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Low frequency of extrapair paternity in the common redstart ( Phoenicurus phoenicurus ) |
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| Authors: | Oddmund Kleven Trond ?igarden Bj?rn E Foyn Arne Moksnes Eivin R?skaft Geir Rudolfsen B?rd G Stokke and Jan T Lifjeld |
| Institution: | (1) Natural History Museum, Department of Zoology, University of Oslo, P.O. Box 1172, Blindern, 0318 Oslo, Norway;(2) Institute of Biology, Department of Ecology and Evolution, University of Tromso, 9037 Tromso, Norway;(3) Nystedsvingen 10, 2420 Trysil, Norway;(4) Department of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway |
| Abstract: | Social 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 phoenicurus) 2.0% (5/253) of offspring in 10.5% (4/38) of the broods examined were sired by extrapair males. The observed pattern of extrapair paternity was consistent among two geographically separate nest-box populations sampled over two years. Our findings reveal low rates of extrapair paternity compared with other passerine birds, suggesting only a minor role of sperm competition in this sexually dichromatic species. |
| Keywords: | Extrapair paternity Sperm competition Phoenicurus phoenicurus |
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