Farm salmon escape event: levels of farm/wild hybridisation
Results of a genetic survey to examine levels of farm/wild hybrid salmon in rivers local to a large-scale farm escape in in south west Scotland and north east England. This occurred in 2020 when MOWI’s Carradale North fish farm shifted position after its seabed anchors became dislodged during Storm Ellen.
Results
Samples and genotyping
In total, 118 sites were fished as part of the survey, with 2,390 and 2,932 samples collected in 2020 and 2021 respectively (Figure 1, Table 1, Appendix 1). An overall genotyping success rate of 99.2% resulted in 5,281 samples available for analysis.
Origin | Sites | Samples genotyped | Samples after QC | Genotyping success (%) |
---|---|---|---|---|
Scotland | ||||
2020 | 90 | 2390 | 2358 | 98.7 |
2021 | 98 | 2594 | 2586 | 99.7 |
England | ||||
2021 | 10 | 338 | 337 | 99.7 |
Totals | 198 | 5322 | 5281 | 99.2 |
Contact
Email: David.Morris@gov.scot
There is a problem
Thanks for your feedback