Mapping of the 18S and 5S ribosomal RNA genes in Astyanax altiparanae Garutti & Britski, 2000 (Teleostei, Characidae) from the upper Paraná river basin, Brazil by Carlos Alexandre Fernandes, Isabel Cristina Martins-Santos

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B chromosome and NORs polymorphism in Callichthys callichthys (Linnaeus, 1758) (Siluriformes: Callichthyidae) from upper Paraná River, Brazil by Jocicléia Thums Konerat, Vanessa Bueno, Lucas Baumgartner, Isabel Cristina Martins-Santos, Vladimir Pavan Margarido

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Cytogenetic analysis of two locariid species (Teleostei, Siluriformes) from Iguatemi River (Parana River drainage) in Brazil by Carlos Alexandre Fernandes, Diandra Soares Alves, Zaira da Rosa Guterres, Isabel Cristina Martins-Santos

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Cytogenetic analysis of Astyanax laticeps (Cope, 1894) (Ostariophysi: Characidae) from the laguna dos Patos system by Renata da Rosa, Marceléia Rubert, Luiz R. Malabarba, Isabel Cristina Martins-Santos, Lucia Giuliano-Caetano

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Comparative Cytogenetics Among Three Sympatric Hypostomus Species (Siluriformes: Loricariidae): An Evolutionary Analysis in a High Endemic Region by Carla Andreia Lorscheider, Jordana Inácio Nascimento Oliveira, Thais Aparecida Dulz, Viviane Nogaroto, Isabel Cristina Martins-Santos, Marcelo Ricardo Vicari

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