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By: Alves, Anderson Luis. - Borba, Rafael Splendore de - Oliveira, Claudio de - Nircho, Mauro - Granado, Ángel - Foresti, FaustoType: ArticleIn: Comparative CytogeneticsVolume: 6Series:Issue:Date: 2012Page Range: 443-452Publication Info: Pensoft Publishers 2012Subjects: Ag-NORs Armoured-catfish centric fission Hypostomus karyotype evolution Loricariidae polyploidy