Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm?
Antarctic krill (Euphausia superba) is a keystone species in the southern ocean ecosystem where it is the main consumer of phytoplankton and constitutes the main food item of many higher predators. Both food and predators are most abundant at the surface, thus krill hide in the depth of the ocean du...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/11476/ |
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ftnerc:oai:nora.nerc.ac.uk:11476 2023-05-15T13:45:10+02:00 Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? Gaten, Edward Tarling, Geraint Dowse, Harold Kyriacou, Charalambos Rosato, Ezio 2008 http://nora.nerc.ac.uk/id/eprint/11476/ unknown Springer Gaten, Edward; Tarling, Geraint orcid:0000-0002-3753-5899 Dowse, Harold; Kyriacou, Charalambos; Rosato, Ezio. 2008 Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? Journal of Genetics, 87 (5). 473-483. https://doi.org/10.1007/s12041-008-0070-y <https://doi.org/10.1007/s12041-008-0070-y> Marine Sciences Biology and Microbiology Zoology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc 2023-02-04T19:27:21Z Antarctic krill (Euphausia superba) is a keystone species in the southern ocean ecosystem where it is the main consumer of phytoplankton and constitutes the main food item of many higher predators. Both food and predators are most abundant at the surface, thus krill hide in the depth of the ocean during the day and migrate to the upper layers at night, to feed at a time when the predatory risk is lowest. Although the functional significance of this diel vertical migration (DVM) is clear and its modulation by environmental factors has been described, the involvement of an endogenous circadian clock in this behaviour is as yet not fully resolved. We have analysed the circadian behaviour of Euphausia superba in a laboratory setting and here we present the first description of locomotor activity rhythms for this species. Our results are in agreement with the hypothesis that the circadian clock plays a key role in DVM. They also suggest that the interplay between food availability, social cues and the light:dark cycle acts as the predominant Zeitgeber for DVM in this species. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Journal of Genetics 87 5 473 483 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment Gaten, Edward Tarling, Geraint Dowse, Harold Kyriacou, Charalambos Rosato, Ezio Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
topic_facet |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
description |
Antarctic krill (Euphausia superba) is a keystone species in the southern ocean ecosystem where it is the main consumer of phytoplankton and constitutes the main food item of many higher predators. Both food and predators are most abundant at the surface, thus krill hide in the depth of the ocean during the day and migrate to the upper layers at night, to feed at a time when the predatory risk is lowest. Although the functional significance of this diel vertical migration (DVM) is clear and its modulation by environmental factors has been described, the involvement of an endogenous circadian clock in this behaviour is as yet not fully resolved. We have analysed the circadian behaviour of Euphausia superba in a laboratory setting and here we present the first description of locomotor activity rhythms for this species. Our results are in agreement with the hypothesis that the circadian clock plays a key role in DVM. They also suggest that the interplay between food availability, social cues and the light:dark cycle acts as the predominant Zeitgeber for DVM in this species. |
format |
Article in Journal/Newspaper |
author |
Gaten, Edward Tarling, Geraint Dowse, Harold Kyriacou, Charalambos Rosato, Ezio |
author_facet |
Gaten, Edward Tarling, Geraint Dowse, Harold Kyriacou, Charalambos Rosato, Ezio |
author_sort |
Gaten, Edward |
title |
Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
title_short |
Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
title_full |
Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
title_fullStr |
Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
title_full_unstemmed |
Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? |
title_sort |
is vertical migration in antarctic krill (euphausia superba) influenced by an underlying circadian rhythm? |
publisher |
Springer |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11476/ |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
op_relation |
Gaten, Edward; Tarling, Geraint orcid:0000-0002-3753-5899 Dowse, Harold; Kyriacou, Charalambos; Rosato, Ezio. 2008 Is vertical migration in Antarctic krill (Euphausia superba) influenced by an underlying circadian rhythm? Journal of Genetics, 87 (5). 473-483. https://doi.org/10.1007/s12041-008-0070-y <https://doi.org/10.1007/s12041-008-0070-y> |
container_title |
Journal of Genetics |
container_volume |
87 |
container_issue |
5 |
container_start_page |
473 |
op_container_end_page |
483 |
_version_ |
1766214590000005120 |