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Environmental constraints on the lipid composition and metabolism of euphausiids:the case of Euphausia superba and Meganyctiphanes norvegica
Citation
Mayzaud, P and Albessard, E and Virtue, P and Boutoute, M, Environmental constraints on the lipid composition and metabolism of euphausiids:the case of Euphausia superba and Meganyctiphanes norvegica, Canadian Journal of Fisheries and Aquatic Sciences, 57, (3) pp. 91-103. ISSN 0706-652X (2000) [Refereed Article]
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Copyright Statement
Copyright 2000 NRC Canada
DOI: doi:10.1139/f00-181
Abstract
Antarctic (Euphausia superba) and northern krill (Meganyctiphanes norvegica) are characterised by largescale
spatial distributions. Euphausia superba is limited to the Southern Ocean, while M. norvegica is present from the
Arctic Ocean to the Mediterranean Sea. Euphausia superba structural lipids showed little mesoscale variability. Specific
differences between phosphatidylcholine and phosphatidylethanolamine fatty acid composition exceeded variability related
to sampling stations. On a larger scale (Southern Ocean), fatty acid composition of both total polar lipids and
phosphatidylcholine confirmed the reduced level of regional variability. Similar comparisons between female
M. norvegica collected at two extreme sites in terms of temperature regime (Kattegat and Ligurian Sea) during two
seasons (spring–summer and fall–winter) suggested a more complex picture. Levels of phosphatidylethanolamine,
lysophosphatidylcholine, and diphosphatidylglycerol showed significant differences between sites. During spring–
summer, a lower content of phosphatidylethanolamine and lysophosphatidylcholine was observed for the Ligurian Sea
population. Fatty acid composition of total polar lipids was significantly different at both sites. Comparisons between
spring–summer populations at both sites showed higher percentages of 22:6n–3 and a lower content in saturated and
monoenoic acids for the Ligurian Sea, suggesting some degree of adaptation to temperature regime. 103
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | lipids, krill |
| Research Division: | Biological Sciences |
| Research Group: | Ecology |
| Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
| Objective Division: | Environmental Management |
| Objective Group: | Management of Antarctic and Southern Ocean environments |
| Objective Field: | Biodiversity in Antarctic and Southern Ocean environments |
| UTAS Author: | Virtue, P (Associate Professor Patti Virtue) |
| ID Code: | 90446 |
| Year Published: | 2000 |
| Deposited By: | IMAS Research and Education Centre |
| Deposited On: | 2014-04-04 |
| Last Modified: | 2014-07-02 |
| Downloads: | 0 |
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