Genetic Variation at Microsatellite DNA Loci and MHC Genes in Domesticated Atlantic Salmon Strains of British Columbia

Description

Genetic variation at eleven microsatellite and three MHC loci will be examined in 20 substrains (1,800 fish) of Atlantic salmon reared in the BC industry. These will be samples of the three main strains of Atlantic salmon reared in BC (Mowi, McConnell and Cascade) as well as some hybrid strains, sampled from all producers. Allele and genotype frequencies will be calculated for each substrain, and will be examined for evidence of bottlenecks during domestication. The genetic diversity among the domesticated strains, and the substrains maintained by each company, will be compared with that observed in wild Atlantic salmon populations of similar geographic origins, and with that observed in domesticated strains elsewhere. The observed microsatellite and MHC variation will be evaluated for utility in individual identification and pedigree maintenance. Recommendations will be provided to companies and the industry as a whole on use of strains, hybridization of strains/substrains and acquisition of additional genetic material to maximize the benefit obtained from selective breeding programs.

Program Name

Aquaculture Collaborative Research and Development Program (ACRDP)

Year(s)

2002 - 2003

Ecoregion(s)

Pacific: North Coast and Hecate Strait

Principal Investigator(s)

Ruth Withler
Email: WithlerR@pac.dfo-mpo.gc.ca