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dc.contributor.authorNorambuena, Fernandoen_UK
dc.contributor.authorEstevez, Aliciaen_UK
dc.contributor.authorMananos, Evaristoen_UK
dc.contributor.authorBell, J Gordonen_UK
dc.contributor.authorCarazo, Ignacioen_UK
dc.contributor.authorDuncan, Neilen_UK
dc.description.abstractPrevious studies on Senegalese sole (Solea senegalensis) indicated that cultured broodstock (first generation, G1) have lower tissue levels of arachidonic acid (20:4n-6, ARA) than wild counterparts. ARA is metabolized to form prostaglandins (PGs) that are involved in steroid production and follicle maturation in fish. In the present study the effects of different dietary levels of ARA on blood lipid and fatty acid composition, prostaglandin (PGF2α, PGF3α, PGE2 and PGE3) levels and plasmatic steroid levels (11-ketotestosterone, 11-KT, testosterone, T and estradiol, E2) in G1 Senegalese sole were studied. For this purpose, 12 groups of ten fish (1:1 male and female), were fed six diets (each diets was fed to two groups) with different dietary ARA levels over nine months (diets A = 0.7, B = 1.6, C = 2.3, D = 3.2, E = 5.0, F = 6.0% ARA). ARA and CHOL levels in blood showed a significant increase in an ARA dose related manner (P < 0.05) whereas EPA and EPA/ARA ratio were reduced. In males, steroid (11-KT and T) levels increased significantly with increasing dietary ARA in a dose dependent manner, whereas in females E2 did not show any change related to dietary ARA content. Plasma concentration of 3-series PGs (i.e., PGE3 and PGF3α) were reduced in parallel to increased ARA levels in blood (P < 0.05) and levels of PGs 3-series were always higher than 2-series PGs (PGE2 and PGF2α). In conclusion there is an effect of dietary ARA on steroid production of Senegalese sole males, which might have important consequences in the reproduction of cultured fish.en_UK
dc.relationNorambuena F, Estevez A, Mananos E, Bell JG, Carazo I & Duncan N (2013) Effects of graded levels of arachidonic acid on the reproductive physiology of Senegalese sole (Solea senegalensis): fatty acid composition, prostaglandins and steroid levels in the blood of broodstock bred in captivity. General and Comparative Endocrinology, 191, pp. 92-101.
dc.rightsPublished in General and Comparative Endocrinologyby Elsevier; Elsevier believes that individual authors should be able to distribute their accepted author manuscripts for their personal voluntary needs and interests, e.g. posting to their websites or their institution’s repository, e-mailing to colleagues. The Elsevier Policy is as follows: Authors retain the right to use the accepted author manuscript for personal use, internal institutional use and for permitted scholarly posting provided that these are not for purposes of commercial use or systematic distribution. An "accepted author manuscript" is the author’s version of the manuscript of an article that has been accepted for publication and which may include any author-incorporated changes suggested through the processes of submission processing, peer review, and editor-author communications.en_UK
dc.subjectSenegalese soleen_UK
dc.subjectFish blooden_UK
dc.subjectArachidonic acidsen_UK
dc.subjectSolea soleaen_UK
dc.subjectArachidonic acidsen_UK
dc.subjectFish cultureen_UK
dc.subjectFishes Nutritionen_UK
dc.titleEffects of graded levels of arachidonic acid on the reproductive physiology of Senegalese sole (Solea senegalensis): fatty acid composition, prostaglandins and steroid levels in the blood of broodstock bred in captivityen_UK
dc.typeJournal Articleen_UK
dc.citation.jtitleGeneral and Comparative Endocrinologyen_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationIRTA-Sant Carles de la Rapita, Spainen_UK
dc.contributor.affiliationSpanish Council for Scientific Researchen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationIRTA-Sant Carles de la Rapita, Spainen_UK
dc.contributor.affiliationIRTA-Sant Carles de la Rapita, Spainen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorNorambuena, Fernando|en_UK
local.rioxx.authorEstevez, Alicia|en_UK
local.rioxx.authorMananos, Evaristo|en_UK
local.rioxx.authorBell, J Gordon|en_UK
local.rioxx.authorCarazo, Ignacio|en_UK
local.rioxx.authorDuncan, Neil|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameGeneral and Comparative Endocrinology CE-S-12-00300 (1).pdfen_UK
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