Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico

Reproductive steroid concentration and gonadal development as well as plasma cortisol were investigated during the reproductive period (April to October) of the Pacific red snapper Lutjanus peru, a commercial and important local fishery species in the surrounding areas of Bahía La Paz, Gulf of Calif...

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Autores: Dumas, Silvie, Ramírez Luna, Silvia, Pintos Terán, Pablo, Mañanós, Evaristo L., Tort, Lluis
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/190497
Acceso en línea:http://hdl.handle.net/10261/190497
Access Level:acceso abierto
Palabra clave:Estradiol
Testosterone
Cortisol
Oocyte
Gonadal maturation
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spelling Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, MexicoDumas, SilvieRamírez Luna, SilviaPintos Terán, PabloMañanós, Evaristo L.Tort, LluisEstradiolTestosteroneCortisolOocyteGonadal maturationReproductive steroid concentration and gonadal development as well as plasma cortisol were investigated during the reproductive period (April to October) of the Pacific red snapper Lutjanus peru, a commercial and important local fishery species in the surrounding areas of Bahía La Paz, Gulf of California, Mexico. Gonads in April were immature and characterized by the presence of oocytes at the chromatin nucleolar and perinucleolar stages. In the next month, more than 50% of the fish showed gonads in vitellogenesis, characterized by the presence of cortical alveoli and early vitellogenic (V1) oocytes. Late vitellogenic and mature gonads were present in July, August and September. Postovulatory follicles were observed only in gonads collected in August, indicating spawning activity of these individuals. The gonadosomatic index (GSI) increased significantly (p <0.05) from April and May to July, when it reached its maximum value. A significant increase (p <0.05) in plasma testosterone (T) was also observed in July compared to previous months, and plasma estradiol (E2) concentration was significantly higher (p <0.05) in September than in April. Cortisol concentration was significantly higher (p <0.05) in September than in May. Significant differences (p <0.05) between gonadal stages were observed for GSI and E2 but not for T. We conclude that the Pacific red snapper, in the surrounding areas of Bahía de la Paz, showed an asynchronous ovarian growth starting in May when water temperature increased and that was characterized by several spawning events.Peer reviewedEDP SciencesConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/190497reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/alr/2018023Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1904972026-05-22T06:33:51Z
dc.title.none.fl_str_mv Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
title Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
spellingShingle Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
Dumas, Silvie
Estradiol
Testosterone
Cortisol
Oocyte
Gonadal maturation
title_short Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
title_full Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
title_fullStr Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
title_full_unstemmed Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
title_sort Seasonal steroid variations in relation to maturity stages in the female Pacific red snapper Lutjanus Peru in the Gulf of California, Mexico
dc.creator.none.fl_str_mv Dumas, Silvie
Ramírez Luna, Silvia
Pintos Terán, Pablo
Mañanós, Evaristo L.
Tort, Lluis
author Dumas, Silvie
author_facet Dumas, Silvie
Ramírez Luna, Silvia
Pintos Terán, Pablo
Mañanós, Evaristo L.
Tort, Lluis
author_role author
author2 Ramírez Luna, Silvia
Pintos Terán, Pablo
Mañanós, Evaristo L.
Tort, Lluis
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Estradiol
Testosterone
Cortisol
Oocyte
Gonadal maturation
topic Estradiol
Testosterone
Cortisol
Oocyte
Gonadal maturation
description Reproductive steroid concentration and gonadal development as well as plasma cortisol were investigated during the reproductive period (April to October) of the Pacific red snapper Lutjanus peru, a commercial and important local fishery species in the surrounding areas of Bahía La Paz, Gulf of California, Mexico. Gonads in April were immature and characterized by the presence of oocytes at the chromatin nucleolar and perinucleolar stages. In the next month, more than 50% of the fish showed gonads in vitellogenesis, characterized by the presence of cortical alveoli and early vitellogenic (V1) oocytes. Late vitellogenic and mature gonads were present in July, August and September. Postovulatory follicles were observed only in gonads collected in August, indicating spawning activity of these individuals. The gonadosomatic index (GSI) increased significantly (p <0.05) from April and May to July, when it reached its maximum value. A significant increase (p <0.05) in plasma testosterone (T) was also observed in July compared to previous months, and plasma estradiol (E2) concentration was significantly higher (p <0.05) in September than in April. Cortisol concentration was significantly higher (p <0.05) in September than in May. Significant differences (p <0.05) between gonadal stages were observed for GSI and E2 but not for T. We conclude that the Pacific red snapper, in the surrounding areas of Bahía de la Paz, showed an asynchronous ovarian growth starting in May when water temperature increased and that was characterized by several spawning events.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/190497
url http://hdl.handle.net/10261/190497
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1051/alr/2018023
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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
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