Meiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auchenorrhyncha)

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dc.contributor.authorCastanhole, Márcia Maria Urbanin [UNESP]
dc.contributor.authorPereira, Luis Lênin Vicente [UNESP]
dc.contributor.authorSouza, Hederson Vinicius de [UNESP]
dc.contributor.authorValério, José Raul
dc.contributor.authorBarbosa, Leonardo Rodrigues
dc.contributor.authorItoyama, Mary Massumi [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2014-05-20T14:01:26Z
dc.date.available2014-05-20T14:01:26Z
dc.date.issued2010-01-01
dc.description.abstractSpittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for this group of insects. For these reasons, we conducted this work, in which the spermatogenesis and nucleolar behavior of Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana were studied. The males possessed testes in the shape of a bunch of grapes; a variable number of testicular lobes per individual and polyploid nuclei composed of several heteropycnotic bodies. A heteropycnotic area was located in the periphery of the nucleus (prophase I); the chiasmata were terminal or interstitial; metaphases I were circular or linear and anaphase showed late migration of the sex chromosome. The chromosome complement had 2n = 19, except for N. entreriana (2n = 15); the spermatids were round with heteropycnotic material in the center and elongated with conspicuos chromatin. The analysis of testes after silver nitrate staining showed polyploid nuclei with three large and three smaller nucleolar bodies. Early prophase cells had an intensely stained nucleolar body located close to the chromatin and another less evident body located away from the chromatin. The nucleolar bodies disintegrated during diplotene. Silver staining occurred in two autosomes, in terminal and subterminal locations, the latter probably corresponding to the nucleolus organizer regions (NORs). The spermatids were round with a round nucleolar body and silver staining was observed in the medial and posterior region of the elongated part of the spermatid head.en
dc.description.affiliationUniversidade Estadual Paulista Instituto de Biociências, Letras e Ciências Exatas Departamento de Biologia
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária Beef Cattle
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária Florestas
dc.description.affiliationUnespUniversidade Estadual Paulista Instituto de Biociências, Letras e Ciências Exatas Departamento de Biologia
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.format.extent244-252
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572010005000025
dc.identifier.citationGenetics and Molecular Biology. Sociedade Brasileira de Genética, v. 33, n. 2, p. 244-252, 2010.
dc.identifier.doi10.1590/S1415-47572010005000025
dc.identifier.fileS1415-47572010000200008.pdf
dc.identifier.issn1415-4757
dc.identifier.lattes2083565673316669
dc.identifier.scieloS1415-47572010000200008
dc.identifier.urihttp://hdl.handle.net/11449/21682
dc.identifier.wosWOS:000278958700008
dc.language.isoeng
dc.publisherSociedade Brasileira de Genética
dc.relation.ispartofGenetics and Molecular Biology
dc.relation.ispartofjcr1.493
dc.relation.ispartofsjr0,638
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectchromosomal characterizationen
dc.subjectKaryotypeen
dc.subjectCytogeneticen
dc.subjectSpermatogenesisen
dc.subjectHolocentric chromosomesen
dc.titleMeiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auchenorrhyncha)en
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/gmb/iaboutj.htm
unesp.author.lattes2083565673316669
unesp.author.orcid0000-0002-0335-4475[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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