SYNAPTONEMAL COMPLEX-ANALYSIS IN SPERMATOCYTES AND OOCYTES OF RAINBOW-TROUT, ONCORHYNCHUS-MYKISS (PISCES, SALMONIDAE) - THE PROCESS OF AUTOSOME AND SEX-CHROMOSOME SYNAPSIS

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dc.contributor.authorOliveira, C.
dc.contributor.authorForesti, F.
dc.contributor.authorRigolino, M. G.
dc.contributor.authorTabata, Y. A.
dc.contributor.institutionINST PESCA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:23:44Z
dc.date.available2014-05-20T15:23:44Z
dc.date.issued1995-05-01
dc.description.abstractThe surface-spreading synaptonemal complex (SC) technique was employed to analyze spermatocytes and oocytes of rainbow trout in order to visualize the process of autosome and sex chromosome synapsis in this species. The structure of lateral elements (LEs) of the SC and the chromosome synapsis process at the stages of leptotene, zygotene and pachytene are described. Comparative analysis of SCs of spermatocytes and oocytes showed a difference in the synaptic process, i.e. in spermatocytes all LEs were synapsed before the appearance of centromeric regions in the biarmed elements, while in the oocytes some fully synapsed LEs, including the centromeric region of the biarmed elements, were found together with fully or partially unsynapsed LEs. In males the sex chromosome synapsis starts only after all autosomes have synapsed. Irregular synapses involving three or four LEs were found in 3.4% of the cells analyzed in mid or late zygotene. Multivalents were found in males and females. Some aspects of initial meiotic development and their implications in rainbow trout cytogenetics, genetics and evolution are discussed.en
dc.description.affiliationINST PESCA,ESTACAO EXPTL SALMONICULTURA,SAO PAULO,BRAZIL
dc.format.extent182-190
dc.identifierhttp://dx.doi.org/10.1007/BF00710712
dc.identifier.citationChromosome Research. London: Rapid Science Publishers, v. 3, n. 3, p. 182-190, 1995.
dc.identifier.doi10.1007/BF00710712
dc.identifier.issn0967-3849
dc.identifier.lattes0804793944846367
dc.identifier.urihttp://hdl.handle.net/11449/34451
dc.identifier.wosWOS:A1995QR61200006
dc.language.isoeng
dc.publisherRapid Science Publishers
dc.relation.ispartofChromosome Research
dc.relation.ispartofjcr2.909
dc.relation.ispartofsjr1,425
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectFISHpt
dc.subjectMEIOSISpt
dc.subjectNORSpt
dc.subjectRAINBOW TROUTpt
dc.subjectSEX CHROMOSOMESpt
dc.subjectSYNAPTONEMAL COMPLEXpt
dc.titleSYNAPTONEMAL COMPLEX-ANALYSIS IN SPERMATOCYTES AND OOCYTES OF RAINBOW-TROUT, ONCORHYNCHUS-MYKISS (PISCES, SALMONIDAE) - THE PROCESS OF AUTOSOME AND SEX-CHROMOSOME SYNAPSISen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderRapid Science Publishers
unesp.author.lattes0804793944846367
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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