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Fig. 4 | BMC Ecology

Fig. 4

From: Synergistic impacts by an invasive amphipod and an invasive fish explain native gammarid extinction

Fig. 4

Prey selectivity of N. melanostomus. Mean values ± SE of electivity index are presented. Positive values represent preferred prey species in presence (open circles and squares) or absence (black circles and squares) of substratum. Dashed line indicates no selectivity. a Same size class of G. pulex and D. villosus. b Larger size class of D. villosus. Asterisks indicate significant differences to zero at p < 0.05 (repeated measures ANOVA): (*), p < 0.01 (**), p < 0.001 (***)

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