Artículo
First cytogenetic characterization of Loricaria simillima (Loricariidae, Siluriformes) from Paraná River (Argentina) with emphasis in cytotaxonomy of Loricaria
Benitez, Mauricio Fabián
; Pastori, María Cristina; Garrido, Gladys Graciela; Takagui, Fabio; Giulano, Lucia; Fenocchio, Alberto Sergio
Fecha de publicación:
11/2017
Editorial:
Univ Florence Botany Inst
Revista:
Caryologia
ISSN:
0008-7114
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This work aims to establish some cytogenetic characteristics of Loricaria simillima from Paraná River. The obtained results show that L. simillima has a 2n = 64 diploid number, with 12 metacentric, 12 sub-metacentric and 40 sub-telo/acrocentric chromosomes. No chromosomal differences were found between sexes. The nucleolus organizer region (NOR) revealed by Ag-NOR was located next to the centromeric region in the short arm of pair 8. The C-bands were pale and detected in pericentromeric regions of the most chromosomes and interstitiallyon a sub-metacentric pair, coincident with secondary and NORs constriction. A conspicuous interstitial band on an acrocentric chromosome was also observed. Finally DAPI and CMA3 fluorescent bandings showed G-C richness at the NOR region. Present data evidence a great similarity among L. simillima, L. cataphracta and L. carinata, reinforcing the hypothesis that they constitute a closely related phylogenetic group.
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Articulos(IBS)
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Citación
Benitez, Mauricio Fabián; Pastori, María Cristina; Garrido, Gladys Graciela; Takagui, Fabio; Giulano, Lucia; et al.; First cytogenetic characterization of Loricaria simillima (Loricariidae, Siluriformes) from Paraná River (Argentina) with emphasis in cytotaxonomy of Loricaria; Univ Florence Botany Inst; Caryologia; 70; 1; 11-2017; 29-33
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