Data from: Introgression from farmed escapees affects the full life cycle of wild Atlantic salmon

• Main Authors: Bolstad, Geir H., Karlsson, Sten, Hagen, Ingerid J., Fiske, Peder, Urdal, Kurt, Sægrov, Harald, Florø-Larsen, Bjørn, Sollien, Vegard P., Østborg, Gunnel, Diserud, Ola H., Jensen, Arne J., Hindar, Kjetil
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Atlantic salmon; Salmo salar
• Online Access: https://doi.org/10.5061/dryad.q573n5tjw

After a half a century of salmon farming, we have yet to understand how the influx of genes from farmed escapees affects the full life history of Atlantic salmon (Salmo salar L.) in the wild. Using scale samples of over 6900 wild adult salmon from 105 rivers, we document that increased farmed genetic ancestry is associated with increased growth throughout life and a younger age at both seaward migration and sexual maturity. There was large among-population variation in the effects of introgression. Most saliently, the increased growth at sea following introgression declined with the population's average growth potential. Variation at two major-effect loci previously shown to be associated with age at maturity was little affected by farmed genetic ancestry and could not explain the observed phenotypic effects of introgression. Our study provides knowledge crucial for redicting the ecological and evolutionary consequences of increased aquaculture production worldwide. Column names: organismID = unique identifier of organism inhouseID = label of each individual used at NINA (not necessarily unique) random_sample = value of 0 means that the individual is considered for the wild population with regards to phenotype expressed in freshwater, but not for phenotypes expressed at sea riverName = name of the river rivID = Unique code for Norwegian watercourse outlets issued by The Norwegian Water Resource and Energ y Directorate (NVE) dataType = collection method yearCapture = the year the fish was captured dateCapture = the date the fish was captured (format: dd.mm.yyyy) sex = sex of the fish, where F denotes female, and M denotes male VGLL3_TOP = genotype at the VGLL3_TOP marker (format: 0,1,2, where 1 is the heterozygous genotype, while 0 and 2 are homozygores) SIX6_TOP = genotype at the SIX6_TOP marker (same format as for VGLL3_TOP) seaAgeMaiden = sea age at first return to freshwater (years) seaAgeCapture = sea age when captured (years) smoltAge = age at outmigration (years) length_mm = length from tip of snout to ...