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	Provedor de dados Neotropical Ichthyology (2) Autor Konerat,Jocicléia Thums (2) Margarido,Vladimir Pavan (2) Baumgartner,Lucas (1) Bueno,Vanessa (1) Frana,Vitor André (1) Graça,Weferson Júnio da (1) Gubiani,Éder André (1) Martins-Santos,Isabel Cristina (1) Mais... Palavra-chave 18S rDNA (1) 5S rDNA (1) Chromosomal rearrangements (1) FISH (1) Gymnotidae (1) Gymnotus pantherinus species-group (1) Karyotype (1) La Plata River basin (1) Supernumerary chromosome (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última B chromosome and NORs polymorphism in Callichthys callichthys (Linnaeus, 1758) (Siluriformes: Callichthyidae) from upper Paraná River, Brazil Neotropical Ichthyology Konerat,Jocicléia Thums; Bueno,Vanessa; Baumgartner,Lucas; Martins-Santos,Isabel Cristina; Margarido,Vladimir Pavan. B chromosomes are extra chromosomes from the normal chromosomal set, found in different organisms, highlighting their presence on the group of fishes. Callichthys callichthys from the upper Paraná River has a diploid number of 56 chromosomes (26 m-sm + 30 st-a) for both sexes, with the presence of a sporadically acrocentric B chromosome. Moreover, one individual presented a diploid number of 57 chromosomes, with the presence of a morphologically ill-defined acrocentric B chromosome in all analyzed cells. The physical mapping of 5S and 18S rDNA shows multiple 5S rDNA sites and only one pair of chromosomes with 18S sites in C. callichthys, except for two individuals. These two individuals presented a third chromosome bearing NORs (Ag-staining and 18S rDNA)... Tipo: Info:eu-repo/semantics/article Palavras-chave: 18S rDNA; 5S rDNA; Chromosomal rearrangements; FISH; Supernumerary chromosome. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300603 Evidence of the color pattern variation in populations of Gymnotus pantanal (Gymnotiformes) from three streams in the upper Paraná River basin, Brazil Neotropical Ichthyology Frana,Vitor André; Graça,Weferson Júnio da; Gubiani,Éder André; Konerat,Jocicléia Thums; Margarido,Vladimir Pavan. Color pattern is an important character in the systematics and alpha-taxonomy of electric fishes of the genus Gymnotus. This paper presents evidence of color variation in populations of G. pantanal found in the streams Jacutinga and Pinheirinho, in the upper Paraná River basin, southern Brazil. Color variations were corroborated for morphological and cytogenetic data. Our results show the importance of integrating morphologic and cytogenetic data in the taxonomy of the Gymnotus species. Tipo: Info:eu-repo/semantics/article Palavras-chave: Gymnotidae; Gymnotus pantherinus species-group; La Plata River basin; Karyotype. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200011 Registros recuperados: 2 Primeira ... 1 ... Última

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