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dc.contributor.authorReglero, P. (Patricia) 
dc.contributor.authorBlanco, E. (Edurne) 
dc.contributor.authorAlemany, F. (Francisco) (13) | 
dc.contributor.authorFerrá, C.
dc.contributor.authorÁlvarez-Berastegui, D. (Diego) 
dc.contributor.authorOrtega-García, A. (Aurelio) 
dc.contributor.authorde-la-Gándara, F. (Fernando) 
dc.contributor.authorAparicio-González, A. (Alberto) (36) | 
dc.contributor.authorFolkvord, A.
dc.date.accessioned2020-06-21T18:01:48Z
dc.date.available2020-06-21T18:01:48Z
dc.date.issued2018
dc.identifier.issn0171-8630
dc.identifier.urihttp://hdl.handle.net/10508/11436
dc.description.abstractAs part of the endeavor aiming at the domestication of Atlantic bluefin tuna (BFT; Thunnus thynnus), first sexual maturity in captivity was studied by documenting its occurrence and by characterizing the key hormones of the reproductive axis: follicle stimulating hormone (FSH) and luteinizing hormone (LH). The full length sequence encoding for the related hormone b-subunits, bftFSHb and bftLHb, were determined, revealing two bftFSHb mRNA variants, differing in their 50 untranslated region. A quantitative immuno-dot-blot assay to measure pituitary FSH content in BFT was developed and validated enabling, for the first time in this species, data sets for both LH and FSH to be compared. The expression and accumulation patterns of LH in the pituitary showed a steady increase of this hormone, concomitant with fish age, reaching higher levels in adult females compared to males of the same age class. Conversely, the pituitary FSH levels were elevated only in 2Y and adult fish. The pituitary FSH to LH ratio was consistently higher (>1) in immature than in maturing or pubertal fish, resembling the situation in mammals. Nevertheless, the results suggest that a rise in the LH storage level above a minimum threshold may be an indicator of the onset of puberty in BFT females. The higher pituitary LH levels in adult females over males may further support this notion. In contrast three year-old (3Y) males were pubertal while cognate females were still immature. However, it is not yet clear whether the advanced puberty in the 3Y males was a general feature typifying wild BFT populations or was induced by the culture conditions. Future studies testing the effects of captivity and hormonal treatments on precocious maturity may allow for improved handling of this species in a controlled environment which would lead to more cost-efficient farminges_ES
dc.language.isoenges_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectatún rojoes_ES
dc.subjectbluefin tunaes_ES
dc.subjectThunnus thynnuses_ES
dc.subjectbonitoes_ES
dc.subjectSarda sardaes_ES
dc.subjectlarval rearinges_ES
dc.subjectvertical distributiones_ES
dc.subjecttemperature preferencees_ES
dc.titleVertical distribution of Atlantic bluefin tuna Thunnus thynnus and bonito Sarda sarda larvae is related to temperature preferencees_ES
dc.typearticlees_ES
dc.identifier.bibliographicCitationMarine Ecology Progress Series, 594. 2018: 231-243*
dc.description.versionVersión del editores_ES
dc.publisher.centreCentro Oceanográfico de Murciaes_ES
dc.relation.projectIDATAME (CTM2011-29525-C04-02)es_ES
dc.rights.accessRightsembargoedAccesses_ES
dc.identifier.doi10.3354/meps12516
dc.subject.asfafish es_ES
dc.subject.asfavertical migrations es_ES
dc.subject.asfawater column es_ES
dc.subject.asfamigrations es_ES
dc.subject.asfavertical distribution es_ES


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    Atribución-NoComercial-SinDerivadas 3.0 España
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