Figure 3.
Effect of exposure to different mixtures (all n = 5) of zinc (Zn; 30 µg‧L−1), methomyl (MT; 80 µg‧L−1), and perfluorooctanoic acid (PFOA; 200 µg‧L−1) on mean (± SE) observed (colored bars) and expected (black bars) gammarid feeding rate. **p < 0.01; ns: nonsignificant.