Nelson MM ; Crear BJ ; Nichols PD ; Ritz DA ;

Aquaculture Nutrition vol. 10 (4)   pp. 237-246, 1 Aou 2004

Abstract Newly hatched phyllosoma larvae of Jasus edwardsii were on-grown to stage V. Using triacylglycerol-rich marine oil nutrient sources and microalgae, Artemia were enriched with the major polyunsaturated fatty acids (PUFA) to ratios similar to that of wild-caught phyllosomata. Artemia enriched by different methods were fed to cultured phyllosomata. At each stage animals were counted, measured and sampled for lipid analyses. Survival was highest from stages II to III (62-86%), with mean total survival at 3-12%. From stages I to V larvae increased in mass (0.2-2.2 mg) and total length (2.1-5.8 mm), and decreased in total lipid. The major lipid class in all phyllosomata was polar lipid, followed by sterol, with no triacylglycerol detected. The main fatty acids were 18:1(n-9)c, 18:2(n-6), 16:0, 18:0, eicosapentaenoic acid [EPA; 20:5(n-3)], 18:1(n-7)c, arachidonic acid [AA; 20:4(n-6)] and docosahexaenoic acid [DHA; 22:6(n-3)]. On-grown phyllosomata had levels of AA and EPA similar to that of wild phyllosomata, but contained markedly lower levels of DHA. Strategies for enhancement of DHA levels will be needed for culture of rock lobster phyllosomata

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