10.18710/DSAPAPBlanco Gonzalez, EnriqueEnriqueBlanco Gonzalez0000-0002-2631-2331UiT The Arctic University of NorwayEspeland, Sigurd HeibergSigurd HeibergEspelandNorwegian Institute of Marine ResearchJentoft, SisselSisselJentoft0000-0001-8707-531XUniversity of OsloHansen, Michael MøllerMichael MøllerHansen0000-0001-5372-4828Aarhus UniversityRobalo, Joana IsabelJoana IsabelRobalo0000-0002-7470-0574ISPA Instituto Universitário de Ciências Psicológicas, Sociais e da VidaStenseth, Nils ChristianNils ChristianStenseth0000-0002-1591-5399University of OsloJorde, Per ErikPer ErikJorde0000-0001-5515-7257Norwegian Institute of Marine ResearchReplication Data for: Interbreeding between local and translocated populations of a cleaner fish in an experimental mesocosm predicts risk of disrupted local adaptationDataverseNO2019Agricultural SciencesEarth and Environmental Sciencescorkwing wrasseSymphodus melopsparentage assignmentmicrosatellitesreproductive fitnessmating behaviorBlanco Gonzalez, EnriqueEnriqueBlanco GonzalezUiT The Arctic University of NorwayUiT The Arctic University of NorwayUiT The Arctic University of NorwayUiT The Arctic University of Norway2019-04-242023-09-2810.1002/ece3.52462010169801333912849533595584text/plaintext/tab-separated-valuestext/plaintext/plaintext/plaintext/plain2.1CC0 1.0This data file contains genotypic information at 11 microsatellite loci for parental analysis of corkwing wrasse (Symphodus melops). Additionally, it also contains phenotypic information from breeders.<P/>Abstract: Translocation of organisms within or outside its native range carries the risk of modifying the community of the recipient ecosystems and induce gene-flow between locally adapted populations or closely related species. In this study, we evaluated the genetic consequences of large scale translocation of cleaner wrasses that has become a common practice within the salmon aquaculture industry in northern Europe to combat sea lice infestation. A major concern with this practice is the potential for hybridization of escaped organisms with the local, recipient wrasse population, and thus potentially introduce exogenous alleles and breaking down coadapted gene-complexes in local populations. We investigated the potential threat for such genetic introgressions in a large semi-natural mesocosm basin. The experimental setting represented a simulated translocation of corkwing wrasse (Symphodus melops) that occurs on a large scale in the Norwegian salmon industry. Parentage assignment analysis of mesocosm’s offspring revealed 30 % (195 out of 651 offspring) interbreeding between the two populations, despite their being genetically (FST = 0.094, p < 0.05) and phenotypically differentiated. Moreover, our results suggest that reproductive fitness of the translocated western population doubled that of the local southern population. Our results confirm that human translocations may overcome the impediments imposed by natural habitat discontinuities and urge for immediate action to manage the genetic resources of these small benthic wrasses.The Research Council of Norway234328