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BIBTEX RIS

Cytogenetics of two sympatric Corydoras species (pisces, siluriformes, challichtyidae) of Southern Brazil

2006; Instituto Internacional de Ecologia (Brazil); Volume: 66; Issue: 1b Linguagem: Inglês

10.1590/s1519-69842006000200002

ISSN

1678-4375

Autores

Roberto Ferreira Artoni, Maria Leandra Terêncio, Marcelo Ricardo Vicari, Mauricio Matiello, Marta Margarete Cestari, Luiz Antônio Carlos Bertollo,

Tópico(s)

CRISPR and Genetic Engineering

Resumo

Karyotypic data are presented for two sympatric Corydoras species of the Lagoa Dourada, namely, C. ehrhadti and C. paleatus, which are found in the upper Tibagi river basin (Ponta Grossa, State of Paraná, Brazil). The same diploid number and karyotypic formula were observed in both species/populations. A great similarity in the constitutive heterochromatin distribution and in the activity of nucleolar organizer regions was also found. The use of in situ hybridization with a fluorescent 18S rDNA probe allowed for the identification of the species/populations through the location of ribosomal sites.

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