INVESTIGADORES
SÁNCHEZ SebastiÁn
artículos
Título:
Cytogenetic Studies and Evolutive Considerations in Species of the Calophysus Group (Siluriformes, Pimelodinae)
Autor/es:
SÁNCHEZ, SEBASTIÁN; SWARÇA, ANA CLAUDIA; FENOCCHIO, ALBERTO SERGIO
Revista:
CYTOLOGIA
Editorial:
UNIV TOKYO CYTOLOGIA
Referencias:
Lugar: Tokyo; Año: 2010 vol. 75 p. 223 - 227
ISSN:
0011-4545
Resumen:
In this work, 2 species of the Pimelodidae family, Luciopimelodus pati and Pinirampus pirinampu, were cytogenetically analyzed. Specimens collected from the Paraná River, near Corrientes city, Argentina, were assessed using conventional Giemsa, C-banding, and AgNOR staining. L. pati and P. pirinampu showed 2n=50 chromosomes. The cytogenetic characteristics of the 2 species could be considered as derivate features with respect to the other Pimelodinae fishes. Chromosome fusions and chromatin loss are proposed as the hypothetical origin of the described karyotypes.
