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100 1 _aBjörklund, M.
_99903
245 1 4 _aThe genetic structure of crossbills suggests rapid diversification with little niche conservatism /
_cBjörklund, M., Alonso, D., Edelaar, P.
260 _a[S.l.]:
_bLinnean Society,
_c2/2013.
336 _2isbdcontent
_aTexto (visual)
337 _2isbdmedia
_3En línea
_aelectrónico
520 _aAbstract: Conservatism of ecological niches can cause geographical ranges or the formation of new species to be constrained, and might be expected in situations where strong trade-offs result in ecological specialization. Here we address the flexibility of resource use in European crossbills by comparing the ecological and genetic similarities between four Mediterranean and three northern European crossbill populations, all specialized in feeding on a different resource. We used sequence data of one mitochondrial and two nuclear genes from between 211 and 256 individuals. The northern crossbills were genetically too similar to infer which population was more related to the southern ones. Crossbills from the island of Mallorca showed genetic signatures of a stable and isolated population, supporting their past treatment as a locally (co)evolving taxon, and seem to have evolved from an ecologically distinct ancestor. Previous studies in other populations also suggest that genetic similarity does not predict morphological and resource similarity. We estimate that the divergence of all western European crossbills has occurred within the last 11 000 years. Overall, it appears that crossbills can diversify rapidly and with little niche conservatism, but that such potentially reproductively isolated specialists are evolutionarily short-lived.
524 _aBjörklund, M., Alonso, D., Edelaar,P. 2013. The genetic structure of crossbills suggests rapid diversification with little niche conservatism. Biol. J. Linn. Soc. 109(4):908-922
591 _aORNITOLOGIA
592 _aORNITOLOGIA
650 _aadaptive radiation
_911319
650 _aLoxia curvirostra
_99512
650 _ameasures of genetic differentiation
_911320
650 _areproductive isolation
_99898
655 _aArtículo científico
_99312
700 1 _99317
_aAlonso Urmeneta, Daniel
_d1957-
700 1 _aEdelaar, Pim
_911092
710 _94060
_aAranzadi Zientzia Elkartea
710 _eFIRMA
_911321
856 _uhttps://academic.oup.com/biolinnean/article/109/4/908/2415771
942 _2cdu
_cPUBL