Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds
Circadian clocks are centrally involved in the regulation of daily behavioural and physiological processes. These clocks are synchronized to the 24 h day by external cues (Zeitgeber), the most important of which is the light–dark cycle. In polar environments, however, the strength of the Zeitgeber i...
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ftzenodo:oai:zenodo.org:4932453 2024-09-15T17:58:16+00:00 Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds Steiger, Silke S. Valcu, Mihai Spoelstra, Kamiel Helm, Barbara Wikelski, Martin Kempenaers, Bart 2013-07-01 https://doi.org/10.5061/dryad.4g1g0 unknown Zenodo https://doi.org/10.1098/rspb.2013.1016 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.4g1g0 oai:zenodo.org:4932453 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Phalaropus fulicarius continuous daylight Calidris melanotos Calcarius lapponicus Calidris pusilla info:eu-repo/semantics/other 2013 ftzenodo https://doi.org/10.5061/dryad.4g1g010.1098/rspb.2013.1016 2024-07-26T02:37:25Z Circadian clocks are centrally involved in the regulation of daily behavioural and physiological processes. These clocks are synchronized to the 24 h day by external cues (Zeitgeber), the most important of which is the light–dark cycle. In polar environments, however, the strength of the Zeitgeber is greatly reduced around the summer and winter solstices (continuous daylight or continuous darkness). How animals time their behaviour under such conditions has rarely been studied in the wild. Using a radio-telemetry-based system, we investigated daily activity rhythms under continuous daylight in Barrow, Alaska, throughout the breeding season in four bird species that differ in mating system and parental behaviour. We found substantial diversity in daily activity rhythms depending on species, sex and breeding stage. Individuals exhibited either robust, entrained 24 h activity cycles, were continuously active (arrhythmic) or showed 'free-running' activity cycles. In semipalmated sandpipers, a shorebird with biparental incubation, we show that the free-running rhythm is synchronized between pair mates. The diversity of diel time-keeping under continuous daylight emphasizes the plasticity of the circadian system, and the importance of the social and life-history context. Our results support the idea that circadian behaviour can be adaptively modified to enable species-specific time-keeping under polar conditions. Steiger_et_al_2013 Other/Unknown Material Barrow Phalaropus fulicarius Alaska Zenodo |
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Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Phalaropus fulicarius continuous daylight Calidris melanotos Calcarius lapponicus Calidris pusilla |
spellingShingle |
Phalaropus fulicarius continuous daylight Calidris melanotos Calcarius lapponicus Calidris pusilla Steiger, Silke S. Valcu, Mihai Spoelstra, Kamiel Helm, Barbara Wikelski, Martin Kempenaers, Bart Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
topic_facet |
Phalaropus fulicarius continuous daylight Calidris melanotos Calcarius lapponicus Calidris pusilla |
description |
Circadian clocks are centrally involved in the regulation of daily behavioural and physiological processes. These clocks are synchronized to the 24 h day by external cues (Zeitgeber), the most important of which is the light–dark cycle. In polar environments, however, the strength of the Zeitgeber is greatly reduced around the summer and winter solstices (continuous daylight or continuous darkness). How animals time their behaviour under such conditions has rarely been studied in the wild. Using a radio-telemetry-based system, we investigated daily activity rhythms under continuous daylight in Barrow, Alaska, throughout the breeding season in four bird species that differ in mating system and parental behaviour. We found substantial diversity in daily activity rhythms depending on species, sex and breeding stage. Individuals exhibited either robust, entrained 24 h activity cycles, were continuously active (arrhythmic) or showed 'free-running' activity cycles. In semipalmated sandpipers, a shorebird with biparental incubation, we show that the free-running rhythm is synchronized between pair mates. The diversity of diel time-keeping under continuous daylight emphasizes the plasticity of the circadian system, and the importance of the social and life-history context. Our results support the idea that circadian behaviour can be adaptively modified to enable species-specific time-keeping under polar conditions. Steiger_et_al_2013 |
format |
Other/Unknown Material |
author |
Steiger, Silke S. Valcu, Mihai Spoelstra, Kamiel Helm, Barbara Wikelski, Martin Kempenaers, Bart |
author_facet |
Steiger, Silke S. Valcu, Mihai Spoelstra, Kamiel Helm, Barbara Wikelski, Martin Kempenaers, Bart |
author_sort |
Steiger, Silke S. |
title |
Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
title_short |
Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
title_full |
Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
title_fullStr |
Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
title_full_unstemmed |
Data from: When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
title_sort |
data from: when the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds |
publisher |
Zenodo |
publishDate |
2013 |
url |
https://doi.org/10.5061/dryad.4g1g0 |
genre |
Barrow Phalaropus fulicarius Alaska |
genre_facet |
Barrow Phalaropus fulicarius Alaska |
op_relation |
https://doi.org/10.1098/rspb.2013.1016 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.4g1g0 oai:zenodo.org:4932453 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.4g1g010.1098/rspb.2013.1016 |
_version_ |
1810434666797203456 |