Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/1026
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Effects of dietary eicosapentaenoic acid on growth, survival, pigmentation and fatty acid composition in Senegal sole (Solea senegalensis) larvae during the Artemia feeding period
Authors: Villalta, Mireia
Estevez, Alicia
Bransden, Matthew P
Bell, J Gordon
Keywords: Eicosapentaenoic acid
Fatty acid
Larvae
Solea senegalensis
Enrichment
Live food
Issue Date: Jun-2008
Publisher: Wiley-Blackwell
Citation: Villalta M, Estevez A, Bransden MP & Bell JG (2008) Effects of dietary eicosapentaenoic acid on growth, survival, pigmentation and fatty acid composition in Senegal sole (Solea senegalensis) larvae during the Artemia feeding period, Aquaculture Nutrition, 14 (3), pp. 232-241.
Abstract: We examined the effect of dietary eicosapentaenoic acid (20:5n-3, EPA) on growth, survival, pigmentation and fatty acid composition of Senegal sole larvae using a dose-response design. From 3 to 40 days post hatch (dph), larvae were fed live food that had been enriched using one of four experimental emulsions containing graduated concentrations of EPA and constant docosahexaenoic acid (22:6n-3, DHA) and arachidonic acid (20:4n-6, ARA). Proportions of EPA in the enriched Artemia nauplii were described as “nil” (EPA-N, 0.5% total fatty acids, TFA), “low” (EPA-L, 10.7% TFA), “medium” (EPA-M, 20.3% TFA) or “high” (EPA-H, 29.5% TFA). Significant differences among dietary treatments in larval length were observed at 25, 30 and 40 dph, and in dry weight at 30 and 40 dph, although no significant correlation could be found between dietary EPA content and growth. The stage of eye migration at 17 and 25 dph was significantly affected by dietary levels of EPA. Significantly lower survival was observed in fish fed EPA-H enriched nauplii. A significantly lower percentage of fish fed EPA-N (82.7%) and EPA-L (82.9%) diets were normally pigmented compared to the fish fed EPA-M (98.1%) and EPA-H (99.4%) enriched nauplii. Tissue fatty acid concentrations reflected the corresponding dietary composition. Arachidonic and docosahexaenoic acid levels in all the tissues examined were inversely related to dietary EPA. There was an increase in the proportion of docosapentaenoic acid (22:5n-3, DPA) in the tissues relative to the diet, which is indicative of chain elongation of EPA. This work concluded that Senegal sole larvae have a very low EPA requirement during the live feeding period.
Type: Journal Article
URI: http://hdl.handle.net/1893/1026
DOI Link: http://dx.doi.org/10.1111/j.1365-2095.2007.00522.x
Rights: Published in Aquaculture Nutrition. Copyright: Wiley-Blackwell. The definitive version is available at www.blackwell-synergy.com.
Affiliation: IRTA
IRTA
University of Tasmania
Aquaculture

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