Presents cytogenetic studies in two populations of Astyanax altiparanae. Difference between
the karyotype formula of the Astyanax bimaculatus and Astyanax altiparanae; Comparison …

Astyanax is a diverse group of Neotropical fishes, whose different forms occupy different
environments. This great diversity is also reflected on cytogenetic aspects and molecular …

The Astyanax species of the bimaculatus group include morphologically similar
representatives that share the same color pattern, corresponding to at least 20 species …

The genus Astyanax comprises small characin fish of the neotropical region. The so-called
'yellow-tailed characins' compose one of the most widely distributed Astyanax groups. A …

The recently described fish species, Astyanax altiparanae (tetra) is common in the upper rio
Paraná basin, and has been reported in the Iguaçu basin. However, its natural origin in the …

Fluorescence in situ hybridization (FISH) was undertaken in order to determinate the
chromosomal distribution pattern of 18S and 5S ribosomal DNAs (rDNA) in four populations …

Cytogenetic data are presented for Astyanax altiparanae populations from three Brazilian
hydrographic systems. The chromosomal data obtained in A. altiparanae support the …

Few reports are available about the ichthyofauna of typical semi-arid rivers, although the
regional diversity has been constantly threatened by human activities, mainly related to …

Cytogenetic analyses were accomplished in two populations of Astyanax altiparanae Garutti
& Britzki, 2000 and one population of Hyphessobrycon eques Steindachner, 1882 …

A discovery of nucleolar organizer regions (NORs) polymorphism and karyological analysis
in the Smith's barb, Puntioplites proctozysron (Bleeker, 1865) from Nong Khai province, in …