Pattern of nucleolar activity during spermiogenesis in triatomines (Heteroptera, Reduviidae) as analysed by silver staining

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dc.contributor.authorTavares, M. G.
dc.contributor.authordeAzeredoOliveira, MTV
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:17Z
dc.date.available2014-05-20T15:21:17Z
dc.date.issued1997-01-01
dc.description.abstractNucleoli are the sites of biosynthesis of ribosomal precursors. In this work the nucleolar activity at interphase and the meiotic cells of the testis in five species of triatomines were analysed by means of silver staining. Several nucleolar blocks in the polyploid nuclei of testicular tubules were observed, whereas only one nucleolar body could be seen in the spermatogonial nuclei of all five species. A single nucleolar body was evident in the 'confused stage' of Triatoma brasiliensis, T. delpontei, T. lecticularia and T. rubrovaria, while T. sordida presented two nucleolar dots. The existence of small, silver-stained dots in some metaphase I chromosomes of T. brasiliensis and T. sordida is reported. The number of nucleolar dots present in spermatids of each species varied within and among species. It is suggested that in addition to providing information on rRNA biosynthesis, studies of nucleolar organizing activity can also be important sources of data on differentiation patterns and species development.en
dc.description.affiliationUNESP,IBILCE,DEPT BIOL,RUA CRISTOVAO COLOMBO 2265,JARDIM NAZARETH,BR-15054000 S JOSE RIO PR,SP,BRAZIL
dc.description.affiliationUnespUNESP,IBILCE,DEPT BIOL,RUA CRISTOVAO COLOMBO 2265,JARDIM NAZARETH,BR-15054000 S JOSE RIO PR,SP,BRAZIL
dc.format.extent93-103
dc.identifier.citationCytobios. Cambridge: Faculty Press, v. 89, n. 357, p. 93-103, 1997.
dc.identifier.issn0011-4529
dc.identifier.urihttp://hdl.handle.net/11449/32443
dc.identifier.wosWOS:A1997YF04700004
dc.language.isoeng
dc.publisherFaculty Press
dc.relation.ispartofCytobios
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectnucleoluspt
dc.subjectnucleolar organizing regionpt
dc.subjectrRNA biosynthesispt
dc.subjectsilver stainingpt
dc.subjectConfused stagept
dc.subjectTriatomapt
dc.titlePattern of nucleolar activity during spermiogenesis in triatomines (Heteroptera, Reduviidae) as analysed by silver stainingen
dc.typeArtigo
dcterms.rightsHolderFaculty Press
unesp.author.orcid0000-0003-2111-638X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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Artigos - Biologia - IBILCE