2.4. Methods of analysis of healthy and non-healthy fish
Genetic differences between healthy and infected fish were
analysed.
Firstly, samples G1 and G2 were pooled and then divided
into 2 groups.
From infected fish (25% of the total number of individuals),
15 fish with symptoms of diseases other than skin infections
were excluded from the analysis.
Selected, infected individuals accounted for 42% of analysed fish (19.8% of all collected individuals
G1 and G2).
Finally, 40 healthy fish and 29 infected individuals
were used for AMOVA and structure analysis using Structure v. 2.0