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The Effect of Diet on the Biochemical Composition of Juvenile Artemia: Potential Formulations for Rock Lobster Aquaculture

Citation

Nelson, MM and Mooney, BD and Nichols, PD and Phleger, CF and Smith, GG and Hart, P and Ritar, AJ, The Effect of Diet on the Biochemical Composition of Juvenile Artemia: Potential Formulations for Rock Lobster Aquaculture, Journal of the World Aquaculture Society, 33, (2) pp. 146-157. ISSN 0893-8849 (2002) [Refereed Article]

DOI: doi:10.1111/j.1749-7345.2002.tb00489.x

Abstract

The lipid class and fatty acid (FA) composition of juvenile Artemia fed continously on four diets-the microalga Tetraselmis suecica, a mix of oat bran-wheat germ-lecithin (OWL), OWL-eicosapentaenoic acid (EPA), and OWL-EPA-arachidonic acid (AA)-were examined over a 9-d experiment in an attempt to approximate the FA profile of phyllosoma larvae of wild southern rock lobster Jasus edwardsii. The main difference in lipid class composition of Artemia fed the four diets was the relative level of polar lipid (PL) and triacylglycerol (TAG). By day 9, the algal-fed Artemia were highest in PL (95% of total lipid) and lowest in TAG (2%), whereas the remaining diets resulted in Artemia with 16-30% PL and 41-82% TAG. After 2 d, the relative FA composition of all Artemia treatments closely reflected those of the diets, with no marked change after further feeding (to day 9). In terms of the content of essential polyunsaturated fatty acids (PUFA), by day 5 Artemia fed: 1) with the algal diet contained 7 mg/g FA dry mass (0.3% DHA, 6.3% EPA, 3.4% AA of total FA); 2) with the OWL diet contained 3 mg/g (0.3% DHA, 0.9% EPA, 0.7% AA); 3) with the OWL-EPA diet contained 55 mg/g (6.2% DHA, 11.6% EPA, 1.1% AA); and 4) with the OWL-EPA-AA contained 83 mg/g (3.8% DHA, 7.5% EPA, 17.4% AA). The PUFA profiles of Artemia using the OWL-oil diets were similar to wild rock lobster phyllosomata, although levels of docosahexaenoic acid (DHA) were lower (10% DHA) than in J. edwardsii larvae. On the basis of PUFA composition data alone, the results suggest the suitability of the OWL-oil mixed diets for consideration for feeding to Artemia used in the culture of southern rock lobster larvae, particularly if the level of DHA can be further enhanced.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Nelson, MM (Mr Matthew Nelson)
Author:Smith, GG (Associate Professor Gregory Smith)
Author:Ritar, AJ (Associate Professor Arthur Ritar)
ID Code:22825
Year Published:2002
Web of Science® Times Cited:13
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2002-08-01
Last Modified:2007-08-14
Downloads:0

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