo measurements. However, the ecological relevance of these findings remains unknown because comparable efforts on free-ranging animals have been limited. We demonstrate the utility of biologgers for studying their thermal adaptations in the context in which they evolved. Our preliminary results from freely diving northern elephant seals (Mirounga angustirostris) reveal blubber’s dynamic nature and the complex interaction between thermoregulation and the dive response due to the dual role of peripheral perfusion. Further exploring the potential use of biologgers for measuring physiological variables relevant to thermal physiology in other marine mammal species will enhance our understanding of the relative importance of morphology, physiology, and behavior for thermoregulation and overall homeostasis. Text Elephant Seals PubMed Central (PMC) Temperature 9 1 46 66 |
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Comprehensive Review |
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Comprehensive Review Favilla, Arina B. Horning, Markus Costa, Daniel P. Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
topic_facet |
Comprehensive Review |
description |
The ability to maintain a high core body temperature is a defining characteristic of all mammals, yet their diverse habitats present disparate thermal challenges that have led to specialized adaptations. Marine mammals inhabit a highly conductive environment. Their thermoregulatory capabilities far exceed our own despite having limited avenues of heat transfer. Additionally, marine mammals must balance their thermoregulatory demands with those associated with diving (i.e. oxygen conservation), both of which rely on cardiovascular adjustments. This review presents the progress and novel efforts in investigating marine mammal thermoregulation, with a particular focus on the role of peripheral perfusion. Early studies in marine mammal thermal physiology were primarily performed in the laboratory and provided foundational knowledge through in vivo experiments and ex vivo measurements. However, the ecological relevance of these findings remains unknown because comparable efforts on free-ranging animals have been limited. We demonstrate the utility of biologgers for studying their thermal adaptations in the context in which they evolved. Our preliminary results from freely diving northern elephant seals (Mirounga angustirostris) reveal blubber’s dynamic nature and the complex interaction between thermoregulation and the dive response due to the dual role of peripheral perfusion. Further exploring the potential use of biologgers for measuring physiological variables relevant to thermal physiology in other marine mammal species will enhance our understanding of the relative importance of morphology, physiology, and behavior for thermoregulation and overall homeostasis. |
format |
Text |
author |
Favilla, Arina B. Horning, Markus Costa, Daniel P. |
author_facet |
Favilla, Arina B. Horning, Markus Costa, Daniel P. |
author_sort |
Favilla, Arina B. |
title |
Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
title_short |
Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
title_full |
Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
title_fullStr |
Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
title_full_unstemmed |
Advances in thermal physiology of diving marine mammals: The dual role of peripheral perfusion |
title_sort |
advances in thermal physiology of diving marine mammals: the dual role of peripheral perfusion |
publisher |
Taylor & Francis |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9154795/ https://doi.org/10.1080/23328940.2021.1988817 |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_source |
Temperature (Austin) |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9154795/ http://dx.doi.org/10.1080/23328940.2021.1988817 |
op_rights |
© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
op_doi |
https://doi.org/10.1080/23328940.2021.1988817 |
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Temperature |
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66 |
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