Abstract

CARAMELLO, C.S; SANCHEZ, S  and  JORGE, L.C. Análisis citogenético en Salminus brasiliensis (Pisces, Characidae) del Río Paraná, Corrientes, Argentina. Rev. vet. [online]. 2014, vol.25, n.1, pp.64-66. ISSN 1669-6840.

Salminus brasiliensis is commonly known as "dorado" ("golden"). It is widely distributed in South America. Paraná River’s specimens are characterized by the presence of 50 chromosomes. Karyotipe formula is made up whith 5 metacentric, 10 submetacentric and 10 subtelo-acrocentric chromosomes pairs, with a fundamental number of 80 in both sexes. Chromosomal heteromorfism related whit sex was not detected. Single NORs were observed on the long arm in telomeric location of the submetacentric sixth pair. C-banding revealed a great amount or chromatin blocks in centromeric and pericentromeric regions of several chromosomes pairs. The karyotype of S. brasiliensis from Middle Paraná, Argentina, shows similarity considering individuals of the same species from the Upper Paraná and San Francisco basins (Brazil), thus determining a well conserved karyotypic structure feature.

Keywords : Salminus brasiliensis; Karyotype; C-banding; NOR; Paraná River.

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