20.500.12556/DiRROS-22174 Lifetime fitness variation across the geographical range in a colour polymorphic species The maintenance of variation (i.e., different phenotypes) for heritable traits that are under selection, despite expectations of selection eroding variation and favouring only the fittest phenotype, represents an evolutionary paradox. Here, we studied variation in life-history traits in five populations of colour polymorphic tawny owls (Strix aluco) across Europe that have been individually studied for 13 years. Tawny owls show heritable plumage colour variation ranging from less pigmented (grey) to more heavily pigmented (brown-red). The breeding life span (BLS), lifetime egg production (LEP), lifetime reproductive success (LRS) and the number of years skipped between breeding attempts (NYS) varied between the study populations, with LEP and LRS varying across colour morphs in a population-specific fashion. Thus, grey tawny owl females have higher lifetime fledgling and egg production than brown-red females in some populations, but vice versa in others. Hence, our findings demonstrate disruptive selection of tawny owl plumage colourations across their European range, which may be one factor maintaining variation in heritable tawny owl colourations. colour polymorphism fitness geographical range life-history traits reproductive investment barvni polimorfizem ekološke značilnosti razširjenost gnezditveni uspeh lesna sova zoologija true false true Angleški jezik Slovenski jezik Neznano 2025-05-07 10:08:28 2025-05-07 10:08:29 2025-10-24 03:50:42 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Soavtorji: Chiara Morosinotto, Jon Brommer, Al Vrezec, Peter Ericsson, Lars-Ove Nilsson, Karel Poprach, Ingar Jostein Øien, Patrik Karell; Opis vira z dne 7. 5. 2025; str. 1-13 iss. 4 Vol. 15 Apr. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-04-27 59 2045-7758 10.1002/ece3.71051 234985731 https://doi.org/10.1002/ece3.71051 1 77883334-2b1a-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32083 RAZ_Bucciolini_Gian_Luigi_2025.pdf RAZ_Bucciolini_Gian_Luigi_2025.pdf 1 1E40231CEFC3005DEE432C1893896791 34c35ac19c9805097aae7e38e803a3be4c61d604f6a6ac09795e8ec604507111 382c4b85-2b1b-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32085 https://doi.org/10.17632/bjh96g9j6m.1 0 f0772eaf-2c01-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32122 Nacionalni inštitut za biologijo 0 0 0