dc.contributor.author	O'Sullivan, Ronan J.
dc.contributor.author	Aykanat, Tutku
dc.contributor.author	Johnston, Susan E.
dc.contributor.author	Kane, Adam
dc.contributor.author	Poole, Russell
dc.contributor.author	Rogan, Ger
dc.contributor.author	Prodöhl, Paulo A.
dc.contributor.author	Primmer, Craig R.
dc.contributor.author	McGinnity, Philip
dc.contributor.author	Reed, Thomas E.
dc.contributor.funder	European Research Council	en
dc.contributor.funder	Horizon 2020	en
dc.contributor.funder	Science Foundation Ireland	en
dc.contributor.funder	Marine Institute, Ireland	en
dc.contributor.funder	Academy of Finland	en
dc.date.accessioned	2021-07-01T14:59:23Z
dc.date.available	2021-07-01T14:59:23Z
dc.date.issued	2019-06-11
dc.date.updated	2021-07-01T14:45:30Z
dc.description.abstract	Comparing observed versus theoretically expected evolutionary responses is important for our understanding of the evolutionary process, and for assessing how species may cope with anthropogenic change. Here, we document directional selection for larger female size in Atlantic salmon, using pedigree-derived estimates of lifetime reproductive success as a fitness measure. We show the trait is heritable and, thus, capable of responding to selection. The Breeder's Equation, which predicts microevolution as the product of phenotypic selection and heritability, predicted evolution of larger size. This was at odds, however, with the observed lack of either phenotypic or genetic temporal trends in body size, a so-called “paradox of stasis.” To investigate this paradox, we estimated the additive genetic covariance between trait and fitness, which provides a prediction of evolutionary change according to Robertson's secondary theorem of selection (STS) that is unbiased by missing variables. The STS prediction was consistent with the observed stasis. Decomposition of phenotypic selection gradients into genetic and environmental components revealed a potential upward bias, implying unmeasured factors that covary with trait and fitness. These results showcase the power of pedigreed, wild population studies—which have largely been limited to birds and mammals—to study evolutionary processes on contemporary timescales.	en
dc.description.sponsorship	Suomen Akatemia, Academy of Finland (Grant/Award Number: 137710 , 141231, 302873, 307593 and 318939); Science Foundation Ireland (Grant/Award Number: 16/RI/3404 and 15/IA/3028)	en
dc.description.status	Peer reviewed	en
dc.description.version	Published Version	en
dc.format.mimetype	application/pdf	en
dc.identifier.citation	O'Sullivan, R. J., Aykanat, T., Johnston, S. E., Kane, A., Poole, R., Rogan, G., Prodöhl, P. A., Primmer, C. R., McGinnity, P. and Reed, T. E. (2019) 'Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection', Ecology and Evolution, 9(12), pp. 7096-7111. doi: 10.1002/ece3.5274	en
dc.identifier.doi	10.1002/ece3.5274	en
dc.identifier.endpage	71111	en
dc.identifier.issn	2045-7758
dc.identifier.issued	12	en
dc.identifier.journaltitle	Ecology and Evolution	en
dc.identifier.startpage	7096	en
dc.identifier.uri	https://hdl.handle.net/10468/11527
dc.identifier.volume	9	en
dc.language.iso	en	en
dc.publisher	Wiley	en
dc.relation.project	info:eu-repo/grantAgreement/EC/H2020::ERC::ERC-STG/639192/EU/Alternative life histories: linking genes to phenotypes to demography/ALH	en
dc.relation.project	info:eu-repo/grantAgreement/SFI/SFI Investigator Programme/15/IA/3028/IE/Wild farmed interactions in a changing world: formulation of a predictive methodology to inform environmental best practice to secure long-term sustainability of global wild and farm fish populations/	en
dc.relation.uri	https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.5274
dc.rights	© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.	en
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	en
dc.subject	Atlantic salmon	en
dc.subject	Pedigree	en
dc.subject	Phenotypic selection	en
dc.subject	Secondary theorem of selection	en
dc.subject	Breeder's equation	en
dc.title	Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection	en
dc.type	Article (peer-reviewed)	en

Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection

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