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Biochemical composition of Nyctiphanes australis and its possible use as an aquaculture feed source: lipids, pigments and fluoride content

journal contribution
posted on 2023-05-17, 23:38 authored by Patti VirtuePatti Virtue, Nicols, PD, Johannes, RE, Young, JW
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.


Publication title

Marine Biology: International Journal on Life in Oceans and Coastal Waters








Institute for Marine and Antarctic Studies



Place of publication

175 Fifth Ave, New York, USA, Ny, 10010

Rights statement

Copyright 1995 Springer-Verlag

Repository Status

  • Restricted

Socio-economic Objectives

Biodiversity in Antarctic and Southern Ocean environments

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