EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Evidence of recent signatures of selection during domestication in an Atlantic salmon population


Evidence of recent signatures of selection during domestication in an Atlantic salmon population



Marine Genomics 26: 41-50



ISSN/ISBN: 1874-7787

PMID: 26723557

DOI: 10.1016/j.margen.2015.12.007

Selective breeding practices in Atlantic salmon aquaculture have been carried out intensively since the 1970s. Along with the phenotypic improvement of fish, we expect to observe genomic regions showing evidence of selection for traits related to growth and age at sexual maturation, as well as traits involved in the domestication process. This is mainly linked to the increase in the frequency of favourable alleles at loci that affect the traits of interest in the breeding population. In this study we searched for signatures of selection in the Cermaq Atlantic salmon broodstock, a Mowi strain, which was derived from wild Norwegian populations, and is now farmed in British Columbia, Canada. A 6.5K SNP array was used to genotype 202 fish from the Cermaq population, and the genotypes were compared with four wild populations from Norway. We used three methods based on FST values to detect signatures of selection. Forty four markers showing divergence in allele frequency were identified as outliers by the three detection methods, suggesting the presence of signatures of selection in the Cermaq population relative to their wild counterparts. Markers identified as outliers are associated with molecular functions that could be related to the selection for economically important traits (e.g., growth) as well as the domestication process (e.g., response to pathogens and environmental stressors). Of particular interest were three outlier markers that had been previously associated with grilsing (i.e., early sexual maturation) an undesirable trait, which has been heavily selected against in Atlantic salmon aquaculture. This study provides clear evidence of the presence of signatures of selection and domestication in a farmed Atlantic salmon population.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 057822388

Download citation: RISBibTeXText

Related references

Comparing genomic signatures of domestication in two Atlantic salmon ( Salmo salar L.) populations with different geographical origins. Evolutionary Applications 12(1): 137-156, 2019

Selection for growth rate and domestication in atlantic salmon. Zeitschrift fuer Tierzuechtung und Zuechtungsbiologie 96(1): 56-59, 1979

Screen for Footprints of Selection during Domestication/Captive Breeding of Atlantic Salmon. Comparative and Functional Genomics 2012: 628204, 2012

Changed Patterns of Genomic Variation Following Recent Domestication: Selection Sweeps in Farmed Atlantic Salmon. Frontiers in Genetics 11: 264, 2020

Multiple Selection Signatures in Farmed Atlantic Salmon Adapted to Different Environments Across Hemispheres. Frontiers in Genetics 10: 901, 2019

Population genomic analyses of early-phase Atlantic Salmon (Salmo salar) domestication/captive breeding. Evolutionary Applications 8(1): 93-107, 2015

Detection of selection signatures of population-specific genomic regions selected during domestication process in Jinhua pigs. Animal Genetics 47(6): 672-681, 2016

Genomic signatures of parasite-driven natural selection in north European Atlantic salmon (Salmo salar). Marine Genomics 39: 26-38, 2018

Expressed sequence tag-linked microsatellites as a source of gene-associated polymorphisms for detecting signatures of divergent selection in atlantic salmon (Salmo salar L.). Molecular Biology and Evolution 22(4): 1067-1076, 2005

Persistence of a southern Atlantic salmon population diversity of natal origins from otolith elemental and Sr isotopic signatures. Canadian Journal of Fisheries and Aquatic Sciences 70(2): 182-197, 2013

Genomic signatures of fine-scale local selection in Atlantic salmon suggest involvement of sexual maturation, energy homeostasis and immune defence-related genes. Molecular Ecology 27(11): 2560-2575, 2018

Evidence of positive selection on the Atlantic salmon CD3 gene. Immunogenetics ch; 59(3): 225-232, 2007

Evidence of positive selection on the Atlantic salmon CD3gammadelta gene. Immunogenetics 59(3): 225-232, 2007

Stable isotope analysis of marine feeding signatures of Atlantic salmon in the North Atlantic. ICES Journal of Marine Science 67(1): 52-61, 2010

A genome scan for selection signatures comparing farmed Atlantic salmon with two wild populations: Testing colocalization among outlier markers, candidate genes, and quantitative trait loci for production traits. Evolutionary Applications 10(3): 276-296, 2017