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Arachidonic acid enriched live prey induces albinism in Senegal sole (Solea senegalensis) larvae


Villalta, M and Estevez, A and Bransden, MP, Arachidonic acid enriched live prey induces albinism in Senegal sole (Solea senegalensis) larvae, Aquaculture, 245, (1-4) pp. 193-209. ISSN 0044-8486 (2005) [Refereed Article]

DOI: doi:10.1016/j.aquaculture.2004.11.035


We examined the effect of dietary arachidonic acid (20:4n-6, ARA) on growth, survival, pigmentation and fatty acid composition of Senegal sole larvae using a dose-response design. From 3 to 37 days post-hatch (dph), larvae were fed live food (rotifers from 3 to 9 dph, Artemia nauplii from -37 dph) that had been enriched using one of three experimental emulsions containing 3 graduated concentrations (1.3, 68 and 120.1 mg ARA g-1 dry weight) of ARA and constant docosahexaenoic acid (22:6n-3, DHA). A commercial enrichment product (DHA-Protein Selco, ARA content 7.8 mg g-1 dry weight) was used as a reference diet. Final concentration of ARA in Artemia nauplii ranged from 0.2 to 17.5 mg g-1 lipids. Growth and survival were independent of dietary levels of ARA tested. However, there was a correlation between dietary ARA and a significant reduction in pigmentation leading to increased albinism. Tissue fatty acid concentrations reflected the corresponding dietary composition. Eicosapentaenoic acid (20:5n-3, EPA) levels in all the tissues examined were inversely related to dietary ARA. There was almost a 100-fold increase in the proportion of docosapentaenoic acid (22:5n-3, DPA) in the tissues relative to the diet, which might indicate chain elongation from EPA as a result of inadequate dietary DHA. A negative, linear correlation was found between the pigmentation rate and the ARA content in the head, as well as with dietary ARA/EPA ratio. © 2004 Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food 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
UTAS Author:Bransden, MP (Dr Matthew Bransden)
ID Code:37708
Year Published:2005
Web of Science® Times Cited:104
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2005-08-01
Last Modified:2006-04-10

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