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dc.contributor.authorAndreata, Artur Antonio
dc.contributor.authorOliveira, Claudio [UNESP]
dc.contributor.authorForesti, Fausto [UNESP]
dc.date.accessioned2014-05-20T15:17:28Z
dc.date.available2014-05-20T15:17:28Z
dc.date.issued2006-01-01
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572006000100013
dc.identifier.citationGenetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 1, p. 62-66, 2006.
dc.identifier.issn1415-4757
dc.identifier.urihttp://hdl.handle.net/11449/30480
dc.description.abstractThe karyotypes of four Hisonotus species (two provisionally-named species A and D, H. nigricauda, and H. leucofrenatus) were found to have the same diploid number of 2n = 54 and interstitial silver-staining nucleolus organizer regions (Ag-NORs) located on the long arm of the largest metacentric pair. The C-banding pattern appeared to be species-specific, with one group (H. nigricauda and the unnamed species A and D) being characterized by small amounts of positive C-banded segments and containing a sub-group (species A and D) identified by a large positive C-banded segment on a small metacentric chromosome pair. The second group contained different samples of H. leucofrenatus, characterized by a larger amount of C-band positive segments spread over several chromosome arms. Heterochromatin appears to play an important evolutionary role in chromosome differentiation in Hisonotus species, especially in H. leucofrenatus. The geographic isolation of several H. leucofrenatus populations seems to have favored chromosome evolution of each sample analyzed.en
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.extent62-66
dc.language.isoeng
dc.publisherSociedade Brasileira de Genética
dc.relation.ispartofGenetics and Molecular Biology
dc.sourceSciELO
dc.subjectfish cytogeneticsen
dc.subjectkaryotypesen
dc.subjectAg-NORsen
dc.subjectC-banden
dc.subjectchromosome evolutionen
dc.titleKaryological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basinsen
dc.typeArtigo
dc.contributor.institutionFundação Educacional de Penápolis
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationFundação Educacional de Penápolis
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Morfologia
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Morfologia
dc.identifier.doi10.1590/S1415-47572006000100013
dc.identifier.scieloS1415-47572006000100013
dc.rights.accessRightsAcesso aberto
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
dc.identifier.fileS1415-47572006000100013.pdf
dc.identifier.lattes0804793944846367
unesp.author.lattes0804793944846367
dc.relation.ispartofjcr1.493
dc.relation.ispartofsjr0,638
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