Voltolin, Tatiana Aparecida [UNESP]Penitente, Manolo [UNESP]Mendonça, Bruna Bueno [UNESP]Senhorini, José AugustoForesti, Fausto [UNESP]Porto-Foresti, Fábio [UNESP]2014-05-272014-05-272013-09-05Genetics and Molecular Biology, v. 36, n. 3, p. 347-352, 2013.1415-47571678-4685http://hdl.handle.net/11449/76527The family Prochilodontidae is considered a group with well conserved chromosomes characterized by their number, morphology and banding patterns. Thence, our study aimed at accomplishing a cytogenetic analysis with conventional methods (Giemsa staining, silver staining of the nucleolus organizer regions-AgNOR, and C-banding) and fluorescence in situ hybridization (FISH) with 18S and 5S ribosomal DNA probes in five species of the Prochilodus genus (Prochilodus argenteus, Prochilodus brevis, Prochilodus costatus, Prochilodus lineatus and Prochilodus nigricans) collected from different Brazilian hydrographic basins. The results revealed conservatism in chromosome number, morphology, AgNORs 18S and 5S rDNAs location and constitutive heterochromatin distribution patterns. The minor differences observed in this work, such as an Ag-NOR on a P. argenteus chromosome and a distinct C-banding pattern in P. lineatus, are not sufficient to question the conservatism described for this group. Future work using repetitive DNA sequences as probes for FISH will be interesting to further test the cytogenetic conservatism in Prochilodus. © 2013, Sociedade Brasileira de Genética.347-352engAgNORC-bandingConserved karyotypeFISHHydrographic basinsDNA 18SDNA 5SC bandingCharaciformeschromosome markerchromosome NORchromosome numberchromosome structurecytogeneticsDNA probefluorescence in situ hybridizationgenetic conservationGiemsa stainheterochromatinhydrographykaryotypenonhumanProchilodusProchilodus argenteusProchilodus brevisProchilodus costatusProchilodus lineatusProchilodus nigricansriver basinsilver stainingKaryotypic conservatism in five species of Prochilodus (Characiformes, Prochilodontidae) disclosed by cytogenetic markersArtigo10.1590/S1415-47572013000300008S1415-47572013000300008WOS:000323725500008Acesso aberto2-s2.0-848832770082-s2.0-84883277008.pdf3815338174165832