Figure 1.
(a,c,e,g) Swimming performance in bass and (b,d,f,h) mosquitofish. There were interactions between acclimation treatment and test temperatures for sustained swimming performance (Ucrit) in (a) bass and (b) mosquitofish, as well as for burst swimming in (c) bass and (d) mosquitofish. Similarly, there was an interaction between acclimation treatment and test temperature in attack speeds of (e) bass, but escape speeds of (f) mosquitofish did not change significantly with acclimation treatment or test temperature. Interestingly, attack speeds of bass were significantly lower than burst speeds measured in the swimming arena, but escape speeds of mosquitofish were significantly higher than burst speeds. Absolute escape speeds of (h) mosquitofish were significantly higher than attack speeds of (g) bass at 25°C and 30°C. Black bars represent cold-acclimated fish and white bars represent warm-acclimated fish. Means and s.e. are shown, and results of statistical analyses are indicated in each panel.