Figure 7 | Scientific Reports

Figure 7

From: Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers

Figure 7

Canonical discriminant analysis based on otolith element:Ca ratios of age-0 Pacific bluefin tuna collected from the East China Sea (ECS = blue) and Sea of Japan (SOJ = grey). 95% confidence ellipse (solid line) around each centroid denoted with + symbol and normal 50% ellipse (dashed line) shown. Since classification variable has only two levels, points are plotted against the single canonical variable (Canonical 1) and canonical weights for each covariate relate to this variable only. Biplot vectors from each centroid indicate the influence of each element:Ca ratio (Li:Ca, Mg:Ca,m Mg:Ca, Zn:Ca, Sr:Ca, Ba:Ca) on regional discrimination. Rays shown with a vertical component only for improved separation but all are relative to Canonical 1 axis.

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