Artículo
Meiotic behavior of two polyploid species of genus Pleurodema (Anura: Leiuperidae) from central Argentina
Salas, Nancy Edith; Valetti, Julian Alonso
; Grenat, Pablo Raúl
; Otero, Manuel Alejandro
; Martino, Adolfo Ludovico
Fecha de publicación:
07/2014
Editorial:
Firenze University Press
Revista:
Acta Herpetologica
ISSN:
1827-9635
e-ISSN:
1827-9643
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Polyploidy is an important evolutionary force but rare in vertebrates. However, in anurans, the genus Pleurodema has polyploid species, two of them tetraploid and one octoploid. The manner in which the chromosomes join in diakinesis can vary among species and, crucially, if they differ in their ploidy levels. In this work, we describe the meiotic configurations in two cryptic species from central Argentina, with different ploidy levels, Pleurodema kriegi (tetraploid) and P. cordobae (octoploid). A total of 306 diakineses from 19 individuals were analyzed. In meiosis, P. kriegi form 22 bivalents, whereas P. cordobae exhibits variation in meiotic figures. We discuss the possible allo- and autopolyploid origin of these species, and we consider that the autopolyploid origin of P. cordobae from P. kriegi might be the most feasible.
Palabras clave:
Pleurodema Cordobae
,
Polyploidy
,
Cytogenetics
,
Diakinesis
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Salas, Nancy Edith; Valetti, Julian Alonso; Grenat, Pablo Raúl; Otero, Manuel Alejandro; Martino, Adolfo Ludovico; Meiotic behavior of two polyploid species of genus Pleurodema (Anura: Leiuperidae) from central Argentina; Firenze University Press; Acta Herpetologica; 9; 1; 7-2014; 109-113
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