Loss of buoyancy control in the copepod Calanus finmarchicus
A mechanism is demonstrated that could explain large-scale aggregations of lipid-rich copepods in the surface waters of marine environments. Laboratory experiments establish that changes in salinity and temperature induce lipid-mediated buoyancy instability that entrains copepods in surface waters....
Published in: | Journal of Plankton Research |
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Language: | English |
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2019
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Online Access: | https://pure.uhi.ac.uk/en/publications/95f1fc34-944c-4b5f-a022-115a49681d89 https://doi.org/10.1093/plankt/fbz036 https://pureadmin.uhi.ac.uk/ws/files/7865633/fbz036.pdf https://academic.oup.com/plankt/article/41/5/787/5586937 |
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ftuhipublicatio:oai:pure.atira.dk:publications/95f1fc34-944c-4b5f-a022-115a49681d89 2023-05-15T15:47:57+02:00 Loss of buoyancy control in the copepod Calanus finmarchicus Cohen, Jonathan H Last, Kim S Waldie, Jack Pond, David W 2019-10-14 application/pdf https://pure.uhi.ac.uk/en/publications/95f1fc34-944c-4b5f-a022-115a49681d89 https://doi.org/10.1093/plankt/fbz036 https://pureadmin.uhi.ac.uk/ws/files/7865633/fbz036.pdf https://academic.oup.com/plankt/article/41/5/787/5586937 eng eng info:eu-repo/semantics/openAccess Cohen , J H , Last , K S , Waldie , J & Pond , D W 2019 , ' Loss of buoyancy control in the copepod Calanus finmarchicus ' , Journal of Plankton Research , vol. 41 , no. 5 , pp. 787-790 . https://doi.org/10.1093/plankt/fbz036 salinity temperature pressure lipid phase transition depth regulation article 2019 ftuhipublicatio https://doi.org/10.1093/plankt/fbz036 2023-02-16T23:21:05Z A mechanism is demonstrated that could explain large-scale aggregations of lipid-rich copepods in the surface waters of marine environments. Laboratory experiments establish that changes in salinity and temperature induce lipid-mediated buoyancy instability that entrains copepods in surface waters. Reduced hydrostatic pressure associated with forced ascent of copepods at fjordic sills, shelf breaks and seamounts would also reduce the density of the lipid reserves, forcing copepods and particularly those in diapause to the surface. We propose that salinity, temperature and hydrodynamics of the physical environment, in conjunction with the biophysical properties of lipids, explain periodic high abundances of lipid-rich copepods in surface waters. Article in Journal/Newspaper Calanus finmarchicus Copepods University of the Highlands and Islands: Research Database of UHI Journal of Plankton Research 41 5 787 790 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
salinity temperature pressure lipid phase transition depth regulation |
spellingShingle |
salinity temperature pressure lipid phase transition depth regulation Cohen, Jonathan H Last, Kim S Waldie, Jack Pond, David W Loss of buoyancy control in the copepod Calanus finmarchicus |
topic_facet |
salinity temperature pressure lipid phase transition depth regulation |
description |
A mechanism is demonstrated that could explain large-scale aggregations of lipid-rich copepods in the surface waters of marine environments. Laboratory experiments establish that changes in salinity and temperature induce lipid-mediated buoyancy instability that entrains copepods in surface waters. Reduced hydrostatic pressure associated with forced ascent of copepods at fjordic sills, shelf breaks and seamounts would also reduce the density of the lipid reserves, forcing copepods and particularly those in diapause to the surface. We propose that salinity, temperature and hydrodynamics of the physical environment, in conjunction with the biophysical properties of lipids, explain periodic high abundances of lipid-rich copepods in surface waters. |
format |
Article in Journal/Newspaper |
author |
Cohen, Jonathan H Last, Kim S Waldie, Jack Pond, David W |
author_facet |
Cohen, Jonathan H Last, Kim S Waldie, Jack Pond, David W |
author_sort |
Cohen, Jonathan H |
title |
Loss of buoyancy control in the copepod Calanus finmarchicus |
title_short |
Loss of buoyancy control in the copepod Calanus finmarchicus |
title_full |
Loss of buoyancy control in the copepod Calanus finmarchicus |
title_fullStr |
Loss of buoyancy control in the copepod Calanus finmarchicus |
title_full_unstemmed |
Loss of buoyancy control in the copepod Calanus finmarchicus |
title_sort |
loss of buoyancy control in the copepod calanus finmarchicus |
publishDate |
2019 |
url |
https://pure.uhi.ac.uk/en/publications/95f1fc34-944c-4b5f-a022-115a49681d89 https://doi.org/10.1093/plankt/fbz036 https://pureadmin.uhi.ac.uk/ws/files/7865633/fbz036.pdf https://academic.oup.com/plankt/article/41/5/787/5586937 |
genre |
Calanus finmarchicus Copepods |
genre_facet |
Calanus finmarchicus Copepods |
op_source |
Cohen , J H , Last , K S , Waldie , J & Pond , D W 2019 , ' Loss of buoyancy control in the copepod Calanus finmarchicus ' , Journal of Plankton Research , vol. 41 , no. 5 , pp. 787-790 . https://doi.org/10.1093/plankt/fbz036 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/plankt/fbz036 |
container_title |
Journal of Plankton Research |
container_volume |
41 |
container_issue |
5 |
container_start_page |
787 |
op_container_end_page |
790 |
_version_ |
1766382931295600640 |