First report of B chromosomes in three neotropical thorny catfishes (Siluriformes, Doradidae) gan Takagui, Fábio Hiroshi, Dias, Ana Lucia, Olivan Birindelli, José Luís, Swarça, Ana Claudia, Da Rosa, Renata, Lui, Roberto Laridondo, Fenocchio, Alberto Sergio, Giuliano-Caetano, Lucia

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