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Physiological reactions to capture in hibernating brown bears
Human disturbance can affect animal life history and even population dynamics. However, the consequences of these disturbances are difficult to measure. This is especially true for hibernating animals, which are highly vulnerable to disturbance, because hibernation is a process of major physiologica...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5156896/ https://www.ncbi.nlm.nih.gov/pubmed/27990289 http://dx.doi.org/10.1093/conphys/cow061 |
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author | Evans, Alina L. Singh, Navinder J. Fuchs, Boris Blanc, Stéphane Friebe, Andrea Laske, Timothy G. Frobert, Ole Swenson, Jon E. Arnemo, Jon M. |
author_facet | Evans, Alina L. Singh, Navinder J. Fuchs, Boris Blanc, Stéphane Friebe, Andrea Laske, Timothy G. Frobert, Ole Swenson, Jon E. Arnemo, Jon M. |
author_sort | Evans, Alina L. |
collection | PubMed |
description | Human disturbance can affect animal life history and even population dynamics. However, the consequences of these disturbances are difficult to measure. This is especially true for hibernating animals, which are highly vulnerable to disturbance, because hibernation is a process of major physiological changes, involving conservation of energy during a resource-depleted time of year. During the winters of 2011–15, we captured 15 subadult brown bears (Ursus arctos) and recorded their body temperatures (n = 11) and heart rates (n = 10) before, during and after capture using biologgers. We estimated the time for body temperature and heart rate to normalize after the capture event. We then evaluated the effect of the captures on the pattern and depth of hibernation and the day of den emergence by comparing the body temperature of captured bears with that of undisturbed subadult bears (n = 11). Both body temperature and heart rate increased during capture and returned to hibernation levels after 15–20 days. We showed that bears required 2–3 weeks to return to hibernation levels after winter captures, suggesting high metabolic costs during this period. There were also indications that the winter captures resulted in delayed den emergence. |
format | Online Article Text |
id | pubmed-5156896 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-51568962016-12-16 Physiological reactions to capture in hibernating brown bears Evans, Alina L. Singh, Navinder J. Fuchs, Boris Blanc, Stéphane Friebe, Andrea Laske, Timothy G. Frobert, Ole Swenson, Jon E. Arnemo, Jon M. Conserv Physiol Research Article Human disturbance can affect animal life history and even population dynamics. However, the consequences of these disturbances are difficult to measure. This is especially true for hibernating animals, which are highly vulnerable to disturbance, because hibernation is a process of major physiological changes, involving conservation of energy during a resource-depleted time of year. During the winters of 2011–15, we captured 15 subadult brown bears (Ursus arctos) and recorded their body temperatures (n = 11) and heart rates (n = 10) before, during and after capture using biologgers. We estimated the time for body temperature and heart rate to normalize after the capture event. We then evaluated the effect of the captures on the pattern and depth of hibernation and the day of den emergence by comparing the body temperature of captured bears with that of undisturbed subadult bears (n = 11). Both body temperature and heart rate increased during capture and returned to hibernation levels after 15–20 days. We showed that bears required 2–3 weeks to return to hibernation levels after winter captures, suggesting high metabolic costs during this period. There were also indications that the winter captures resulted in delayed den emergence. Oxford University Press 2016-12-15 /pmc/articles/PMC5156896/ /pubmed/27990289 http://dx.doi.org/10.1093/conphys/cow061 Text en © The Author 2016. Published by Oxford University Press and the Society for Experimental Biology. http://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/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Evans, Alina L. Singh, Navinder J. Fuchs, Boris Blanc, Stéphane Friebe, Andrea Laske, Timothy G. Frobert, Ole Swenson, Jon E. Arnemo, Jon M. Physiological reactions to capture in hibernating brown bears |
title | Physiological reactions to capture in hibernating brown bears |
title_full | Physiological reactions to capture in hibernating brown bears |
title_fullStr | Physiological reactions to capture in hibernating brown bears |
title_full_unstemmed | Physiological reactions to capture in hibernating brown bears |
title_short | Physiological reactions to capture in hibernating brown bears |
title_sort | physiological reactions to capture in hibernating brown bears |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5156896/ https://www.ncbi.nlm.nih.gov/pubmed/27990289 http://dx.doi.org/10.1093/conphys/cow061 |
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