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Plasma steroid hormone levels in female flounder Platichthys flesus and the influence of fluctuating hydrostatic pressure

2012Journal article Restricted access
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dc.contributor.authorDamasceno-Oliveira, A.
dc.contributor.authorFernández-Durán, B.
dc.contributor.authorGonçalves, J. M. S.
dc.contributor.authorCouto, Elsa
dc.contributor.authorCanario, Adelino V. M.
dc.contributor.authorCoimbra, José
dc.date.accessioned2014-05-09T13:50:03Z
dc.date.available2014-05-09T13:50:03Z
dc.date.issued2012
dc.date.updated2014-05-08T09:48:44Z
dc.description.abstractThe reproductive cycle in teleosts is timed to guarantee that eggs hatch in the right place at the right time, with environmental factors playing important roles in entraining and controlling the entire process. The effects of some environmental factors, like temperature and photoperiod, are now well understood. There are only a few studies regarding the effects of hydrostatic pressure (HP) on the reproductive cycle, in spite of its importance as a ubiquitous factor in all biological environments and affecting all living organisms. Hydrostatic pressure is of particular importance in fish because they can also experience rapid and cyclic changes in HP due to vertical movements in the water column. The aim of the present research was to investigate the effects of vertical migrations on the reproductive steroids of maturing female flounder. After a 14 day exposure to cyclic hydrostatic pressure (with a period of 12.4 h and with a maximum peak of 800 kPa of absolute hydrostatic pressure), fish showed significantly lower plasmatic concentrations of “5β,3α” steroids, metabolites of the putative maturation-inducing steroid in flounder (17α,20β-dihydroxy-4-pregnen-3-one). Results indicate that environmentally realistic cyclic changes of hydrostatic pressure can influence the metabolism of reproductive steroids. This suggests a physiological role of tidally-associated vertical migrations, affecting oocyte maturation and retarding the reproductive cycle in this species until the spawning ground is attained.por
dc.identifier.citationDamasceno-Oliveira, A.; Fernández-Durán, B.; Gonçalves, J.M.S.; Couto, E.; Canário, A.V.M.; Coimbra, J. Plasma steroid hormone levels in female flounder Platichthys flesus and the influence of fluctuating hydrostatic pressure, Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 163, 3-4, 272-277, 2012.por
dc.identifier.doihttp://dx.doi.org/10.1007/s00360-012-0685-4
dc.identifier.issn1095-6433
dc.identifier.otherAUT: ACA00258;
dc.identifier.urihttp://hdl.handle.net/10400.1/3827
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectPlatichthys flesuspor
dc.subjectHydrostatic pressurepor
dc.subjectVertical migrationspor
dc.subjectSex steroidspor
dc.subjectReproductionpor
dc.titlePlasma steroid hormone levels in female flounder Platichthys flesus and the influence of fluctuating hydrostatic pressurepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage277por
oaire.citation.issue3-4por
oaire.citation.startPage272por
oaire.citation.titleComparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology,por
oaire.citation.volume163por
person.familyNameGonçalves
person.familyNameCouto
person.familyNameCanario
person.givenNameJorge Manuel Santos
person.givenNameElsa
person.givenNameAdelino
person.identifier356846
person.identifier143624
person.identifier.ciencia-id1013-ED6A-65EB
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0001-7704-8190
person.identifier.orcid0000-0001-9336-9963
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridG-5206-2011
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7103326116
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationdd7829e9-e294-4297-8fb2-adf83c8623cf
relation.isAuthorOfPublicationcc3f6bfd-86b1-45b2-a629-cddf25f1c828
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication.latestForDiscoverydd7829e9-e294-4297-8fb2-adf83c8623cf

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