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Biochemical composition of Nyctiphanes australis and its possible use as an aquaculture feed source: lipids, pigments and fluoride content
Citation
Virtue, P and Nicols, PD and Johannes, RE and Young, JW, Biochemical composition of Nyctiphanes australis and its possible use as an aquaculture feed source: lipids, pigments and fluoride content, Marine Biology: International Journal on Life in Oceans and Coastal Waters, 122, (1) pp. 121-128. ISSN 0025-3162 (1994) [Refereed Article]
Copyright Statement
Copyright 1995 Springer-Verlag
Abstract
Nyctiphanes australis contained, on a dry weight basis, an average of 52% crude protein and 5.0 to 9.5% lipid. The fatty acid profile of N. australis was markedly unsaturated, with a mean total ω3 fatty acid content of 48.6±2.4% of total fatty acids. N. australis contained high levels of the essential long-chain polyunsaturated fatty acids eicosapentaenoic (EPA, 20:5ω3) and docosahexaencic (DHA, 22:6ω3), ranging from 16.6 to 36.5% and 11.1 to 24.8%, respectively. The concentration of total carotenoids ranged from 137 to 302 μg g−1 dry wt, with no significant differences in concentrations found with season or life stage. The carotenoids were comprised of 79.5% astaxanthin and 20.5% canthaxanthin. The lipid and pigment compositions of N. australis suggest that the species could serve as a suitable feed source for cultured salmonids. Like other euphausiids, N. australis contained high levels of fluoride, with a seasonal range between 277 and 3507 μg g−1 dry wt. The high fluoride levels found in N. australis would not detract from its potential as a feed source for salmonids because ingested fluoride is largely absorbed by the skeleton.
Item Details
Item Type: | Refereed Article |
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Keywords: | Krill, lipids, pigments, fluoride |
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: | 90428 |
Year Published: | 1994 |
Web of Science® Times Cited: | 29 |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2014-04-03 |
Last Modified: | 2014-06-12 |
Downloads: | 0 |
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