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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

DOI: doi:10.1007/BF00349285

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
Keywords:Krill, lipids, pigments, fluoride
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
Author:Virtue, P (Associate Professor Patti Virtue)
ID Code:90428
Year Published:1994
Web of Science® Times Cited:23
Deposited By:IMAS Research and Education Centre
Deposited On:2014-04-03
Last Modified:2014-06-12
Downloads:0

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