Table 4

Relationships between the frequency of farmed escaped salmon in the spawning population, and observed changes in various genetic parameters
Statistic Un-weighted mean Weighted mean
Pair-wise FST 72 0.19 (0.052) 0.52 (0.0003)
Pair-wise FST 47d 0.17 (0.067) 0.44 (0.0014)
Pair-wise FST 25r 0.06 (0.30) 0.41 (0.0022)
FST to farm 72 0.13 (0.11) 0.22 (0.039)
FST to farm 47d 0.25 (0.024) 0.37 (0.0045)
FST to farm 25r <0.01 (0.72) <0.01 (0.99)
ABC introgression 0.16 (0.08) 0.47 (0.0007)
Fixed migration rate introgression 0.25 (0.025 0.36 (0.005)

Values computed are R2 (P-value). Number behind statistics refers to number of SNP loci used, introgession computations only compared for 47d.

Pair-wise FST = observed value between historical and contemporary sample for each river; FST to farm = absolute difference in pair-wise FST between the populations historical sample and the farm sample, and between the populations contemporary sample and the farm sample, ABC introgression = estimated introgression of farmed salmon (Table 3) using ABC method, Fixed migration rate introgression = estimated introgression of farmed salmon (Table 3) using the fixed migration rate method. Un-weighted mean = mean% of farmed salmon observed on the spawning grounds for these rivers in the period 1989–2009 [5,52], weighted mean = weighted average percentage of farmed salmon in the population combining data from both sports-fishing and spawning population samples [53].

Glover et al.

Glover et al. BMC Genetics 2013 14:74   doi:10.1186/1471-2156-14-74

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