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Cortisol response to air exposure in Solea senegalensis post-larvae is affected by dietary arachidonic acid-to-eicosapentaenoic acid ratio

2011Journal article Restricted access
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dc.contributor.authorMartins, Dulce Alves
dc.contributor.authorEngrola, S.
dc.contributor.authorMorais, S.
dc.contributor.authorBandarra, N.
dc.contributor.authorCoutinho, J.
dc.contributor.authorYúfera, M.
dc.contributor.authorConceição, L. E. C.
dc.date.accessioned2014-07-04T08:54:07Z
dc.date.available2014-07-04T08:54:07Z
dc.date.issued2011
dc.date.updated2014-07-03T13:56:09Z
dc.description.abstractAn experiment was conducted in order to evaluate the effects of feeding frozen Artemia diets differing in arachidonic acid-to-eicosapentaenoic acid ratios (ARA/EPA) on growth, survival and stress coping ability of Senegalese sole post-larvae (19–31 days after hatch). Two experimental diets presenting high (‘High’; 3.0) or low (‘Low’; 0.7) ARA/EPA ratios were tested under two rearing conditions: undisturbed (C) and stressed by a 2-min air exposure every two days (S). Growth, survival and basal cortisol levels were similar between groups indicating that independently of dietary ARA/EPA ratios, fish were able to cope with the repeated stress imposed. Also, cortisol levels at 3 h past air exposure were determined in all groups at the end of the experiment. Among fish fed the ‘Low’ diet, Cgroups seemed to present a quicker recovery from the acute stress (basal-like levels) than S groups. Repeated stress effects were not apparent in fish fed the ‘High’ diet and, relative to basal levels, twofold higher cortisol concentrations were detected at 3 h, in both C and S groups. This study suggests the importance of ARA in steroidogenesis regulation and the modulatory role of EPA in this process. Despite the tolerance to a wide range of dietary ARA/EPA as indicated by growth and survival results, acute stress coping response may be more efficient in Senegalese sole post-larvae fed low ARA/EPA ratios and, under these particular conditions, a faster recovery of cortisol to basal values could be indicative of rearing conditions (undisturbed vs. repeatedly stressed).por
dc.identifier.citationMartins, D.A.; Engrola, S.; Morais, S.; Bandarra, N.; Coutinho, J.; Yúfera, M.; Conceição, L.E.C. Cortisol response to air exposure in Solea senegalensis post-larvae is affected by dietary arachidonic acid-to-eicosapentaenoic acid ratio, Fish Physiology and Biochemistry, 37, 4, 733-743, 2011.por
dc.identifier.doihttp://dx.doi.org/10.1007/s10695-011-9473-4
dc.identifier.issn0920-1742
dc.identifier.urihttp://hdl.handle.net/10400.1/4647
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.subjectSolea senegalensispor
dc.subjectCortisolpor
dc.subjectStresspor
dc.subjectFatty acidspor
dc.subjectArachidonic acidpor
dc.subjectEicosapentaenoic acidpor
dc.titleCortisol response to air exposure in Solea senegalensis post-larvae is affected by dietary arachidonic acid-to-eicosapentaenoic acid ratiopor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage743por
oaire.citation.issue4por
oaire.citation.startPage733por
oaire.citation.titleFish Physiology and Biochemistrypor
oaire.citation.volume37por
person.familyNameEngrola
person.givenNameSofia
person.identifier237846
person.identifier.ciencia-idA610-29E7-9B83
person.identifier.orcid0000-0002-5244-5541
person.identifier.ridA-2485-2012
person.identifier.scopus-author-id8669620600
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication51be5a20-df9c-4a90-85eb-51d779642caa
relation.isAuthorOfPublication.latestForDiscovery51be5a20-df9c-4a90-85eb-51d779642caa

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