Karyotype description of three species of Loricariidae (Siluriformes) and occurrence of the ZZ/ZW sexual system in Hemiancistrus spilomma Cardoso & Lucinda, 2003

by Renildo Ribeiro de Oliveira, Issakar Lima Souza, Paulo Cesar Venere

Comparative cytogenetics in Astyanax (Characiformes: Characidae) with focus on the cytotaxonomy of the group

by Renata Cristina Claudino de Oliveira Tenório, Carla de Andrade Vitorino, Issakar Lima Souza, Claudio Oliveira, Paulo Cesar Venere