Data from: Local adaptation within a hybrid species

Fabrice Eroukhmanoff, Jo S. Hermansen, Richard I. Bailey, Stein Are Saether & Glenn-Peter Sætre
Ecological divergence among populations may be strongly influenced by their genetic background. For instance, genetic admixture through introgressive hybridization or hybrid speciation is likely to affect the genetic variation and evolvability of phenotypic traits. We studied geographic variation in two beak dimensions and three other phenotypic traits of the Italian sparrow (Passer italiae), a young hybrid species formed through interbreeding between house sparrows (P. domesticus) and Spanish sparrows (P. hispaniolensis). We found that beak morphology...
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