Data from: Signatures of selection in the three-spined stickleback along a small scale brackish water - freshwater transition zone

dc.contributor.affiliationKU Leuven - Konijnendijk, Nellie
dc.contributor.affiliationUniversity of Helsinki - Shikano, Takahito
dc.contributor.affiliationKU Leuven - Daneels, Dorien
dc.contributor.affiliationKU Leuven - Volckaert, Filip A. M.
dc.contributor.affiliationKU Leuven - Raeymaekers, Joost A. M.
dc.contributor.affiliationKU Leuven - Volckaert, Filip A.M.
dc.contributor.authorKonijnendijk, Nellie
dc.contributor.authorShikano, Takahito
dc.contributor.authorDaneels, Dorien
dc.contributor.authorVolckaert, Filip A. M.
dc.contributor.authorRaeymaekers, Joost A. M.
dc.contributor.authorVolckaert, Filip A.M.
dc.coverage.spatialBelgium
dc.coverage.spatialNorth Sea
dc.coverage.spatialthe Netherlands
dc.date.accessioned2025-03-24T15:19:04Z
dc.date.issued2016-07-24
dc.date.issued2016-07-24
dc.descriptionLocal adaptation is often obvious when gene flow is impeded, such as observed at large spatial scales and across strong ecological contrasts. However, it becomes less certain at small scales such as between adjacent populations or across weak ecological contrasts, when gene flow is strong. While studies on genomic adaptation tend to focus on the former, less is known about the genomic targets of natural selection in the latter situation. In this study, we investigate genomic adaptation in populations of the three-spined stickleback Gasterosteus aculeatus L. across a small-scale ecological transition with salinities ranging from brackish to fresh. Adaptation to salinity has been repeatedly demonstrated in this species. A genome scan based on 87 microsatellite markers revealed only few signatures of selection, likely owing to the constraints that homogenizing gene flow puts on adaptive divergence. However, the detected loci appear repeatedly as targets of selection in similar studies of genomic adaptation in the three-spined stickleback. We conclude that the signature of genomic selection in the face of strong gene flow is weak, yet detectable. We argue that the range of studies of genomic divergence should be extended to include more systems characterized by limited geographical and ecological isolation, which is often a realistic setting in nature.
dc.identifierhttps://doi.org/10.5061/dryad.hm926
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/10363
dc.rightsOpen
dc.rights.licensecc-zero
dc.subjectGasterosteus aculetus
dc.subjectcandidate gene
dc.subjectgenome scan
dc.subjectHolocene
dc.titleData from: Signatures of selection in the three-spined stickleback along a small scale brackish water - freshwater transition zone
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