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Contrasting patterns of phenotypic plasticity in reproductive traits in two great tit (Parus major) populations
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal Ecology.
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2010 (English)In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 64, no 8, 2221-2237 p.Article in journal (Refereed) Published
Abstract [en]

Phenotypic plasticity is an important mechanism via which populations can respond to changing environmental conditions, but we know very little about how natural populations vary with respect to plasticity. Here we use random-regression animal models to understand the multivariate phenotypic and genetic patterns of plasticity variation in two key life-history traits, laying date and clutch size, using data from long-term studies of great tits in The Netherlands (Hoge Veluwe [HV]) and UK (Wytham Woods [WW]). We show that, while population-level responses of laying date and clutch size to temperature were similar in the two populations, between-individual variation in plasticity differed markedly. Both populations showed significant variation in phenotypic plasticity (IxE) for laying date, but IxE was significantly higher in HV than in WW. There were no significant genotype-by-environment interactions (GxE) for laying date, yet differences in GxE were marginally nonsignificant between HV and WW. For clutch size, we only found significant IxE and GxE in WW but no significant difference between populations. From a multivariate perspective, plasticity in laying date was not correlated with plasticity in clutch size in either population. Our results suggest that generalizations about the form and cause of any response to changing environmental conditions across populations may be difficult.

Place, publisher, year, edition, pages
2010. Vol. 64, no 8, 2221-2237 p.
Keyword [en]
Animal model, climate change, genotype environment interaction, heritability, multivariate, phenotypic plasticity, random regression
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-135606DOI: 10.1111/j.1558-5646.2010.00991.xISI: 000280632900003OAI: oai:DiVA.org:uu-135606DiVA: diva2:375270
Available from: 2010-12-07 Created: 2010-12-07 Last updated: 2010-12-07Bibliographically approved

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