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Article
Terje Laskemoen, Auteur ; Frode Fossoy, Auteur ; Geir Rudolfsen, Auteur ; Jan T. Lifjeld, AuteurIn passerine species with frequent extrapair mating, young (second calendar year) males often have a lower fertilization success than older (after second calendar year) males. This pattern might be explained by male- or female-driven mechanisms,[...]
Article
Oddmund Kleven, Auteur ; Geir Rudolfsen, Auteur ; Tim Schmoll, AuteurExtra-pairmating is a common alternative reproductive strategy among socially monogamous bird species, but empirical data on the genetic mating systems of most species are still lacking. Here we present the first parentage study in the Grey-head[...]
Article
Extra-pair paternity and sperm length variation in a far northern Great Tit (Parus major) population
Oddmund Kleven, Auteur ; Jan Eivind Østnes, Auteur ; Geir Rudolfsen, Auteur ; Sonja Schindler, Auteur ; Tim Schmoll, AuteurExtra-pair paternity is common among socially monogamous bird species and considered an important driver of post-copulatory sexual selection on ejaculate traits including sperm traits. Patterns of extra-pair paternity and sperm size both show su[...]
Article
Claus Wedekind, Auteur ; Geir Rudolfsen, Auteur ; Alain Jacob, Auteur ; Davnah Urbach, Auteur ; Rudolf Mueller, AuteurSupportive breeding is an important tool in conservation management, but its long-term genetic consequences are not well understood. Among the factors that could affect the genetics of the offspring is sperm competition as a consequence of mixed[...]
Article
Arne Moksnes, Auteur ; Eivin Roskaft, Auteur ; Geir Rudolfsen, Auteur ; Sigrun Skjelseth, Auteur ; Bard G. Stokke, Auteur ; Oddmund Kleven, Auteur ; H. Lisle Gibbs, Auteur ; Marcel Honza, Auteur ; Barbara Taborsky, Auteur ; Yvonne Teuschl, Auteur ; Wolfgang Vogl, Auteur ; Michael Taborsky, AuteurFemales of the obligate brood parasitic common cuckoo Cuculus canorus are assumed to lay eggs of consistent colour and pattern and egg characteristics have been used to separate between different individuals. We tested the "constant egg-type hyp[...]
Article
Oddmund Kleven, Auteur ; Trond Oigarden, Auteur ; Bjorn E. Foyn, Auteur ; Arne Moksnes, Auteur ; Eivin Roskaft, Auteur ; Geir Rudolfsen, Auteur ; Bard G. Stokke, Auteur ; Jan T. Lifjeld, AuteurSocial monogamy is common among passerines whereas genetic monogamy is regarded as rare. Here we report the first study of paternity in the genus Phoenicurus (Aves, Muscicapidae). In the socially monogamous common redstart (Phoenicurus phoenicur[...]
