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Climate change upends selection on ornamentation in a wild bird
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology. Univ Zurich, Dept Evolutionary Biol & Environm Studies, Winterthurerstr 190, CH-8057 Zurich, Switzerland..ORCID iD: 0000-0001-5812-4039
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.ORCID iD: 0000-0001-6566-2863
2017 (English)In: NATURE ECOLOGY & EVOLUTION, ISSN 2397-334X, Vol. 1, no 2, article id UNSP 0039Article in journal (Refereed) Published
Abstract [en]

Secondary sexual traits have high heritabilities and are exposed to strong, environmentally sensitive selection, and so are expected to evolve rapidly in response to sustained environmental change. We examine the eco-evolutionary dynamics of ornament expression in a long-term study population of collared flycatchers, Ficedula albicollis, in which forehead patch size, which positively influences male reproductive success, declined markedly over 34 years. Annual fitness selection on forehead patch size switched from positive to negative during the study, a reversal that is accounted for by rising spring temperatures at the breeding site: highly ornamented males were selectively favoured following cold breeding seasons but selected against following warm breeding seasons. An 'individual animal model' describes a decline in the genetic values of breeding males during the study, which simulations showed was unlikely to result from drift alone. These results are thus consistent with adaptive evolution of a sexually selected trait in response to climate change.

Place, publisher, year, edition, pages
2017. Vol. 1, no 2, article id UNSP 0039
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Evolutionary Biology
Identifiers
URN: urn:nbn:se:uu:diva-344541DOI: 10.1038/s41559-016-0039ISI: 000417169600014PubMedID: 28812603OAI: oai:DiVA.org:uu-344541DiVA, id: diva2:1188314
Funder
Swedish Research CouncilAvailable from: 2018-03-07 Created: 2018-03-07 Last updated: 2018-03-07Bibliographically approved

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Evans, Simon R.Gustafsson, Lars

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