Reproductive indicators during the male sexual maturation of Steindachneridion melanodermatum (Teleostei: Siluriformes: Pimelodidae) in captivity

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dc.contributor.authorTessaro, Lucelia [UNESP]
dc.contributor.authorMazzoni, Talita Sarah
dc.contributor.authorBombardelli, Robie Allan
dc.contributor.authorButze, Arno Juliano [UNESP]
dc.contributor.authorQuagio-Grassiotto, Irani [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFederal University of Alfenas (UNIFAL)
dc.contributor.institutionState University of West Paraná-Universidade Estadual do Oeste do Paraná
dc.date.accessioned2019-10-06T16:42:10Z
dc.date.available2019-10-06T16:42:10Z
dc.date.issued2019-01-01
dc.description.abstractThe reproductive dynamics of a species is important information to have for the maintenance and reproduction of animals in captivity, for either commercial or conservation purposes. Steindachneridion melanodermatum is an endemic fish that has been reproduced by breeding protocols, but knowledge related to the maturation and reproductive cycle of this species is scarce. The purpose of this research was to observe different parameters related to the reproductive biology of males born in captivity over a 24-month period to determine the first maturation and reproductive activity of S. melanodermatum males maintained in captivity. Body development changes (weight and length) were observed, and gonadosomatic index (GSI) and plasma sex steroids (testosterone and 17β-estradiol) were measured monthly. Phases of the reproductive cycle were detected based on macroscopic changes and histological observations of the testes. The obtained data were correlated, demonstrating that the GSI values accompanied testis development and sex steroid peaks. Additionally, immunohistochemistry was performed for the detection of KI-67, 3β-HSD and Vasa protein. Our data analysis indicated that the first maturity in males bred in captivity occurred after one year (at 22-month-old fish), with a reproductive period occurring from September to November, which is the spring season in the southern hemisphere.en
dc.description.affiliationAquaculture Center of the State University of São Paulo CAUNESP – Centro de Aquicultura da Universidade Estadual Paulista “Julio de Mesquita Filho”
dc.description.affiliationDepartment of Cell and Development Biology Institute of Biomedical Sciences Federal University of Alfenas (UNIFAL)
dc.description.affiliationState University of West Paraná-Universidade Estadual do Oeste do Paraná
dc.description.affiliationDepartment of Morphology Botucatu Biosciences Institute State University of São Paulo (UNESP)
dc.description.affiliationUnespAquaculture Center of the State University of São Paulo CAUNESP – Centro de Aquicultura da Universidade Estadual Paulista “Julio de Mesquita Filho”
dc.description.affiliationUnespDepartment of Morphology Botucatu Biosciences Institute State University of São Paulo (UNESP)
dc.identifierhttp://dx.doi.org/10.1111/are.14282
dc.identifier.citationAquaculture Research.
dc.identifier.doi10.1111/are.14282
dc.identifier.issn1365-2109
dc.identifier.issn1355-557X
dc.identifier.scopus2-s2.0-85070109997
dc.identifier.urihttp://hdl.handle.net/11449/189482
dc.language.isoeng
dc.relation.ispartofAquaculture Research
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectfirst maturation
dc.subjectsex steroids
dc.subjectsperm morphology
dc.subjectSurubim do Iguaçu
dc.subjecttestis histology
dc.titleReproductive indicators during the male sexual maturation of Steindachneridion melanodermatum (Teleostei: Siluriformes: Pimelodidae) in captivityen
dc.typeArtigo
unesp.author.orcid0000-0002-3608-7043[1]
unesp.author.orcid0000-0001-6210-9704[5]

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Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp
Artigos - Morfologia - IBB