Patterns of nucleolar activity during spermatogenesis of two triatomines, Panstrongylus megistus and P-herreri

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:00:25Z
dc.date.available2014-05-20T14:00:25Z
dc.date.created2014-05-20T14:00:25Z
dc.date.issued1999-07-01
dc.identifierCaryologia. Florence: Univ Florence Botany Inst, v. 52, n. 3-4, p. 177-184, 1999.
dc.identifier0008-7114
dc.identifierhttp://hdl.handle.net/11449/21370
dc.identifierWOS:000087136600011
dc.identifier6045437265946340
dc.description.abstractThe present work analyzed spermatogenesis in two species of triatomines (genus Panstrongylus) using silver-ion impregnation. The sex chromosomes of P. megistus and P. herreri had nucleolar organizing activity and became strongly impregnated during the phases of meiotic prophase I. Fragmentation of the nucleolus occurred in both species during the meiotic cycle. The nucleolar region could be observed up to diakinesis in meiotic prophase after which only nucleolar bodies and fragments were seen. Postmeiotic reactivation of rRNA synthesis occurred in these two species and was probably related to cell differentiation.
dc.languageeng
dc.publisherUniv Florence Botany Inst
dc.relationCaryologia
dc.relation0.608
dc.relation0,281
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectnucleolar persistence
dc.subjectnucleolus
dc.subjectPanstrongylus
dc.subjectspermatogenesis
dc.subjecttriatomines
dc.titlePatterns of nucleolar activity during spermatogenesis of two triatomines, Panstrongylus megistus and P-herreri
dc.typeArtículos de revistas


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