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Geographical location of the populations used in this study. Dark and light areas indicate the range of O. c. algirus and O. c. cuniculus, respectively. The putative hybrid zone is separating both ranges (adapted from Geraldes et al. (2008b)). Numbers in the figure correspond to populations as follows: 1- Pancas; 2- Huelva; 3- Sevilla; 4- Alicante; 5- Rosell; 6- Zaragoza; 7- Tarragona.
