Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery
The Antarctic krill (Euphausia superba Dana, 1850) is an important trophic link between phytoplankton and higher trophic levels. Knowledge of the lipid biochemistry of krill assists in understanding their seasonal biology and predicting their responses to ecological changes. We collected daily sampl...
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ftunivtasmania:oai:eprints.utas.edu.au:45138 2023-05-15T13:41:50+02:00 Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery Hellessey, N Ericson, JA Nichols, PD Kawaguchi, S Nicol, S Hoem, N Virtue, P 2018 https://eprints.utas.edu.au/45138/ unknown Crustacean Soc Hellessey, N, Ericson, JA, Nichols, PD, Kawaguchi, S, Nicol, S, Hoem, N and Virtue, P orcid:0000-0002-9870-1256 2018 , 'Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery' , Journal of Crustacean Biology, vol. 38, no. 6 , pp. 673-681 , doi:10.1093/jcbiol/ruy053 <http://dx.doi.org/10.1093/jcbiol/ruy053>. Antarctic krill Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) phospholipids South Atlantic triacylglycerols Article PeerReviewed 2018 ftunivtasmania https://doi.org/10.1093/jcbiol/ruy053 2022-03-07T23:17:04Z The Antarctic krill (Euphausia superba Dana, 1850) is an important trophic link between phytoplankton and higher trophic levels. Knowledge of the lipid biochemistry of krill assists in understanding their seasonal biology and predicting their responses to ecological changes. We collected daily samples of krill from a commercial fishing vessel operating in the Atlantic Sector of the Southern Ocean from 2014 to 2016. We analysed the total lipid content of krill sampled every two weeks and the relative distribution of lipid class levels to examine seasonal trends. Krill total lipid content varied significantly within and between seasons and sexes. An annual sinusoidal trend was seen in total lipid content with the highest values in autumn and the lowest in spring (average 380 and 87 mg/g dry mass, respectively). Total lipids in krill increased during summer, peaking in autumn, with the total lipids in winter individuals decreasing towards spring. The relative distribution of lipid class levels varied between season and year. Levels of triacylglycerol showed the same seasonal trend as total lipid content, whilst phospholipid showed the inverse trend indicating the contrasting roles of these two dominant lipid classes. These data provide high-resolution information on the seasonality of krill lipid content and composition. This information has both ecological and commercial utility. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea Southern Ocean University of Tasmania: UTas ePrints Antarctic Southern Ocean The Antarctic Scotia Sea Journal of Crustacean Biology |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
Antarctic krill Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) phospholipids South Atlantic triacylglycerols |
spellingShingle |
Antarctic krill Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) phospholipids South Atlantic triacylglycerols Hellessey, N Ericson, JA Nichols, PD Kawaguchi, S Nicol, S Hoem, N Virtue, P Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
topic_facet |
Antarctic krill Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) phospholipids South Atlantic triacylglycerols |
description |
The Antarctic krill (Euphausia superba Dana, 1850) is an important trophic link between phytoplankton and higher trophic levels. Knowledge of the lipid biochemistry of krill assists in understanding their seasonal biology and predicting their responses to ecological changes. We collected daily samples of krill from a commercial fishing vessel operating in the Atlantic Sector of the Southern Ocean from 2014 to 2016. We analysed the total lipid content of krill sampled every two weeks and the relative distribution of lipid class levels to examine seasonal trends. Krill total lipid content varied significantly within and between seasons and sexes. An annual sinusoidal trend was seen in total lipid content with the highest values in autumn and the lowest in spring (average 380 and 87 mg/g dry mass, respectively). Total lipids in krill increased during summer, peaking in autumn, with the total lipids in winter individuals decreasing towards spring. The relative distribution of lipid class levels varied between season and year. Levels of triacylglycerol showed the same seasonal trend as total lipid content, whilst phospholipid showed the inverse trend indicating the contrasting roles of these two dominant lipid classes. These data provide high-resolution information on the seasonality of krill lipid content and composition. This information has both ecological and commercial utility. |
format |
Article in Journal/Newspaper |
author |
Hellessey, N Ericson, JA Nichols, PD Kawaguchi, S Nicol, S Hoem, N Virtue, P |
author_facet |
Hellessey, N Ericson, JA Nichols, PD Kawaguchi, S Nicol, S Hoem, N Virtue, P |
author_sort |
Hellessey, N |
title |
Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
title_short |
Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
title_full |
Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
title_fullStr |
Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
title_full_unstemmed |
Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery |
title_sort |
seasonal and interannual variation in the lipid content and composition of euphausia superba dana, 1850 (euphausiacea) samples derived from the scotia sea fishery |
publisher |
Crustacean Soc |
publishDate |
2018 |
url |
https://eprints.utas.edu.au/45138/ |
geographic |
Antarctic Southern Ocean The Antarctic Scotia Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Scotia Sea |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Scotia Sea Southern Ocean |
op_relation |
Hellessey, N, Ericson, JA, Nichols, PD, Kawaguchi, S, Nicol, S, Hoem, N and Virtue, P orcid:0000-0002-9870-1256 2018 , 'Seasonal and interannual variation in the lipid content and composition of Euphausia superba Dana, 1850 (Euphausiacea) samples derived from the Scotia Sea fishery' , Journal of Crustacean Biology, vol. 38, no. 6 , pp. 673-681 , doi:10.1093/jcbiol/ruy053 <http://dx.doi.org/10.1093/jcbiol/ruy053>. |
op_doi |
https://doi.org/10.1093/jcbiol/ruy053 |
container_title |
Journal of Crustacean Biology |
_version_ |
1766158985749069824 |