uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Exploring the genetics of aging in a wild passerine bird
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
2007 (English)In: American Naturalist, ISSN 0003-0147, E-ISSN 1537-5323, Vol. 170, no 4, 643-650 p.Article in journal (Refereed) Published
Abstract [en]

Senescence is the decline in survival and reproduction as an organism ages and is known to occur in collared flycatchers Ficedula albicollis. We consider annual fitness (the estimated genetic contribution that an individual makes to next year’s gene pool) as a measure of age‐specific fitness. We apply a restricted maximum likelihood linear mixed‐model approach on 25 years of data on 3,844 male and 4,992 female collared flycatchers. Annual fitness had a significant additive genetic component (h2 of about 4%). Annual fitness declined at later ages in both sexes. Using a random regression animal model, we show that the observed age‐related phenotypic changes in annual fitness were not present on the additive genetic level, contrary to predictions of genetic hypotheses of senescence. Our study suggests that patterns of aging in the wild need to be interpreted with caution in terms of underlying genetics because they may be largely determined by environmental processes.

Place, publisher, year, edition, pages
2007. Vol. 170, no 4, 643-650 p.
Keyword [en]
evolution, quantitative genetics, animal model, senescence, mutation.
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-13324DOI: 10.1086/521241ISI: 000249307700016PubMedID: 17891742OAI: oai:DiVA.org:uu-13324DiVA: diva2:41094
Available from: 2008-01-22 Created: 2008-01-22 Last updated: 2011-01-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Gustafsson, Lars
By organisation
Animal Ecology
In the same journal
American Naturalist
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 181 hits
ReferencesLink to record
Permanent link

Direct link