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dc.contributor.authorVerissimo-Silveira, R.
dc.contributor.authorGusmao-Pompiani, P.
dc.contributor.authorVicentini, Carlos Alberto [UNESP]
dc.contributor.authorQuagio-Grassiotto, I.
dc.date.accessioned2014-05-20T13:51:23Z
dc.date.available2014-05-20T13:51:23Z
dc.date.issued2006-10-01
dc.identifierhttp://dx.doi.org/10.1111/j.1463-6395.2006.00243.x
dc.identifier.citationActa Zoologica. Hoboken: Wiley-blackwell, v. 87, n. 4, p. 305-313, 2006.
dc.identifier.issn0001-7272
dc.identifier.urihttp://hdl.handle.net/11449/18366
dc.description.abstractIn Salminus, spermiogenesis is cystic and gives origin to a type I aquasperm. Spermatid differentiation is characterized by chromatin condensed into thick fibres, nuclear rotation, nuclear fossa formation, cytoplasmic channel formation, mitochondrial fusion producing long and ramified mitochondria, and the presence of several membranous concentric rings around the plasma membrane that encircles the cytoplasmic channel. In Salminus and Brycon, spermatozoa are very similar. They exhibit a spherical nucleus and chromatin condensed into fibre clusters, and a deep nuclear fossa. They show a long midpiece with few elongate mitochondria at the initial region and a cytoplasmic channel completely encircled by one or two membranous concentric rings. The flagellar axis is perpendicular to the nucleus and exhibits the classic axoneme (9 + 2). The very strong similarity observed between Salminus and Brycon spermatozoa supports the hypothesis that these subfamilies are likely to have a monophyletic origin.en
dc.format.extent305-313
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofActa Zoologica
dc.sourceWeb of Science
dc.subjectCharacidaept
dc.subjectCharaciformespt
dc.subjectspermatozoapt
dc.subjectspermiogenesispt
dc.subjectultrastructurept
dc.titleSpermiogenesis and spermatozoa ultrastructure in Salminus and Brycon, two primitive genera in Characidae (Teleostei : Ostariophysi : Characiformes)en
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Sul (UEMS)
dc.description.affiliationUNESP, IB, Dept Morfol, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUNESP, Dept Biol, Bauru, SP, Brazil
dc.description.affiliationUEMS, Unidade Ensino Coxim, Coxim, MS, Brazil
dc.description.affiliationUNESP, FEIS, Dept Biol & Zootecnia, Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUNESP, IB, Dept Morfol, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Biol, Bauru, SP, Brazil
dc.description.affiliationUnespUNESP, FEIS, Dept Biol & Zootecnia, Ilha Solteira, SP, Brazil
dc.identifier.doi10.1111/j.1463-6395.2006.00243.x
dc.identifier.wosWOS:000240625600008
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências, Baurupt
unesp.author.orcid0000-0002-6816-033X[3]
dc.relation.ispartofjcr1.074
dc.relation.ispartofsjr0,464
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