Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic"
The circadian clock provides a mechanism for anticipating environmental cycles and is synchronized by temporal cues such as daily light/dark cycle or photoperiod. However, the Arctic environment is characterized by several months of Midnight Sun when the sun is continuously above the horizon and whe...
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ftdatacite:10.6084/m9.figshare.c.5042051 2023-05-15T14:57:52+02:00 Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" Hüppe, Lukas Payton, Laura Last, Kim Wilcockson, David Ershova, Elizaveta Meyer, Bettina 2020 https://dx.doi.org/10.6084/m9.figshare.c.5042051 https://rs.figshare.com/collections/Supplementary_material_from_Evidence_for_oscillating_circadian_clock_genes_in_the_copepod_i_Calanus_finmarchicus_i_during_summer_solstice_in_the_high_Arctic_/5042051 unknown The Royal Society https://dx.doi.org/10.1098/rsbl.2020.0257 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 CC-BY Molecular Biology Environmental Science Ecology FOS Biological sciences Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5042051 https://doi.org/10.1098/rsbl.2020.0257 2021-11-05T12:55:41Z The circadian clock provides a mechanism for anticipating environmental cycles and is synchronized by temporal cues such as daily light/dark cycle or photoperiod. However, the Arctic environment is characterized by several months of Midnight Sun when the sun is continuously above the horizon and where sea ice further attenuates photoperiod. To test if the oscillations of circadian clock genes remain in synchrony with subtle environmental changes, we sampled the copepod Calanus finmarchicus, a key zooplankter in the north Atlantic, to determine in situ daily circadian clock gene expression near the summer solstice at a southern (74.5°N) sea ice-free and a northern (82.5°N) sea ice-covered station . Results revealed significant oscillation of genes at both stations, indicating the persistence of the clock at this time. While copepods from the southern station showed oscillations in the daily range, those from the northern station exhibited an increase in ultradian oscillations. We suggest that in C. finmarchicus , even small daily changes of solar altitude seem to be sufficient to entrain the circadian clock and propose that at very high latitudes, in under-ice ecosystems, tidal cues may be used as an additional entrainment cue. Article in Journal/Newspaper Arctic Calanus finmarchicus North Atlantic Sea ice Copepods midnight sun DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Molecular Biology Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Molecular Biology Environmental Science Ecology FOS Biological sciences Hüppe, Lukas Payton, Laura Last, Kim Wilcockson, David Ershova, Elizaveta Meyer, Bettina Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
topic_facet |
Molecular Biology Environmental Science Ecology FOS Biological sciences |
description |
The circadian clock provides a mechanism for anticipating environmental cycles and is synchronized by temporal cues such as daily light/dark cycle or photoperiod. However, the Arctic environment is characterized by several months of Midnight Sun when the sun is continuously above the horizon and where sea ice further attenuates photoperiod. To test if the oscillations of circadian clock genes remain in synchrony with subtle environmental changes, we sampled the copepod Calanus finmarchicus, a key zooplankter in the north Atlantic, to determine in situ daily circadian clock gene expression near the summer solstice at a southern (74.5°N) sea ice-free and a northern (82.5°N) sea ice-covered station . Results revealed significant oscillation of genes at both stations, indicating the persistence of the clock at this time. While copepods from the southern station showed oscillations in the daily range, those from the northern station exhibited an increase in ultradian oscillations. We suggest that in C. finmarchicus , even small daily changes of solar altitude seem to be sufficient to entrain the circadian clock and propose that at very high latitudes, in under-ice ecosystems, tidal cues may be used as an additional entrainment cue. |
format |
Article in Journal/Newspaper |
author |
Hüppe, Lukas Payton, Laura Last, Kim Wilcockson, David Ershova, Elizaveta Meyer, Bettina |
author_facet |
Hüppe, Lukas Payton, Laura Last, Kim Wilcockson, David Ershova, Elizaveta Meyer, Bettina |
author_sort |
Hüppe, Lukas |
title |
Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
title_short |
Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
title_full |
Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
title_fullStr |
Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
title_full_unstemmed |
Supplementary material from "Evidence for oscillating circadian clock genes in the copepod Calanus finmarchicus during summer solstice in the high Arctic" |
title_sort |
supplementary material from "evidence for oscillating circadian clock genes in the copepod calanus finmarchicus during summer solstice in the high arctic" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5042051 https://rs.figshare.com/collections/Supplementary_material_from_Evidence_for_oscillating_circadian_clock_genes_in_the_copepod_i_Calanus_finmarchicus_i_during_summer_solstice_in_the_high_Arctic_/5042051 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Calanus finmarchicus North Atlantic Sea ice Copepods midnight sun |
genre_facet |
Arctic Calanus finmarchicus North Atlantic Sea ice Copepods midnight sun |
op_relation |
https://dx.doi.org/10.1098/rsbl.2020.0257 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5042051 https://doi.org/10.1098/rsbl.2020.0257 |
_version_ |
1766329972687896576 |