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Spermatogenesis and nucleolar activity in Triatoma klugi (Triatomine, Heteroptera)

dc.contributor.authorda Costa, Laiana Cristina [UNESP]
dc.contributor.authorVilela de Azeredo-Oliveira, Maria Tercilia [UNESP]
dc.contributor.authorTartarotti, Ester [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:00:53Z
dc.date.available2014-05-20T14:00:53Z
dc.date.issued2008-01-01
dc.description.abstractTriatoma klugi is a Chagas disease vector in the Rio Grande do Sul State. Triatominae chromosomes are holocentric and sex chromosomes segregation is post-reductional. In this paper we describe the karyotype of male T. klugi and a meiotic analysis including the nucleolar behavior during spermatogenesis. Testis cells were analyzed after lacto-acetic orcein and silver nitrate staining. Two autosomes and the heterochromosomes presented nucleolar activity (Ag-NORs) during diplotene-diakinesis. The analysis of metaphase I and II revealed a karyotype with 2n = 20+XY. In metaphase I a prominent nucleolar mass was observed in the cell periphery and small silver grains were detected in metaphase II. During anaphase, the chromosomes segregated in parallel and a typical holocentric late migration behavior was observed. The restoration of the nucleolus was an important feature in this phase. During telophase nucleolar masses persisted and in early spermiogenesis the spermatids presented a small peripheral mass until elongation. The present study is a contribution to the study of chromatin behavior and nucleolar persistence in meiosis.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Biol, BR-15054000 Sao Jose do Rio Preto, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Biol, BR-15054000 Sao Jose do Rio Preto, Brazil
dc.format.extent438-444
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572008000300008
dc.identifier.citationGenetics and Molecular Biology. Ribeirao Pret: Soc Brasil Genetica, v. 31, n. 2, p. 438-444, 2008.
dc.identifier.fileS1415-47572008000300008.pdf
dc.identifier.issn1415-4757
dc.identifier.scieloS1415-47572008000300008
dc.identifier.urihttp://hdl.handle.net/11449/21510
dc.identifier.wosWOS:000256957500008
dc.language.isoeng
dc.publisherSoc Brasil Genetica
dc.relation.ispartofGenetics and Molecular Biology
dc.relation.ispartofjcr1.493
dc.relation.ispartofsjr0,638
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectTriatoma klugien
dc.subjectTriatomineen
dc.subjectCytogeneticen
dc.subjectNucleolusen
dc.subjectKaryotypeen
dc.subjectMeiosisen
dc.titleSpermatogenesis and nucleolar activity in Triatoma klugi (Triatomine, Heteroptera)en
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/gmb/iaboutj.htm
dcterms.rightsHolderSoc Brasil Genetica
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt
unesp.departmentBiologia - IBILCEpt

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