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dc.contributor.authorPucci, Marcela Baer-
dc.contributor.authorBarbosa, Patricia-
dc.contributor.authorNogaroto, Viviane-
dc.contributor.authorAlmeida, Mara Cristina-
dc.contributor.authorArtoni, Roberto Ferreira-
dc.contributor.authorPansonato-Alves, Jose Carlos-
dc.contributor.authorForesti, Fausto-
dc.contributor.authorMoreira-Filho, Orlando-
dc.contributor.authorVicari, Marcelo Ricardo-
dc.identifier.citationBiological Journal Of The Linnean Society. Hoboken: Wiley-blackwell, v. 111, n. 3, p. 541-553, 2014.-
dc.description.abstractBoth time and low gene flow are the key factors by which different biological species arise. The divergence process among lineages and the development of pre- or postzygotic isolation occur when gene flow events are lacking. The separation among species of the genus Characidium was analysed in relation to the geomorphological mechanisms in river courses, events of captured adjacent upland drainages in south-eastern Brazil, and sex chromosome differences. The ZZ/ZW sex chromosomes of Characidium vary in size, morphology, degree of heterochromatinization, and presence/absence of ribosomal DNA. The goal of this study was to understand the mechanism of sex chromosome differentiation, its close association with the geological history of cladogenetic events among drainages, and reproductive isolation leading to Characidium speciation. The W-specific probe from Characidium gomesi generated a highlighted signal on the entire W chromosome of C. gomesi, Characidium heirmostigmata, Characidium pterostictum, and Characidium sp., instead of karyotypes of three Characidium aff. zebra populations, which showed scattered signals. An evolutionary and biogeographic landscape arose by analysis of ribosomal DNA site location and differentiation of the sex chromosomes, which established mechanisms of reproductive isolation leading to meiotic barriers, keeping the biological unit distinct even if the contact among species was restored. (c) 2014 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 111, 541-553.en
dc.description.sponsorshipFundacao Araucaria (Fundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Estado do Parana)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.sourceWeb of Science-
dc.subjectwhole chromosome paintingen
dc.subjectsex chromosomesen
dc.subjectkaryotypic evolutionen
dc.titlePopulation differentiation and speciation in the genus Characidium (Characiformes: Crenuchidae): effects of reproductive and chromosomal barriersen
dc.contributor.institutionUniv Estadual Ponta Grossa-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.description.affiliationUniv Estadual Ponta Grossa, Dept Biol Estrutural Mol & Genet, BR-84030900 Ponta Grossa, PR, Brazil-
dc.description.affiliationUniv Estadual Paulista, Dept Morfol, BR-18618970 Botucatu, SP, Brazil-
dc.description.affiliationUniv Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Dept Morfol, BR-18618970 Botucatu, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofBiological Journal of The Linnean Society-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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