Nucleolar behaviour during meiosis in four species of phyllostomid bats (Chiroptera, Mammalia)

dc.contributor.authorBenguelini, M. R.
dc.contributor.authorMarchesin, S. R. C.
dc.contributor.authorOliveira, Maria Tercília Vilela de Azeredo [UNESP]
dc.contributor.authorMorielle-Versute, E.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:01:27Z
dc.date.available2014-05-20T14:01:27Z
dc.date.issued2011-01-01
dc.description.abstractWe analyzed the behavior of the nucleolus, nucleolar structures and nucleolus organizer regions (NORs) during meiotic division in four species of phyllostomid bats that have different numbers and locations of NORs. Nucleoli began disassembly at leptotene, and the subcomponents released from the nucleolus were dispersed in the nucleoplasm, associated with perichromosomal regions, or they remained associated with NORs throughout division. In Phyllostomus discolor, a delay in nucleolus disassembly was observed; it disassembled by the end of pachytene. The RNA complexes identiied by acridine orange staining were observed dispersed in the nucleoplasm and associated with perichromosomal regions. FISH with rDNA probe revealed the number of NORs of the species: one NOR in Carollia per spicillata, one pair in Platyrrhinus lineatus and P. discolor, and three pairs in Artibeus lituratus. During pachytene, there was a temporary dissociation of the homologous NORs, which returned to pairing at diplotene. The variation in the number (from one to three pairs) and location of NORs (in sex or autosomal chromosomes, at terminal or interstitial regions) did not seem to interfere with the nucleolar behavior of the different species because no variation in nucleolar behavior that could be correlated with the variation in the number and chromosomal location of NORs was detected.en
dc.description.affiliationDepartamento de Biologia, Instituto de Biociencias, Letras e Ciencias Exatas, Universidade Estadual Paulista Julio de Mesquita Filho, Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespDepartamento de Biologia, Instituto de Biociencias, Letras e Ciencias Exatas, Universidade Estadual Paulista Julio de Mesquita Filho, Sao Jose do Rio Preto, SP, Brazil
dc.format.extent552-565
dc.identifierhttp://dx.doi.org/10.4238/vol10-2gmr1060
dc.identifier.citationGenetics and Molecular Research, v. 10, n. 2, p. 552-565, 2011.
dc.identifier.doi10.4238/vol10-2gmr1060
dc.identifier.fileZOORECZOOR14708061071.pdf
dc.identifier.issn1676-5680
dc.identifier.lattes6045437265946340
dc.identifier.scopus2-s2.0-79955800650
dc.identifier.urihttp://hdl.handle.net/11449/21687
dc.identifier.wosZOOREC:ZOOR14708061071
dc.language.isoeng
dc.relation.ispartofGenetics and Molecular Research
dc.relation.ispartofsjr0,439
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleNucleolar behaviour during meiosis in four species of phyllostomid bats (Chiroptera, Mammalia)en
dc.typeArtigo
dcterms.licensehttp://www.geneticsmr.com/node/2
unesp.author.lattes6045437265946340
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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