Complex pattern of genetic structuring in the Atlantic salmon (Salmo salar L.) of the River Foyle system in northwest Ireland: disentangling the evolutionary signal from population stochasticity

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dc.contributor.authorEnsing, Dennis
dc.contributor.authorProdöhl, Paulo A.
dc.contributor.authorMcGinnity, Philip
dc.contributor.authorBoylan, Patrick
dc.contributor.authorO'Maoiléidigh, Niall
dc.contributor.authorCrozier, Walter W.
dc.contributor.funderMarine Instituteen
dc.contributor.funderLoughs Agency, Northern Ireland
dc.date.accessioned2018-03-27T10:47:07Z
dc.date.available2018-03-27T10:47:07Z
dc.date.issued2011-11
dc.date.updated2018-03-14T12:34:41Z
dc.description.abstractLittle is known about the microevolutionary processes shaping within river population genetic structure of aquatic organisms characterized by high levels of homing and spawning site fidelity. Using a microsatellite panel, we observed complex and highly significant levels of intrariver population genetic substructure and Isolation-by-Distance, in the Atlantic salmon stock of a large river system. Two evolutionary models have been considered explaining mechanisms promoting genetic substructuring in Atlantic salmon, the member-vagrant and metapopulation models. We show that both models can be simultaneously used to explain patterns and levels of population structuring within the Foyle system. We show that anthropogenic factors have had a large influence on contemporary population structure observed. In an analytical development, we found that the frequently used estimator of genetic differentiation, F-ST, routinely underestimated genetic differentiation by a factor three to four compared to the equivalent statistic Jost's D-est (Jost 2008). These statistics also showed a near-perfect correlation. Despite ongoing discussions regarding the usefulness of "adjusted" F-ST statistics, we argue that these could be useful to identify and quantify qualitative differences between populations, which are important from management and conservation perspectives as an indicator of existence of biologically significant variation among tributary populations or a warning of critical environmental damage.en
dc.description.sponsorshipMarine Institute (Beaufort Marine Research Award)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationEnsing, D., Prodöhl, P. A., McGinnity, P., Boylan, P., O’Maoiléidigh, N. and Crozier, W. W. (2011) 'Complex pattern of genetic structuring in the Atlantic salmon (Salmo salar L.) of the River Foyle system in northwest Ireland: disentangling the evolutionary signal from population stochasticity', Ecology and Evolution, 1(3), pp. 359-372. doi:10.1002/ece3.32en
dc.identifier.doi10.1002/ece3.32
dc.identifier.endpage372en
dc.identifier.issn2045-7758
dc.identifier.issued3en
dc.identifier.journaltitleEcology and Evolutionen
dc.identifier.startpage359en
dc.identifier.urihttps://hdl.handle.net/10468/5696
dc.identifier.volume1en
dc.language.isoenen
dc.publisherBlackwell Publishing Ltd.en
dc.rights© 2011, the Authors. Published by Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectAnthropogenically induced genetic changesen
dc.subjectIsolation-by-Distanceen
dc.subjectMetapopulation and member-vagrant modelsen
dc.subjectSalmo salaren
dc.subjectWithin-river population structureen
dc.titleComplex pattern of genetic structuring in the Atlantic salmon (Salmo salar L.) of the River Foyle system in northwest Ireland: disentangling the evolutionary signal from population stochasticityen
dc.typeArticle (peer-reviewed)en
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