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Table 2 Relative comparison of amphipod losses found after 3 h under experimental conditions without N. melanostomus presence

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

  Trial Substratum Mortality [%] mean (± SD) N
G. pulex D. villosus
A Single Presence 1.8 (±3.0) 1.2 (±2.5) 17
Mixed Presence 1.3 (±2.7) 1.3 (±3.2) 24
Single Absence 0.9 (±2.0) 1.0 (±2.2) 17
Mixed Absence 0.3 (±1.3) 0.0 (±0.0) 29
B Single Presence 1.8 (±3.0) 1.7 (±2.1) 6
Mixed Presence 0.7 (±1.8) 0.7 (±1.8) 16
Single Absence 0.9 (±2.0) 1.3 (±1.4) 6
Mixed Absence 2.5 (±4.1) 1.9 (±3.1) 15
  1. A G. pulex and D. villosus with the same size class, B D. villosus larger than G. pulex. Single only one species per aquarium, Mixed both species in aquarium