Browsing by Author "Chehebar, Claudio"

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    Phylogeography of the Patagonian otter Lontra provocax: adaptive divergence to marine habitat or signature of southern glacial refugia?
    (2011) Vianna, Juliana A.; Medina-Vogel, Gonzalo; Chehebar, Claudio; Sielfeld, Walter; Olavarria, Carlos; Faugeron, Sylvain
    Background: A number of studies have described the extension of ice cover in western Patagonia during the Last Glacial Maximum, providing evidence of a complete cover of terrestrial habitat from 41 degrees S to 56 degrees S and two main refugia, one in south-eastern Tierra del Fuego and the other north of the Chilo, Island. However, recent evidence of high genetic diversity in Patagonian river species suggests the existence of aquatic refugia in this region. Here, we further test this hypothesis based on phylogeographic inferences from a semi-aquatic species that is a top predator of river and marine fauna, the huillin or Southern river otter (Lontra provocax).