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dc.contributor.authorRodrigues, Maira da Silva [UNESP]
dc.contributor.authorSiqueira-Silva, Diógenes Henrique de
dc.contributor.authorQuirino, Patrícia Postingel [UNESP]
dc.contributor.authorNinhaus-Silveira, Alexandre [UNESP]
dc.contributor.authorVeríssimo-Silveira, Rosicleire [UNESP]
dc.date.accessioned2018-12-11T17:13:46Z
dc.date.available2018-12-11T17:13:46Z
dc.date.issued2017-11-01
dc.identifierhttp://dx.doi.org/10.1016/j.theriogenology.2017.07.025
dc.identifier.citationTheriogenology, v. 103, p. 149-152.
dc.identifier.issn0093-691X
dc.identifier.urihttp://hdl.handle.net/11449/174997
dc.description.abstractThis stereological analysis of the types of germ cells and the number of Sertoli cells per cyst in Astyanax altiparanae testes during spermatogenesis is the first such report in Characiformes. Testes of 25 male A. altiparanae were examined. Based on the number of spermatogonia B per cyst (469.2 ± 9.92), we estimated that spermatogonia undergo at least nine mitotic divisions before differentiating into primary spermatocytes. There are four spermatogonia types: undifferentiated spermatogonia A*, undifferentiated spermatogonia, differentiated spermatogonia, and type B spermatogonia. The number of Sertoli cells increased gradually from 1.41 ± 0.51 in the single undifferentiated spermatogonium A* to 9.25 ± 0.50 in cysts of spermatocytes in the leptotene/zygotene stage, possibly related to greater complexity of cellular events during the meiotic stage. The number of germ cells rose dramatically from spermatogonia A (1.0 ± 0) to spermatogonia B (469.2 ± 9.92); however, the quantity of spermatocytes inside the cysts in the leptotene/zygotene stage decreased (300.6 ± 6.97) relative to spermatogonia B, representing a loss of approximately 36% of the former number of cells. This was probably the result of apoptosis, which promotes successful development of the remaining cells during sperm production. The support capacity of Sertoli cells increased gradually during spermatogenesis.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent149-152
dc.language.isoeng
dc.relation.ispartofTheriogenology
dc.sourceScopus
dc.subjectFish reproduction
dc.subjectGerm cells
dc.subjectSpermatogenesis
dc.subjectStereology
dc.subjectTesticular morphometry
dc.titleThe efficiency of spermatogenesis and the support capacity of Sertoli cells in Characiformesen
dc.typeArtigo
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFaculdade de Ciências da Saúde e Biologicas - FACISB
dc.description.affiliationUNESP – Univ. Estadual Paulista Faculdade de Engenharia de Ilha Solteira Departamento de Biologia e Zootecnia L.I.NEO - Laboratório de Ictiologia Neotropical. Av: Brasil, Centro, No 56. Ilha Solteira
dc.description.affiliationUNIFESSPA - UNIVERSIDADE FEDERAL DO SUL E SUDESTE DO PARÁ - Instituto de estudos em Saúde e Biologicas – IESB Faculdade de Ciências da Saúde e Biologicas - FACISB, Folha 31, Quadra 07, Lote especial s/n - Nova Marabá – PA
dc.description.affiliationUNESP – Univ. Estadual Paulista Campus de Ilha Solteira Departamento de Biologia e Zootecnia L.I.NEO - Laboratório de Ictiologia Neotropical, Av: Brasil, Centro, No 56. Ilha Solteira
dc.description.affiliationUnespUNESP – Univ. Estadual Paulista Faculdade de Engenharia de Ilha Solteira Departamento de Biologia e Zootecnia L.I.NEO - Laboratório de Ictiologia Neotropical. Av: Brasil, Centro, No 56. Ilha Solteira
dc.description.affiliationUnespUNESP – Univ. Estadual Paulista Campus de Ilha Solteira Departamento de Biologia e Zootecnia L.I.NEO - Laboratório de Ictiologia Neotropical, Av: Brasil, Centro, No 56. Ilha Solteira
dc.identifier.doi10.1016/j.theriogenology.2017.07.025
dc.rights.accessRightsAcesso aberto
dc.description.sponsorshipIdFAPESP: 2013/24527-8
dc.description.sponsorshipIdFAPESP: 2014/23379-8
dc.identifier.scopus2-s2.0-85026772789
dc.identifier.file2-s2.0-85026772789.pdf
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