Publicação:
The ultrastructure of spermiogenesis and spermatozoa in Diplomystes mesembrinus

dc.contributor.authorQuagio-Grassiotto, I
dc.contributor.authorOliveira, C.
dc.contributor.authorGosztonyi, A. E.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCtr Nacl Patogon
dc.date.accessioned2014-05-20T13:51:31Z
dc.date.available2014-05-20T13:51:31Z
dc.date.issued2001-06-01
dc.description.abstractSpermiogenesis in Diplomystes mesembrinus, one of the most primitive species from the Siluriformes, occurs in cysts. Differentiation of spermatids is characterized by chromatin compaction, flagellum development, nuclear fossa formation, rotation of the nucleus, and excess cytoplasm elimination. The spermatozoon head is round, the nucleus contains highly condensed chromatin clusters, the midpiece is short, the axoneme shows a 9 + 2 pattern with two discrete lateral projections, and the acrosome is absent. The nuclear fossa penetrates deeply into the nucleus, including the centriolar complex and the start of the axoneme. The single large C-shaped mitochondrion sur rounds the: initial segment of the axoneme. The structural features of D. mesembrinus spermatozoon are similar to the Clupeiformes. (C) 2001 the Fisheries Society of the British Isles.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Morfol, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationCtr Nacl Patogon, RA-9120 Puerto Madryn, Chubut, Argentina
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Botucatu, Dept Morfol, BR-18618000 Botucatu, SP, Brazil
dc.format.extent1623-1632
dc.identifierhttp://dx.doi.org/10.1006/jfbi.2001.1572
dc.identifier.citationJournal of Fish Biology. London: Academic Press Ltd, v. 58, n. 6, p. 1623-1632, 2001.
dc.identifier.doi10.1006/jfbi.2001.1572
dc.identifier.issn0022-1112
dc.identifier.urihttp://hdl.handle.net/11449/18434
dc.identifier.wosWOS:000169579500011
dc.language.isoeng
dc.publisherAcademic Press Ltd
dc.relation.ispartofJournal of Fish Biology
dc.relation.ispartofjcr1.702
dc.relation.ispartofsjr0,822
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectfishpt
dc.subjectspermatidpt
dc.subjectspermpt
dc.subjectstructurept
dc.titleThe ultrastructure of spermiogenesis and spermatozoa in Diplomystes mesembrinusen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderAcademic Press Ltd
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.departmentMorfologia - IBBpt

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