Artículos de revistas
Natural interspecific hybridization in Odontophrynus (Anura: Cycloramphidae)
Fecha
2010-10Registro en:
Pereyra, Martín Oscar; Marti, Dardo Andrea; Lescano, Julián Norberto; Rosset, Sergio Daniel; Baldo, Juan Diego; Natural interspecific hybridization in Odontophrynus (Anura: Cycloramphidae); Brill Academic Publishers; Amphibia-Reptilia; 30; 4; 10-2010; 571-575
0173-5373
CONICET Digital
CONICET
Autor
Pereyra, Martín Oscar
Marti, Dardo Andrea
Lescano, Julián Norberto
Rosset, Sergio Daniel
Baldo, Juan Diego
Resumen
The frog genus Odontophrynus is a composite of diploid and tetraploid populations and species that are widely distributed in South America. Some of the several genetic studies on this group report the production of artificial hybrids but only a single case of natural hybridization has been documented, in southern Brazil. In this study we report the finding of an interspecific natural hybrid specimen in central Argentina. We present morphological and cytogenetical evidence that the diploid taxa Odontophrynus cordobae and O. occidentalis are the parental species. The hybrid genome exhibited problematic pairing and segregation of homeologue chromosomes during meiosis, and the production of non-reduced gametes. © 2009 Koninklijke Brill NV, Leiden.