Isolipidic diets differing in their essential fatty acid profiles affect the deposition of unsaturated neutral lipids in the intestine, liver and vascular system of Senegalese sole larvae and early juveniles

Isolipidic diets differing in their essential fatty acid profiles affect the deposition of unsaturated neutral lipids in the intestine, liver and vascular system of Senegalese sole larvae and early juveniles Boglino A. auteur aut IRD Gisbert E. auteur aut IRD Darias Maria J. auteur aut IRD Estevez A. auteur aut IRD Andree K.B. auteur aut IRD Sarasquete C. auteur aut IRD Ortiz-Delgado J.B. auteur aut IRD text journalArticle eng text/pdf born digital access How lipid content and composition in the diet is utilized by the various organs and tissues of fish is reflected in their structure, such as the intestine through which dietary lipids are digested and absorbed, the vascular system which is involved in their transport, and the liver where lipids are stored and metabolized. However, no study has been conducted to compare the effect of different diets containing different levels of highly unsaturated fatty acids (HUFA) and essential fatty acids (EFA) on lipid deposition in fish larvae and early juveniles. Thus, we evaluated the effects of six isolipidic diets (enriched Artemia sauna), differing in their fatty acid profile, on the lipid accumulation patterns in selected target tissues (intestine, liver and vascular system) in Senegalese sole (Solea senegalensis) larvae and early juveniles. Results showed that the profile of fat accumulation in these three tissues was significantly affected by the dietary treatments, the developmental stage of the fish (premetamorphosis, metamorphosis or postmetamorphosis), as well as by the interaction between these two factors that were responsible for changes in the histological organization of the tissues. Histological results revealed that a slight variation in the EFA levels (e.g. EPA, DHA or ARA) or in their ratios (EPA/DHA, ARA/EPA, ARA/DHA, (n-3)/(n-6) HUFA, OA/PUFA) modified the metabolism of lipids and disrupted the pattern of lipid accumulation in the target tissues, leading to intestinal and hepatic steatosis. specialized AQUACULTURE POISSON MARIN LARVE JUVENILE ALIMENT ACIDE GRAS METABOLISME APPAREIL DIGESTIF TISSU ACCUMULATION CROISSANCE SOLE 040AQUAC Comparative Biochemistry and Physiology.Part A : Molecular and Integrative Physiology 162 1 59-70 2012 1095-6433 https://www.documentation.ird.fr/hor/fdi:010060307 10.1016/j.cbpa.2012.02.013 1095-6433 [F B010060307] https://www.documentation.ird.fr/hor/fdi:010060307 https://www.documentation.ird.fr/intranet/publi/depot/2014-01-30/010060307.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-01-30 2025-06-11 fdi:010060307 fre