Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/43534
Título: Importance of dietary arachidonic acid for the growth, survival and stress resistance of larval European sea bass (Dicentrarchus labrax) fed high dietary docosahexaenoic and eicosapentaenoic acids
Autores/as: Atalah, Eyad
Hernández Cruz, Carmen María 
Ganuza, Eneko
Benítez-Santana, Tibiábin
Ganga, Rachid
Roo Filgueira, Francisco Javier 
Montero Vítores, Daniel 
Izquierdo López, María Soledad 
Clasificación UNESCO: 251092 Acuicultura marina
Palabras clave: Dicentrarchus labrax
Larval nutrition
Arachidonic acid
Stress resistance
EPA, et al.
Fecha de publicación: 2011
Proyectos: Efectos de los ácidos grasos esenciales en el desarrollo de las respuestas endocrina e inmune temprana en larvas de lubina Dicentrarchus labrax
Publicación seriada: Aquaculture Research 
Resumen: Together with docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), arachidonic acid (ARA) is being considered to be an essential fatty acid in marine fish larval diets. The objective of the present study was to determine the importance of dietary ARA levels for larval European sea bass performance, when EPA and DHA are also present in the diet. Eighteen‐day‐old larvae were fed, for 14 days, gelatine‐based microdiets containing the following ARA levels: 0.3%, 0.6% or 1.2%. Elevation of dietary ARA up to 1.2% showed a positive correlation with larval survival and a significant improvement in the specific growth rates, body weight and total length. Arachidonic acid was efficiently incorporated into larval lipids, even at a higher proportion than that in the diets. Increased accumulation of ARA did not affect the incorporation of DHA or EPA from the diet into larval total lipids. A significant positive correlation was found between dietary ARA levels and survival after handling stress, indicating the importance of this fatty acid in sea bass larvae response to acute stressors. The results show the importance of ARA for sea bass larvae, but higher dietary levels should be tested to determine whether there is a negative effect of ARA in sea bass as reported for other species.
URI: http://hdl.handle.net/10553/43534
ISSN: 1355-557X
DOI: 10.1111/j.1365-2109.2010.02714.x
Fuente: Aquaculture Research [ISSN 1355-557X], v. 42 (9), p. 1261-1268
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