Journal
AQUACULTURE RESEARCH
Volume 42, Issue 9, Pages 1323-1331Publisher
WILEY
DOI: 10.1111/j.1365-2109.2010.02720.x
Keywords
microsatellite; farmed escapee; forensic; genetic drift; assignment
Categories
Funding
- Institute of Marine Research
- Norwegian Department of Fisheries
Ask authors/readers for more resources
Seven samples, each consisting of approximately 50 Atlantic salmon, were collected from five marine farms in Norway. These farms reported to rear fish originating from the same commercial breed; however, all samples followed a unique route of production from breeder to marine farm via egg, fry and smolt producers. A group of farmed escapees (n = 50) were also captured. Following genotyping with 18 microsatellite loci, the global F-ST was 0.083, and pair-wise values were as high as 0.158. Four clusters, with varying degrees of genetic differentiation, were identified among samples from the farms, and the source of the escapees was identified successfully. It is suggested that the genetic differences observed among samples from the farms were created through the process of genetic drift, facilitated by parallel sub-strains, extensive within-strain selection and low to moderate numbers of adults contributing to batches of eggs. In conclusion, this study has demonstrated that genetic identification of escaped Atlantic salmon, back to the farm of origin, may be possible even when farms rear fish reported to originate from a single breeder.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available