Abalone lipids

Small amounts (1 to 3% PA) of docosapentaenoic acid 22 5(n-3) (DPA) may also be present in fish flesh. Exceptionally high amounts of DPA (13 to 14%) were recorded in the abalone in which DPA DHA (Dunstan et al., 1996). Mammalian depot fats contain almost equivalent amounts of EPA, DHA, and DPA (Krzynowek et al., 1990 Ackman, 1994). The 18 3(n-3), 18 4(n-3), and 20 4(n-3) acids occur in small (a few percent at most) amounts in fish lipids as well. These acids may be more abundant in freshwater fish. The latter acid was recorded in somewhat higher amounts (about 1%) in rainbow trout, oysters, and blue mussels (Nichols et al., 1998). The flatfish lipids were found to contain the very long-chain 24 6(n-3) PA, contributing as much as 6 to 9% of total PA in the flesh, 3% in the hver, and 6% in the viscera (Ota et al., 1994). 

Dunstan, G.A., Volkman, J.K., and Maguire, G.B., 2000, Optimisation of Essential Lipids in Artificial Feeds for Australian Abalone, FRDC Project 94/85, CSIRO Marine Research, Fisheries Research and Development Corporation, 68. 

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