Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles
Diel vertical migration (DVM) behaviour in swarms of Antarctic krill (Euphausia superbaDana, 1850) is notoriously variable, with swarms being found at a range of depths and in different shapes, sizes, and packing concentrations throughout the day-night cycle. Because social aggregation can potential...
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Online Access: | http://plymsea.ac.uk/id/eprint/8108/ http://plymsea.ac.uk/id/eprint/8108/1/Tarling%20et%20al.pdf https://doi.org/10.1093/jcbiol/ruy040 |
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ftplymouthml:oai:plymsea.ac.uk:8108 2023-05-15T13:57:48+02:00 Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles Tarling, GA Thorpe, SE Fielding, S Klevjer, T Ryabov, A Somerfield, PJ 2018-11-22 text http://plymsea.ac.uk/id/eprint/8108/ http://plymsea.ac.uk/id/eprint/8108/1/Tarling%20et%20al.pdf https://doi.org/10.1093/jcbiol/ruy040 en eng Oxford Academic http://plymsea.ac.uk/id/eprint/8108/1/Tarling%20et%20al.pdf Tarling, GA; Thorpe, SE; Fielding, S; Klevjer, T; Ryabov, A; Somerfield, PJ. 2018 Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles. Journal of Crustacean Biology, 38 (6). 716-727. https://doi.org/10.1093/jcbiol/ruy040 <https://doi.org/10.1093/jcbiol/ruy040> cc_by_nc_4 CC-BY-NC Publication - Article PeerReviewed 2018 ftplymouthml https://doi.org/10.1093/jcbiol/ruy040 2022-09-13T05:49:19Z Diel vertical migration (DVM) behaviour in swarms of Antarctic krill (Euphausia superbaDana, 1850) is notoriously variable, with swarms being found at a range of depths and in different shapes, sizes, and packing concentrations throughout the day-night cycle. Because social aggregation can potentially serve the same purpose as DVM in minimising predation risk, krill may use both strategies to varying extents. Diel variation was examined in swarm depth, length, perimeter, area, thickness, and packing concentration across 4,130 open-ocean swarms in the Scotia Sea during summer. Inter-relationships between each of the swarm descriptors were complex but multivariate analyses identified pairings in levels of similarity between area and perimeter, thickness and packing concentration, and depth and length. Second-stage analysis further identified diel cyclicity in these relationships. Swarm parameters were more variable than depth over the diel cycle, identifying swarming to be the primary diel response to which DVM is a secondary contributor. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Antarctic Scotia Sea Journal of Crustacean Biology |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
description |
Diel vertical migration (DVM) behaviour in swarms of Antarctic krill (Euphausia superbaDana, 1850) is notoriously variable, with swarms being found at a range of depths and in different shapes, sizes, and packing concentrations throughout the day-night cycle. Because social aggregation can potentially serve the same purpose as DVM in minimising predation risk, krill may use both strategies to varying extents. Diel variation was examined in swarm depth, length, perimeter, area, thickness, and packing concentration across 4,130 open-ocean swarms in the Scotia Sea during summer. Inter-relationships between each of the swarm descriptors were complex but multivariate analyses identified pairings in levels of similarity between area and perimeter, thickness and packing concentration, and depth and length. Second-stage analysis further identified diel cyclicity in these relationships. Swarm parameters were more variable than depth over the diel cycle, identifying swarming to be the primary diel response to which DVM is a secondary contributor. |
format |
Article in Journal/Newspaper |
author |
Tarling, GA Thorpe, SE Fielding, S Klevjer, T Ryabov, A Somerfield, PJ |
spellingShingle |
Tarling, GA Thorpe, SE Fielding, S Klevjer, T Ryabov, A Somerfield, PJ Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
author_facet |
Tarling, GA Thorpe, SE Fielding, S Klevjer, T Ryabov, A Somerfield, PJ |
author_sort |
Tarling, GA |
title |
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
title_short |
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
title_full |
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
title_fullStr |
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
title_full_unstemmed |
Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles |
title_sort |
varying depth and swarm dimensions of open-ocean antarctic krill euphausia superba dana, 1850 (euphausiacea) over diel cycles |
publisher |
Oxford Academic |
publishDate |
2018 |
url |
http://plymsea.ac.uk/id/eprint/8108/ http://plymsea.ac.uk/id/eprint/8108/1/Tarling%20et%20al.pdf https://doi.org/10.1093/jcbiol/ruy040 |
geographic |
Antarctic Scotia Sea |
geographic_facet |
Antarctic Scotia Sea |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea |
op_relation |
http://plymsea.ac.uk/id/eprint/8108/1/Tarling%20et%20al.pdf Tarling, GA; Thorpe, SE; Fielding, S; Klevjer, T; Ryabov, A; Somerfield, PJ. 2018 Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles. Journal of Crustacean Biology, 38 (6). 716-727. https://doi.org/10.1093/jcbiol/ruy040 <https://doi.org/10.1093/jcbiol/ruy040> |
op_rights |
cc_by_nc_4 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1093/jcbiol/ruy040 |
container_title |
Journal of Crustacean Biology |
_version_ |
1766265697547059200 |