| Comparative evidence for the evolution of sperm swimming speed by sperm competition and female sperm storage duration in passerine birds O Kleven, F Fossøy, T Laskemoen, RJ Robertson, G Rudolfsen, JT Lifjeld Evolution 63 (9), 2466-2473, 2009 | 166 | 2009 |
| Constraints on host choice: why do parasitic birds rarely exploit some common potential hosts? T Grim, P Samaš, C Moskát, O Kleven, M Honza, A Moksnes, E Røskaft, ... Journal of Animal Ecology 80 (3), 508-518, 2011 | 165 | 2011 |
| Intraspecific variation in sperm length is negatively related to sperm competition in passerine birds O Kleven, T Laskemoen, F Fossøy, RJ Robertson, JT Lifjeld Evolution 62 (2), 494-499, 2008 | 165 | 2008 |
| Nestling discrimination without recognition: a possible defence mechanism for hosts towards cuckoo parasitism? T Grim, O Kleven, O Mikulica Proceedings of the Royal Society of London. Series B: Biological Sciences …, 2003 | 109 | 2003 |
| Microsatellite evolution: Mutations, sequence variation, and homoplasy in the hypervariable avian microsatellite locus HrU10 JA Anmarkrud, O Kleven, L Bachmann, JT Lifjeld BMC Evolutionary Biology 8, 1-10, 2008 | 104 | 2008 |
| Sperm length variation as a predictor of extrapair paternity in passerine birds JT Lifjeld, T Laskemoen, O Kleven, T Albrecht, RJ Robertson PLoS One 5 (10), e13456, 2010 | 100 | 2010 |
| Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus S Hogner, T Laskemoen, JT Lifjeld, J Porkert, O Kleven, T Albayrak, ... Ecology and evolution 2 (12), 2974-2988, 2012 | 92 | 2012 |
| Sperm velocity influence paternity in the Atlantic cod (Gadus morhua L.). G Rudolfsen, L Figenschou, I Folstad, O Kleven Aquaculture Research 39 (2), 2008 | 92 | 2008 |
| Host species affects the growth rate of cuckoo (Cuculus canorus) chicks O Kleven, A Moksnes, E Røskaft, M Honza Behavioral Ecology and Sociobiology 47, 41-46, 1999 | 92 | 1999 |
| A forensic DNA profiling system for Northern European brown bears (Ursus arctos) R Andreassen, J Schregel, A Kopatz, C Tobiassen, PM Knappskog, ... Forensic Science International: Genetics 6 (6), 798-809, 2012 | 91 | 2012 |
| Sperm quantity and quality effects on fertilization success in a highly promiscuous passerine, the tree swallow Tachycineta bicolor T Laskemoen, O Kleven, F Fossøy, RJ Robertson, G Rudolfsen, JT Lifjeld Behavioral Ecology and Sociobiology 64, 1473-1483, 2010 | 87 | 2010 |
| Extrapair mating between relatives in the barn swallow: a role for kin selection? O Kleven, F Jacobsen, RJ Robertson, JT Lifjeld Biology Letters 1 (4), 389-392, 2005 | 84 | 2005 |
| Female tree swallows (Tachycineta bicolor) increase offspring heterozygosity through extrapair mating MK Stapleton, O Kleven, JT Lifjeld, RJ Robertson Behavioral Ecology and Sociobiology 61, 1725-1733, 2007 | 83 | 2007 |
| Male tail streamer length predicts fertilization success in the North American barn swallow (Hirundo rustica erythrogaster) O Kleven, F Jacobsen, R Izadnegahdar, RJ Robertson, JT Lifjeld Behavioral Ecology and Sociobiology 59, 412-418, 2006 | 75 | 2006 |
| Breeding success of common cuckoos Cuculus canorus parasitising four sympatric species of Acrocephalus warblers O Kleven, A Moksnes, E Røskaft, G Rudolfsen, BG Stokke, M Honza Journal of Avian Biology 35 (5), 394-398, 2004 | 65 | 2004 |
| Variation in sperm morphometry and sperm competition among barn swallow (Hirundo rustica) populations T Laskemoen, T Albrecht, A Bonisoli-Alquati, J Cepak, F de Lope, ... Behavioral Ecology and Sociobiology 67, 301-309, 2013 | 62 | 2013 |
| Eggshell strength of an obligate brood parasite: a test of the puncture resistance hypothesis A Antonov, BG Stokke, A Moksnes, O Kleven, M Honza, E Røskaft Behavioral Ecology and Sociobiology 60, 11-18, 2006 | 62 | 2006 |
| Evolution of female promiscuity in Passerides songbirds JT Lifjeld, J Gohli, T Albrecht, E Garcia-del-Rey, LE Johannessen, ... BMC Evolutionary Biology 19, 1-14, 2019 | 58 | 2019 |
| Sperm characteristics and competitive ability in farmed and wild cod JE Skjæraasen, I Mayer, JJ Meager, G Rudolfsen, Ø Karlsen, T Haugland, ... Marine Ecology Progress Series 375, 219-228, 2009 | 56 | 2009 |
| Intraspecific variation in sperm length in two passerine species, the bluethroat Luscinia svecica and the willow warbler Phylloscopus trochilus T Laskemoen, O Kleven, F Fossøy, JT Lifjeld Ornis Fennica 84 (3), 131–139-131–139, 2007 | 56 | 2007 |
