Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ...
Background: Most biological functions are synchronized to the environmental light:dark cycle via a circadian timekeeping system. Bears exhibit shallow torpor combined with metabolic suppression during winter dormancy. We sought to confirm that free-running circadian rhythms of body temperature (Tb)...
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Online Access: | https://dx.doi.org/10.5061/dryad.mg430 https://datadryad.org/stash/dataset/doi:10.5061/dryad.mg430 |
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ftdatacite:10.5061/dryad.mg430 2024-02-04T10:05:07+01:00 Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... Jansen, Heiko T. 2016 https://dx.doi.org/10.5061/dryad.mg430 https://datadryad.org/stash/dataset/doi:10.5061/dryad.mg430 en eng Dryad https://dx.doi.org/10.1186/s12983-016-0173-x Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 Ursus arctos Hibernation Luciferase Clock Gene bear Dataset dataset 2016 ftdatacite https://doi.org/10.5061/dryad.mg43010.1186/s12983-016-0173-x 2024-01-05T04:51:50Z Background: Most biological functions are synchronized to the environmental light:dark cycle via a circadian timekeeping system. Bears exhibit shallow torpor combined with metabolic suppression during winter dormancy. We sought to confirm that free-running circadian rhythms of body temperature (Tb) and activity were expressed in torpid grizzly (brown) bears and that they were functionally responsive to environmental light. We also measured activity and ambient light exposures in denning wild bears to determine if rhythms were evident and what the photic conditions of their natural dens were. Lastly, we used cultured skin fibroblasts obtained from captive torpid bears to assess molecular clock operation in peripheral tissues. Circadian parameters were estimated using robust wavelet transforms and maximum entropy spectral analyses. Results: Captive grizzly bears housed in constant darkness during winter dormancy expressed circadian rhythms of activity and Tb. The rhythm period of juvenile bears was ... : FronZool2016_FINZ-D-16-00043R2xlsx and csv files containing bear actigraphy and light data (lux) to accompany manuscript. Also included are body temperature data. ... Dataset Ursus arctos DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Ursus arctos Hibernation Luciferase Clock Gene bear |
spellingShingle |
Ursus arctos Hibernation Luciferase Clock Gene bear Jansen, Heiko T. Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
topic_facet |
Ursus arctos Hibernation Luciferase Clock Gene bear |
description |
Background: Most biological functions are synchronized to the environmental light:dark cycle via a circadian timekeeping system. Bears exhibit shallow torpor combined with metabolic suppression during winter dormancy. We sought to confirm that free-running circadian rhythms of body temperature (Tb) and activity were expressed in torpid grizzly (brown) bears and that they were functionally responsive to environmental light. We also measured activity and ambient light exposures in denning wild bears to determine if rhythms were evident and what the photic conditions of their natural dens were. Lastly, we used cultured skin fibroblasts obtained from captive torpid bears to assess molecular clock operation in peripheral tissues. Circadian parameters were estimated using robust wavelet transforms and maximum entropy spectral analyses. Results: Captive grizzly bears housed in constant darkness during winter dormancy expressed circadian rhythms of activity and Tb. The rhythm period of juvenile bears was ... : FronZool2016_FINZ-D-16-00043R2xlsx and csv files containing bear actigraphy and light data (lux) to accompany manuscript. Also included are body temperature data. ... |
format |
Dataset |
author |
Jansen, Heiko T. |
author_facet |
Jansen, Heiko T. |
author_sort |
Jansen, Heiko T. |
title |
Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
title_short |
Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
title_full |
Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
title_fullStr |
Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
title_full_unstemmed |
Data from: The bear circadian clock doesn't 'sleep' during winter dormancy ... |
title_sort |
data from: the bear circadian clock doesn't 'sleep' during winter dormancy ... |
publisher |
Dryad |
publishDate |
2016 |
url |
https://dx.doi.org/10.5061/dryad.mg430 https://datadryad.org/stash/dataset/doi:10.5061/dryad.mg430 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
https://dx.doi.org/10.1186/s12983-016-0173-x |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.5061/dryad.mg43010.1186/s12983-016-0173-x |
_version_ |
1789974086083936256 |