Comparative analysis of heteropyknotic chromatin and silver-stained material in Platycarenus umbractulatus (Pentatomidae: Discocephalinae)

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dc.contributor.authorSouza, Hederson Vinicius [UNESP]
dc.contributor.authorItoyama, Mary Massumi [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:00:55Z
dc.date.available2014-05-20T14:00:55Z
dc.date.issued2011-06-01
dc.description.abstractThe genus Platycarenus is an unusual member of the subfamily Discocephalinae because it does not have a harlequin lobe. To gather information on this genus, a comparative analysis of heteropyknotic chromatin and silver-stained material was carried out in Platycarenus umbractulatus F. (Pentatomidae: Discocephalinae). The testicular lobes were analyzed separately, and meiotic behavior in the seven lobes was found to be similar, i.e., no difference in the meiotic process between the lobes. Major differences were detected during spermiogenesis. Cells of lobes I, 2, 3, and 7 had similar characteristics, as did lobes 4 and 6, but there were differences between these two groups. The differences between these lobes were in the concentration and location of heteropyknotic chromatin and the amount of silver-stained material. Lobe 5 showed significant differences in comparison with interlobular and intralobular spermatids. Therefore, the results of P. umbractulatus indicate that, although this species does not possess a harlequin lobe, it has differentiated characteristics not yet reported in the literature. Also, a close association of the chromocenter with the nucleolus was demonstrated; it was possible to establish the involvement of sex chromosomes in the formation of the nucleolus. Thus, this study provided insights into the involvement of heteropyknotic chromatin with the nucleolus and also showed the possibility of characterizing the evolution of sperm with a non-fertile function, where more accurate exploration of this theme with other approaches is evident.en
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Biol, Lab Citogenet & Mol Insetos LACIMI, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Biol, Lab Citogenet & Mol Insetos LACIMI, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.sponsorshipFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent65-72
dc.identifierhttp://dx.doi.org/10.1080/07924259.2010.548637
dc.identifier.citationInvertebrate Reproduction & Development. Rehovot: Int Science Services/balaban Publishers, v. 55, n. 2, p. 65-72, 2011.
dc.identifier.doi10.1080/07924259.2010.548637
dc.identifier.issn0792-4259
dc.identifier.lattes2083565673316669
dc.identifier.urihttp://hdl.handle.net/11449/21524
dc.identifier.wosWOS:000290134900001
dc.language.isoeng
dc.publisherInt Science Services/balaban Publishers
dc.relation.ispartofInvertebrate Reproduction & Development
dc.relation.ispartofjcr1.056
dc.relation.ispartofsjr0,409
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSpermatogenesisen
dc.subjectSpermiogenesisen
dc.subjectharlequinen
dc.subjectNucleolusen
dc.subjectTesticular lobesen
dc.titleComparative analysis of heteropyknotic chromatin and silver-stained material in Platycarenus umbractulatus (Pentatomidae: Discocephalinae)en
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderInt Science Services/balaban Publishers
unesp.author.lattes2083565673316669
unesp.author.orcid0000-0002-0335-4475[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