期刊
MOLECULAR ECOLOGY
卷 19, 期 7, 页码 1273-1282出版社
WILEY
DOI: 10.1111/j.1365-294X.2010.04573.x
关键词
Atlantic salmon; immune-related gene; immunogenetics; landscape genomics; pathogen-driven selection; salmonid
资金
- Academy of Finland, the Finnish Ministry of Agriculture and Forestry
- Finnish Graduate Schools of Population Genetics and Biological Interactions
Using Atlantic salmon (Salmo salar) as a model system, we investigated whether 18 microsatellites tightly linked to immune-relevant genes have experienced different selection pressures than 76 loci with no obvious association with immune function. Immune-relevant loci were identified as outliers by two outlier tests significantly more often than nonimmune linked loci (22% vs. 1.6%). In addition, the allele frequencies of immune relevant markers were more often correlated with latitude and temperature. Combined, these results support the hypothesis that immune-relevant loci more frequently exhibit footprints of selection than other loci. They also indicate that the correlation between immune-relevant loci and latitude may be due to temperature-induced differences in pathogen-driven selection or some other environmental factor correlated with latitude.
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