Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/12598
Tipo: Artigo
Título: B chromosome dynamics in Prochilodus costatus (Teleostei, Characiformes) and comparisons with supernumerary chromosome system in other Prochilodus species
Autor(es): Melo, Silvana
Dergam, Jorge Abdala
Utsunomia, Ricardo
Sobrinho-Scudeler, Patrícia Elda
Oliveira, Claudio
Foresti, Fausto
Penitente, Manolo
Porto-Foresti, Fábio
Abstract: Within the genus Prochilodus Agassiz, 1829, five species are known to carry B chromosomes, i.e. chromosomes beyond the usual diploid number that have been traditionally considered as accessory for the genome. Chromosome microdissection and mapping of repetitive DNA sequences are effective tools to assess the DNA content and allow a better understanding about the origin and composition of these elements in an array of species. In this study, a novel characterization of B chromosomes in Prochilodus costatus Valenciennes, 1850 (2n=54) was reported for the first time and their sequence complementarity with the supernumerary chromosomes observed in Prochilodus lineatus (Valenciennes, 1836) and Prochilodus argenteus Agassiz, 1829 was investigated. The hybridization patterns obtained with chromosome painting using the micro B probe of P. costatus and the satDNA SATH1 mapping made it possible to assume homology of sequences between the B chromosomes of these congeneric species. Our results suggest that the origin of B chromosomes in the genus Prochilodus is a phylogenetically old event
Palavras-chave: Additional chromosomes
Genome
Prochilodontidae
Editor: Comparative Cytogenetics
Tipo de Acesso: Open Acess
URI: https://doi.org/10.3897/CompCytogen.v11i2.12784
http://www.locus.ufv.br/handle/123456789/12598
Data do documento: 1-Jul-2017
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