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Fig. 1 | BMC Ecology

Fig. 1

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

Fig. 1

Influence of fish sex on gammarid predation depending on absence or presence of substratum. Index of stomach fullness (ISF) confirms a generally higher predation rate in absence of substratum. No differences between female (white) and male (grey) N. melanostomus were observed. [Asterisks indicate significant differences at p < 0.05 (*), p < 0.01 (**), p < 0.001 (***)]. Boxplots represent 25 to 75 % (boxes ) and 5 to 95 % percentiles (whiskers). Circles represent outliers (exceeding 1.5 interquartile range). n = 14: female/substratum absent; n = 8: male/substratum absent; n = 12: female/substratum present; n = 10: male/substratum present)

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