Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)

26 p., il. y bibliografía

Detalles Bibliográficos
Autores: Carrillo, Manuel, Begtashi, Ideal, Rodríguez, Lucinda, Marín Giménez, Mari Carmen, Zanuy, Silvia
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/44698
Acceso en línea:http://hdl.handle.net/10261/44698
Access Level:acceso abierto
Palabra clave:Precocity
Puberty
Endocrine rhythms
Photoperiod
Sea bass
Sea cages
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spelling Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)Carrillo, ManuelBegtashi, IdealRodríguez, LucindaMarín Giménez, Mari CarmenZanuy, SilviaPrecocityPubertyEndocrine rhythmsPhotoperiodSea bassSea cages26 p., il. y bibliografíaTwo large groups of fingerling (3.2 g) male European sea bass (around 75,000 individuals each) reared in net sea cages for a period of two years were exposed to two different photoperiods starting in June: either ambient photoperiod (37º 24′ N) (NP) or a constant long photoperiod (LP; 18 h light: 6 h dark, 18 L: 6D). Long days had limited effect on somatic growth at the time of incipient gonad development (IGD, 1st annual cycle; November–March), while they were effective at the time of full gonad development (FGD, 2nd annual cycle). Moreover, the annual patterns of morphological indices, i.e., Fulton's condition factor (CF), visceral fat index (VFI) and particularly gonadosomatic index (GSI), were delayed by one or two months as the result of the long days compared to the control group (NP). LP did not prevent the onset of puberty but delayed spermiation by one month, and modified accordingly the phase and/or amplitude of the annual rhythms of pituitary gonadotropin releasing hormone (sbGnRH) content and plasma levels of luteinising hormone (LH) and sex steroids, particularly that of 11-ketotestosterone (11-KT). In general, high levels of sbGnRH (≥4 ng/pit) were associated with elevated plasma LH (1–3 ng/ml at IGD and ≥8 ng/ml at FGD), and the sex steroid peaks usually preceded LH peak in both treatments (1–2 months earlier). Finally, full spermiation and the maximum GSI values coincided with the LH peak, highlighting the close relationship that exists between LH plasma levels and gonadal development.This research was supported by MCYT grant No. 1FD1997-1699-CO2-02/MAR to SZ, and by Generalitat Valenciana Grupos 04/80 to MC; I. Begtashi was funded by an AECI grant.Peer reviewedElsevier201220122010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/44698reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.aquaculture.2009.11.024info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/446982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
title Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
spellingShingle Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
Carrillo, Manuel
Precocity
Puberty
Endocrine rhythms
Photoperiod
Sea bass
Sea cages
title_short Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
title_full Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
title_fullStr Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
title_full_unstemmed Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
title_sort Long photoperiod on sea cages delays timing of first spermiation and enhances growth in male European sea bass (Dicentrarchus labrax)
dc.creator.none.fl_str_mv Carrillo, Manuel
Begtashi, Ideal
Rodríguez, Lucinda
Marín Giménez, Mari Carmen
Zanuy, Silvia
author Carrillo, Manuel
author_facet Carrillo, Manuel
Begtashi, Ideal
Rodríguez, Lucinda
Marín Giménez, Mari Carmen
Zanuy, Silvia
author_role author
author2 Begtashi, Ideal
Rodríguez, Lucinda
Marín Giménez, Mari Carmen
Zanuy, Silvia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Precocity
Puberty
Endocrine rhythms
Photoperiod
Sea bass
Sea cages
topic Precocity
Puberty
Endocrine rhythms
Photoperiod
Sea bass
Sea cages
description 26 p., il. y bibliografía
publishDate 2010
dc.date.none.fl_str_mv 2010
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/44698
url http://hdl.handle.net/10261/44698
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.aquaculture.2009.11.024
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417286485409792
score 15,81155

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