Abstract
Fatty acid biosynthesis in the larval stages of Penaeus japonicus Bate was examined by feeding microencapsulated diets containing (1-14C) palmitic acid, and fat-free diets supplemented with defined fatty acids. Highest larval growth rates were achieved on diets containing Tapes philippinarum lipid and, when defined fatty acids were substituted, on diets containing 20:6ω3 fatty acid. The radioactive tracer experiments indicate that 16:1ω7, 18:0 and 18:1ω9 fatty acids may be synthesised from palmitic acid and that P. japonicus larvae may possess the ability to elongate 18:3ω3 to 20:5ω3 and 22:6ω3, and 18:2ω6 to 20:4ω6. However, the rates of these reactions appear to be too slow to meet the larval requirements for essential fatty acids and the ω3 series of polyunsaturated fatty acids must be provided in the diet.
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Communicated by J. Mauchline, Oban
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Jones, D.A., Kanazawa, A. & Ono, K. Studies on the nutritional requirements of the larval stages of Penaeus japonicus using microencapsulated diets. Mar. Biol. 54, 261–267 (1979). https://doi.org/10.1007/BF00395788
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DOI: https://doi.org/10.1007/BF00395788