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Lipids and nutrition of the southern rock lobster, Jasus edwardsii, from hatch to puerulus

Citation

Phleger, CF and Nelson, MM and Mooney, BD and Nichols, PD and Ritar, AJ and Smith, GG and Hart, PR and Jeffs, AG, Lipids and nutrition of the southern rock lobster, Jasus edwardsii, from hatch to puerulus, Marine and Freshwater Research, 52, (8) pp. 1475-1486. ISSN 1323-1650 (2001) [Refereed Article]

DOI: doi:10.1071/MF01071

Abstract

We examined the lipid class and fatty-acid composition of the southern rock lobster, Jasus edwardsii, phyllosoma larvae and puerulus stage to improve understanding of their nutrition in relation to aquaculture. Lipid is critical in the nutrition of larval crustaceans, including lobsters. Specimens were from Tasmanian waters, Australia, and North Island, New Zealand, waters. Analyses were by TLC-FID and capillary GC and GC-MS. Phyllosoma larvae and nektonic pueruli were low in storage lipid (triacylglycerol), and phospholipid was the major lipid class. Sterol, mainly cholesterol, was the next most abundant class. The ratio of the essential omega-3 fatty acid eicosapentaenoic acid (EPA) to the omegas-6 fatty acid arachidonic acid (AA) was lower in newly hatched phyllosomas (1.2-1.3) than in other phyllosomas (stages III-XI; 2.8-6.7) and pueruli (3.8). Ratios of the omega-3 fatty acid DHA (docosahexaenoic acid) to EPA were also lower in newly hatched phyllosomas (0.5) than in laterstage phyllosomas (1.5-2.1) and pueruli (1.2). We have followed up these compositional data by successfully enriching the live diet (Artemia) of early phyllosomas with AA, EPA and DHA. This dietary manipulation has achieved ratios of these key polyunsaturated fatty acids similar to those of wild phyllosomas. These findings will be of significance to the future of rock-lobster aquaculture.

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:Ritar, AJ (Associate Professor Arthur Ritar)
Author:Smith, GG (Associate Professor Gregory Smith)
Author:Hart, PR (Dr Piers Hart)
ID Code:21959
Year Published:2001
Web of Science® Times Cited:54
Deposited By:Zoology
Deposited On:2001-08-01
Last Modified:2011-08-03
Downloads:0

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