Université de Fribourg

The cost of infidelity to female reed buntings

Suter, Stefan M. ; Bielańska, Joanna ; Röthlin-Spillmann, Sabine ; Strambini, Ludivine ; Meyer, Dietrich R.

In: Behavioral Ecology, 2009, vol. 20, no. 3, p. 601-608

Females of many socially monogamous bird species accept or even actively seek copulations outside the social pair bond. It has been shown that females profit from extrapair fertilization by increased offspring quality, but extrapair mating may also induce costs to females. We measured parental food provisioning and paternity in the reed bunting, Emberiza schoeniclus, a species with biparental...

Université de Fribourg

A distinct reed bunting dawn song and its relation to extrapair paternity

Suter, Stefan M. ; Ermacora, David ; Rieille, Nadia ; Meyer, Dietrich R.

In: Animal Behaviour, 2009///doi:10.1016/j.anbehav.2008.11.002

Elaborate birdsong is thought to have evolved under sexual selection. Extrapair mating can enforce sexual selection and thus the selection of song traits. We investigated song rate and song diversity, two song traits previously shown to be under sexual selection, in relation to paternity success in the reed bunting, Emberiza schoeniclus, a species with high levels of extrapair paternity. We...

Université de Fribourg

Reed bunting females increase fitness through extra-pair mating with genetically dissimilar males

Suter, Stefan M. ; Keiser, Martin ; Feignoux, Raoul ; Meyer, Dietrich R.

In: Proceedings of the Royal Society B: Biological Sciences, 2007, vol. 274, no. 1627, p. 2865-2871

Females of many socially monogamous species accept or even actively seek copulations outside the social pair bond. As females cannot increase the number of offspring with promiscuous behaviour, the question arises why they engage in extra-pair mating. We used microsatellite data to determine paternity, heterozygosity and genetic relatedness in the reed bunting (Emberiza schoeniclus), a...