Fig. 6From: Fatty acid composition of sprat (Sprattus sprattus) and herring (Clupea harengus) in the Baltic Sea as potential prey for salmon (Salmo salar)Biplots from the PCA of concentrations of fatty acids with principal components 1 and 2 and following paired SIMCA test results for a sprat and b herring caught from the Baltic Proper, Bothnian Sea and Gulf of Finland in autumn and spring. Each symbol refers to a pool (whole body homogenate), which for sprat consisted of 12–92 specimens and for herring 7–133 specimensBack to article page