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Phylogeography and Ecological Niche Modeling of the Desert Iguana (Dipsosaurus dorsalis, Baird & Girard 1852) in the Baja California Peninsula
TANIA VALDIVIA CARRILLO
FRANCISCO JAVIER GARCIA DE LEON
María del Cármen Blázquez Moreno
CARINA GUTIERREZ FLORES
Patricia González Zamorano
Acceso Abierto
Atribución-NoComercial-SinDerivadas
URL: https://academic.oup.com/jhered/article/108/6/640/4001390
DOI: 10.1093/jhered/esx064
ISSN: 1465-7333
climatic heterogeneity, Last Glacial Maximum, microsatellites, Pleistocene, Sonoran Desert
"Understanding the factors that explain the patterns of genetic structure or phylogeographic breaks at an intraspecific level is key to inferring the mechanisms of population differentiation in its early stages. These topics have been well studied in the Baja California region, with vicariance and the dispersal ability of individuals being the prevailing hypothesis for phylogeographic breaks. In this study, we evaluated the phylogeographic patterns in the desert iguana (Dipsosaurus dorsalis), a species with a recent history in the region and spatial variation in life history traits. We analyzed a total of 307 individuals collected throughout 19 localities across the Baja California Peninsula with 15 microsatellite DNA markers. Our data reveal the existence of 3 geographically discrete genetic populations with moderate gene flow and an isolation-by-distance pattern presumably produced by the occurrence of a refugium in the Cape region during the Pleistocene Last Glacial Maximum. Bayesian methods and ecological niche modeling were used to assess the relationship between population genetic structure and present and past climatic preferences of the desert iguana. We found that the present climatic heterogeneity of the Baja California Peninsula has a marked influence on the population genetic structure of the species, suggesting that there are alternative explanations besides vicariance. The information obtained in this study provides data allowing a better understanding of how historical population processes in the Baja California Peninsula can be understood from an ecological perspective."
American Genetic Association
2017
Artículo
Journal of Heredity
Inglés
GENÉTICA DE POBLACIONES
Versión publicada
publishedVersion - Versión publicada
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