Lipids of North Atlantic krill.

The seasonal variations in the total lipid content, lipid class composition, fatty acid composition, and fatty alcohol composition of Meganyctiphanes norvegica (M. Sars), Thysanoessa inermis (Krøyer), and T. raschii (M. Sars) have been examined. The total lipid content was highest in the autumn and...

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Published in:Journal of Lipid Research
Main Authors: O Saether, T E Ellingsen, V Mohr
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 1987
Subjects:
Online Access:https://doi.org/10.1016/S0022-2275(20)38835-0
https://doaj.org/article/bb6b646d2ffc454dadd9c334e5f39e39
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spelling ftdoajarticles:oai:doaj.org/article:bb6b646d2ffc454dadd9c334e5f39e39 2023-05-15T17:10:43+02:00 Lipids of North Atlantic krill. O Saether T E Ellingsen V Mohr 1987-01-01T00:00:00Z https://doi.org/10.1016/S0022-2275(20)38835-0 https://doaj.org/article/bb6b646d2ffc454dadd9c334e5f39e39 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S0022227520388350 https://doaj.org/toc/0022-2275 0022-2275 doi:10.1016/S0022-2275(20)38835-0 https://doaj.org/article/bb6b646d2ffc454dadd9c334e5f39e39 Journal of Lipid Research, Vol 27, Iss 3, Pp 274-285 (1987) Biochemistry QD415-436 article 1987 ftdoajarticles https://doi.org/10.1016/S0022-2275(20)38835-0 2022-12-31T06:34:39Z The seasonal variations in the total lipid content, lipid class composition, fatty acid composition, and fatty alcohol composition of Meganyctiphanes norvegica (M. Sars), Thysanoessa inermis (Krøyer), and T. raschii (M. Sars) have been examined. The total lipid content was highest in the autumn and early winter months and lowest in the spring. In M. norvegica, triacylglycerols served as the only depot lipids, whereas in T. inermis and T. raschii triacylglycerols, wax esters, and glycerophospholipids varied in proportion to the total lipid content. This suggests that glycerophospholipids, as well as wax esters and triacylglycerols, constitute depot lipids in these species. Wax esters and glycerophospholipids were the dominating depot lipids in T. inermis, whereas triacylglycerols and glycerophospholipids were most important in T. raschii. Results suggest that non-depot glycerophospholipids may constitute 3.5-4.5% of the dry weight of the three species of krill examined. T. inermis and T. raschii, from the same catches, had very similar fatty acid compositions for each of the major lipid classes, with the exception of a few minor fatty acids. The major lipid classes in all three species showed complex seasonal variations in the content of the fatty acids that typically reflect the diet, particularly in the case of the triacylglycerols. The results suggest that all the species examined are more herbivorous during the summer than during the autumn and winter. M. norvegica seemed to be significantly more carnivorous than the two Thysanoessa species. The degree of incorporation of individual fatty acids from the diet is probably specific for each lipid class in each krill species. The proportion of polyenoic fatty acids in the glycerophospholipids and the proportion of monoenoic fatty acids in the wax esters may be of importance for the temperature adaptation of T. inermis and T. raschii. Article in Journal/Newspaper Meganyctiphanes norvegica North Atlantic Thysanoessa inermis Directory of Open Access Journals: DOAJ Articles Journal of Lipid Research 27 3 274 285
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Biochemistry
QD415-436
spellingShingle Biochemistry
QD415-436
O Saether
T E Ellingsen
V Mohr
Lipids of North Atlantic krill.
topic_facet Biochemistry
QD415-436
description The seasonal variations in the total lipid content, lipid class composition, fatty acid composition, and fatty alcohol composition of Meganyctiphanes norvegica (M. Sars), Thysanoessa inermis (Krøyer), and T. raschii (M. Sars) have been examined. The total lipid content was highest in the autumn and early winter months and lowest in the spring. In M. norvegica, triacylglycerols served as the only depot lipids, whereas in T. inermis and T. raschii triacylglycerols, wax esters, and glycerophospholipids varied in proportion to the total lipid content. This suggests that glycerophospholipids, as well as wax esters and triacylglycerols, constitute depot lipids in these species. Wax esters and glycerophospholipids were the dominating depot lipids in T. inermis, whereas triacylglycerols and glycerophospholipids were most important in T. raschii. Results suggest that non-depot glycerophospholipids may constitute 3.5-4.5% of the dry weight of the three species of krill examined. T. inermis and T. raschii, from the same catches, had very similar fatty acid compositions for each of the major lipid classes, with the exception of a few minor fatty acids. The major lipid classes in all three species showed complex seasonal variations in the content of the fatty acids that typically reflect the diet, particularly in the case of the triacylglycerols. The results suggest that all the species examined are more herbivorous during the summer than during the autumn and winter. M. norvegica seemed to be significantly more carnivorous than the two Thysanoessa species. The degree of incorporation of individual fatty acids from the diet is probably specific for each lipid class in each krill species. The proportion of polyenoic fatty acids in the glycerophospholipids and the proportion of monoenoic fatty acids in the wax esters may be of importance for the temperature adaptation of T. inermis and T. raschii.
format Article in Journal/Newspaper
author O Saether
T E Ellingsen
V Mohr
author_facet O Saether
T E Ellingsen
V Mohr
author_sort O Saether
title Lipids of North Atlantic krill.
title_short Lipids of North Atlantic krill.
title_full Lipids of North Atlantic krill.
title_fullStr Lipids of North Atlantic krill.
title_full_unstemmed Lipids of North Atlantic krill.
title_sort lipids of north atlantic krill.
publisher Elsevier
publishDate 1987
url https://doi.org/10.1016/S0022-2275(20)38835-0
https://doaj.org/article/bb6b646d2ffc454dadd9c334e5f39e39
genre Meganyctiphanes norvegica
North Atlantic
Thysanoessa inermis
genre_facet Meganyctiphanes norvegica
North Atlantic
Thysanoessa inermis
op_source Journal of Lipid Research, Vol 27, Iss 3, Pp 274-285 (1987)
op_relation http://www.sciencedirect.com/science/article/pii/S0022227520388350
https://doaj.org/toc/0022-2275
0022-2275
doi:10.1016/S0022-2275(20)38835-0
https://doaj.org/article/bb6b646d2ffc454dadd9c334e5f39e39
op_doi https://doi.org/10.1016/S0022-2275(20)38835-0
container_title Journal of Lipid Research
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container_start_page 274
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