TY - JOUR T1 - Allozyme variation among three populations of the armored catfish Hypostomus regani (Ihering, 1905) (Siluriformes, Loricariidae) from the Paraná and Paraguay river basins, Brazil JO - Genetics and Molecular Biology A1 - Zawadzki, Cláudio H. A1 - Renesto, Erasmo A1 - Peres, Maria Dolores A1 - Paiva, Suzana SN - 1415-4757 UL - 10.1590/S1415-47572008000400025 VL - 31 Y1 - 2008 PB - Brasil ER -