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dc.contributor.authorBetancor, Monicaen_UK
dc.contributor.authorOrtega, Aurelioen_UK
dc.contributor.authorde la Gandara, Fernandoen_UK
dc.contributor.authorTocher, Douglas Ren_UK
dc.contributor.authorMourente, Gabrielen_UK
dc.description.abstractAtlantic bluefin tuna (Thunnus thynnus L.; ABT) larvae were fed on enriched rotifers Brachionus rotundiformis and copepod nauplii Acartia tonsa from first feeding to 15 days post hatching. Rotifers were enriched with five different commercial products: OG, MG, AG and RA plus selenium and vitamin E. Copepods (COP) were cultured with the algae Rhodomonas salina. Metabolic processes were studied by determining the expression of 30 genes related to lipid metabolism (transcription factors, fatty acid metabolism and lipid homeostasis), antioxidant enzymes, myogenesis and digestive enzymes. Growth and development parameters and high expression of myogenesis genes myhc2 and tropo indicated that COP were better than enriched rotifers as live prey for first feeding ABT. COP and AG-fed larvae showed the lowest values for the transcription factors pparγ and srebp2. The expression of fas showed differences among treatments, with highest relative expression in COP-fed larvae and those fed with RA rotifers. In relation to fatty acid catabolism, larvae fed RA had the highest aco expression levels, with the lowest observed in those fed COP. The expression profiles of lipid homeostasis genes showed that larvae fed COP had higher fabp2 and 4 expressions. Larvae fed AG showed the lowest lpl expression levels, with highest values observed in larvae fed OG. Regarding antioxidant enzyme gene expression, sod showed highest values in larvae fed COP and RA, with larvae fed MG rotifers showing lowest expression levels. A similar pattern was observed for the expression of cat and gpx1 and 4. The expression of genes for digestive enzymes showed that tryp expression levels were highest in COP-fed larvae but, in contrast, COP-fed larvae showed the lowest anpep and alp levels. ABT larvae fed AG displayed the lowest expression level of pla2. bal1 and bal2 presented similar expression patterns, with highest values in COP-fed ABT and lowest expression in larvae fed AG rotifers. Copepods were a superior live prey for first feeding ABT larvae compared to enriched rotifers, as indicated by the higher growth and flexion index achieved by COP-fed larvae, possibly reflecting the higher protein content of the copepods.en_UK
dc.relationBetancor M, Ortega A, de la Gandara F, Tocher DR & Mourente G (2017) Molecular aspects of lipid metabolism, digestibility and antioxidant status of Atlantic bluefin tuna (T. thynnus L.) larvae during first feeding. Aquaculture, 479, pp. 357-369.
dc.rightsThis item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Betancor M, Ortega A, de la Gandara F, Tocher DR & Mourente G (2017) Molecular aspects of lipid metabolism, digestibility and antioxidant status of Atlantic bluefin tuna (T. thynnus L.) larvae during first feeding, Aquaculture, 479, pp. 357-369. DOI: 10.1016/j.aquaculture.2017.06.011 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.subjectBluefin tunaen_UK
dc.subjectlipid metabolismen_UK
dc.subjectgene expression.en_UK
dc.titleMolecular aspects of lipid metabolism, digestibility and antioxidant status of Atlantic bluefin tuna (T. thynnus L.) larvae during first feedingen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Betancor et al (Revised).pdf] Publisher requires embargo of 12 months after formal publication.en_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationSpanish Institute of Oceanography (IEO)en_UK
dc.contributor.affiliationSpanish Institute of Oceanography (IEO)en_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationUniversity of Cadizen_UK
rioxxterms.apcnot requireden_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorBetancor, Monica|0000-0003-1626-7458en_UK
local.rioxx.authorOrtega, Aurelio|en_UK
local.rioxx.authorde la Gandara, Fernando|en_UK
local.rioxx.authorTocher, Douglas R|0000-0002-8603-9410en_UK
local.rioxx.authorMourente, Gabriel|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameBetancor et al (Revised).pdfen_UK
Appears in Collections:Aquaculture Journal Articles

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