Karyotypic Diversity and Evolution in a Sympatric Assemblage of Neotropical Electric Knifefish by Adauto L. Cardoso, Julio C. Pieczarka, Julio C. Pieczarka, William G. R. Crampton, Jonathan S. Ready, Wilsea M. B. de Figueiredo Ready, Joseph C. Waddell, Jonas A. de Oliveira, Cleusa Y. Nagamachi, Cleusa Y. Nagamachi

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Karyotypic and morphological divergence between two cryptic species of Eigenmannia in the Amazon basin with a new occurrence of XX/XY sex chromosomes (Gymnotiformes: Sternopygidae) by Danillo S. Silva, Luiz A. W. Peixoto, Julio C. Pieczarka, Wolmar B. Wosiacki, Jonathan S. Ready, Cleusa Y. Nagamachi

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Chromosome comparison between two species of Phyllostomus (Chiroptera - Phyllostomidae) from Eastern Amazonia, with some phylogenetic insights by Luís R.R. Rodrigues, Regina M.S. Barros, Maria de Fátima L. Assis, Suely A. Marques-Aguiar, Julio C. Pieczarka, Cleusa Y. Nagamachi

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Extensive Karyotype Reorganization in the Fish Gymnotus arapaima (Gymnotiformes, Gymnotidae) Highlighted by Zoo-FISH Analysis by Milla de Andrade Machado, Julio C. Pieczarka, Fernando H. R. Silva, Patricia C. M. O'Brien, Malcolm A. Ferguson-Smith, Cleusa Y. Nagamachi

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Are NORs always located on homeologous chromosomes? A FISH investigation with rDNA and whole chromosome probes in Gymnotus fishes (Gymnotiformes). by Susana S R Milhomem, Priscilla C Scacchetti, Julio C Pieczarka, Malcolm A Ferguson-Smith, José C Pansonato-Alves, Patricia C M O'Brien, Fausto Foresti, Cleusa Y Nagamachi

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Chromosome evolution in Lophyohylini (Amphibia, Anura, Hylinae). by Pablo Suárez, Juan M Ferro, Cleusa Y Nagamachi, Dario E Cardozo, Ailin Blasco-Zúñiga, Jéssica B Silva, Euvaldo Marciano-Jr, Marco A Costa, Victor G D Orrico, Mirco Solé, Igor J Roberto, Miryan Rivera, John E Wiley, Julián Faivovich, Diego Baldo, Julio C Pieczarka

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Chromosome evolution in Cophomantini (Amphibia, Anura, Hylinae). by Juan M Ferro, Dario E Cardozo, Pablo Suárez, Juan M Boeris, Ailin Blasco-Zúñiga, Gastón Barbero, Anderson Gomes, Thiago Gazoni, William Costa, Cleusa Y Nagamachi, Miryan Rivera, Patricia P Parise-Maltempi, John E Wiley, Julio C Pieczarka, Celio F B Haddad, Julián Faivovich, Diego Baldo

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Karyotypes of Manatees: New Insights into Hybrid Formation (<i>Trichechus inunguis</i> × <i>Trichechus m. manatus</i>) in the Amazon Estuary by Renata C. R. Noronha, Bruno R. R. Almeida, Monique C. S. Chagas, Flávia S. Tavares, Adauto L. Cardoso, Carlos E. M. C. Bastos, Natalia K. N. Silva, Alex G. C. M. Klautau, Fábia O. Luna, Fernanda L. N. Attademo, Danielle S. Lima, Luiz A. Sabioni, Maria I. C. Sampaio, Jairo Moura Oliveira, Luís Adriano Santos do Nascimento, Cesar Martins, Marcelo R. Vicari, Cleusa Y. Nagamachi, Julio C. Pieczarka

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