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Ecological genetics in the North Atlantic: environmental gradients and adaptation at specific loci

2008Journal article Open access
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dc.contributor.authorSchmidt, P. S.
dc.contributor.authorSerrão, Ester
dc.contributor.authorPearson, G. A.
dc.contributor.authorRiginos, C.
dc.contributor.authorRawson, P. D.
dc.contributor.authorHilbish, Thomas J.
dc.contributor.authorBrawley, S. H.
dc.contributor.authorTrussell, G. C.
dc.contributor.authorCarrington, E.
dc.contributor.authorWethey, D. S.
dc.contributor.authorGrahame, J. W.
dc.contributor.authorBonhomme, F.
dc.contributor.authorRand, D. M.
dc.date.accessioned2014-05-29T14:32:17Z
dc.date.available2014-05-29T14:32:17Z
dc.date.issued2008
dc.date.updated2014-05-21T13:32:19Z
dc.description.abstractThe North Atlantic intertidal community provides a rich set of organismal and environmental material for the study of ecological genetics. Clearly defined environmental gradients exist at multiple spatial scales: there are broad latitudinal trends in temperature, meso-scale changes in salinity along estuaries, and smaller scale gradients in desiccation and temperature spanning the intertidal range. The geology and geography of the American and European coasts provide natural replication of these gradients, allowing for population genetic analyses of parallel adaptation to environmental stress and heterogeneity. Statistical methods have been developed that provide genomic neutrality tests of population differentiation and aid in the process of candidate gene identification. In this paper, we review studies of marine organisms that illustrate associations between an environmental gradient and specific genetic markers. Such highly differentiated markers become candidate genes for adaptation to the environmental factors in question, but the functional significance of genetic variants must be comprehensively evaluated. We present a set of predictions about locus-specific selection across latitudinal, estuarine, and intertidal gradients that are likely to exist in the North Atlantic. We further present new data and analyses that support and contradict these simple selection models. Some taxa show pronounced clinal variation at certain loci against a background of mild clinal variation at many loci. These cases illustrate the procedures necessary for distinguishing selection driven by internal genomic vs. external environmental factors. We suggest that the North Atlantic intertidal community provides a model system for identifying genes that matter in ecology due to the clarity of the environmental stresses and an extensive experimental literature on ecological function. While these organisms are typically poor genetic and genomic models, advances in comparative genomics have provided access to molecular tools that can now be applied to taxa with well-defined ecologies. As many of the organisms we discuss have tight physiological limits driven by climatic factors, this synthesis of molecular population genetics with marine ecology could provide a sensitive means of assessing evolutionary responses to climate change.por
dc.identifier.citationSchmidt, P.S.; Serrão, E.A.; Pearson, G.A.; Riginos, C.; Rawson, P.D.; Hilbish, T.J.; Brawley, S.H.; Trussell, G.C.; Carrington, E.; Wethey, D.S.; Grahame, J.W.; Bonhomme, F.; Rand, D.M.Ecological genetics in the North Atlantic: Environmental gradients and adaptation at specific loci, Ecology, 89, 11 SUPPL., S91-S107, 2008.por
dc.identifier.doihttp://dx.doi.org/10.1890/07-1162.1
dc.identifier.issn0012-9658
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4121
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherEcological Society of Americapor
dc.relation.publisherversionhttp://www.esajournals.org/doi/abs/10.1890/07-1162.1por
dc.subjectAdaptationpor
dc.subjectClimatepor
dc.subjectClinepor
dc.subjectEndogenous selectionpor
dc.subjectHybrid zonepor
dc.subjectIntertidalpor
dc.subjectIntertidalpor
dc.subjectPolymorphismpor
dc.titleEcological genetics in the North Atlantic: environmental gradients and adaptation at specific locipor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage107por
oaire.citation.issue11por
oaire.citation.startPage91por
oaire.citation.titleEcologypor
oaire.citation.volume89por
person.familyNameSerrao
person.familyNamePearson
person.givenNameEster A.
person.givenNameGareth Anthony
person.identifierC-6686-2012
person.identifier113536
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.ciencia-id3315-9919-1A52
person.identifier.orcid0000-0003-1316-658X
person.identifier.orcid0000-0002-0768-464X
person.identifier.ridJ-3911-2013
person.identifier.scopus-author-id7004093604
person.identifier.scopus-author-id55916875600
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication0a10c448-c7f5-4c3b-9488-3917c707e35e
relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f

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