Genetic and Reproductive Evidence of Natural Hybridization between the Sister Species <i>Rhinella atacamensis</i> and <i>Rhinella arunco</i> (Anura, Bufonidae)

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dc.contributor.authorCorrea, Claudio L.
dc.contributor.authorMendez, Marco A.
dc.contributor.authorVeloso, Alberto
dc.contributor.authorSallaberry, Michel
dc.date.accessioned2025-01-24T00:04:49Z
dc.date.available2025-01-24T00:04:49Z
dc.date.issued2012
dc.description.abstractRhinella atacamensis and Rhinella arunco are sister species which, together, are distributed from 25 degrees S to 38 degrees S in Chile. Until recently they were considered to be allopatric, with the dividing line around 32 degrees S, but in 2007 a possible zone of secondary contact was found in the Estero Pupio (32 degrees S). We investigated the species status of adult individuals of three localities along this creek using AFLP markers. Data were analyzed with a Bayesian method that allowed the identification of different types of hybrids in a population. In two of the localities in the lower part of the watershed, the majority of the individuals were identified as backcrosses of hybrids with R. arunco or first generation hybrids, although a few individuals were classified as pure R. arunco. This information, supplemented by mitochondrial sequences and reproductive observations in both the laboratory and in the field, shows that hybridization has been a recurrent phenomenon at these two localities. By contrast, in the third locality, higher in the watershed, we detected a certain amount of nuclear introgression of R. arunco in a population where Only individuals with phenotypes and mitochondrial genotypes of R. atacamensis were found. Taken together, the genetic data of the three localities suggest that the hybrid zone is a hybrid swarm which is relatively extensive in the watershed of the creek. Identifying the causes of the apparent spatial segregation of the two species in the Estero Pupio will require additional information.
dc.fuente.origenWOS
dc.identifier.doi10.1670/10-266
dc.identifier.eissn1937-2418
dc.identifier.issn0022-1511
dc.identifier.urihttps://doi.org/10.1670/10-266
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101814
dc.identifier.wosidWOS:000313394400021
dc.issue.numero4
dc.language.isoen
dc.pagina.final577
dc.pagina.inicio568
dc.revistaJournal of herpetology
dc.rightsacceso restringido
dc.titleGenetic and Reproductive Evidence of Natural Hybridization between the Sister Species <i>Rhinella atacamensis</i> and <i>Rhinella arunco</i> (Anura, Bufonidae)
dc.typeartículo
dc.volumen46
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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