Vol. 9 No. 1 (2014)
Short Note

Meiotic behavior of two polyploid species of genus <em>Pleurodema</em> (Anura: Leiuperidae) from central Argentina

Nancy Salas
Ecología - Facultad de Ciencias Exactas, Físico qúimicas y Naturales - Universidad Nacional de Río Cuarto
Julián Valetti
Ecología - Facultad de Ciencias Exactas, Físico qúimicas y Naturales - Universidad Nacional de Río Cuarto
Pablo Grenat
Ecología - Facultad de Ciencias Exactas, Físico qúimicas y Naturales - Universidad Nacional de Río Cuarto
Manuel Otero
Ecología - Facultad de Ciencias Exactas, Físico qúimicas y Naturales - Universidad Nacional de Río Cuarto
Adolfo Martino
Ecología - Facultad de Ciencias Exactas, Físico qúimicas y Naturales - Universidad Nacional de Río Cuarto

Published 2014-06-30

How to Cite

Salas, N., Valetti, J., Grenat, P., Otero, M., & Martino, A. (2014). Meiotic behavior of two polyploid species of genus <em>Pleurodema</em> (Anura: Leiuperidae) from central Argentina. Acta Herpetologica, 9(1), 109–113. https://doi.org/10.13128/Acta_Herpetol-12658

Abstract

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.

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