Local adaptation in Citril finches: Divergent selection, asymmetric movements, preference for familiars and other stories

Le 16 Février 2018
11h30 Grande Salle CEFE (1919 Rte de Mende, 1e étage, aille C)

Juan Carlos SENAR
Museu de Ciencies Naturals de Barcelona jcsenar@bcn.cat

(Seminar in English)

The Citril finch (Serinus citrinella) is a small granivorous non-territorial Cardueline finch breeding at high den-sities in the Pyrenees. In this area, the interaction between a Mediterranean influence and high altitudes creates a significant contrast between north- and south- facing slopes, so that patches of highly differentiat-ed habitats appear at very close proximity. Analyses have shown that birds inhabiting the two slopes have dif-ferentiated in behaviour, diet, breeding ecology, population dynamics, morphology and genetics. Move-ments between the two populations are asymmetric, from south (i.e. bad quality) to north (i.e. good quality) facing slopes, in a dynamics that we coined of "sources and pools". The populations intermix during winter, when pairing takes place, but the mechanism of mating preference for familiar individuals maintains the dif-ferentiation. The system can be maintained by a good adaptation to bad localities.

Recent publications:
Senar, J. C., F. Mateos-González, F. Uribe, and L. Arroyo. 2013. Familiarity adds to attractiveness in matters of siskin mate choice. Proceedings of the Royal Society of London series B 280:20132361.
Björklund, M., A. Borras, J. Cabrera, and J. C. Senar. 2015. Increase in body size is correlated to warmer winters in a passer-ine bird as inferred from time series data. Ecology and Evolution 5:59–72.
Senar, J. C., L. Z. Garamszegi, V. Tilgar, C. Biard, G. Moreno-Rueda, P. Salmón, J. M. Rivas, P. Sprau, N. J. Dingemanse, A. Charmantier, V. Demeyrier, H. Navalpotro, and C. Isaksson. 2017. Urban Great Tits (Parus major) Show Higher Distress Call-ing and Pecking Rates than Rural Birds across Europe. Frontiers in Ecology and Evolution 5:163.


Anne Charmantier : Anne.Charmantier@cefe.cnrs.fr

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