Fig 1.

Temperature influences swimming and swarming behavior. (A) Average rates of swim ring formation for Serratia sp. SCBI (SCBI) and S. marcescens Db11 (Db11) at 22, 28, and 37°C. Results are shown as the averages of 6 measurements from 2 independent experiments, with the standard deviations indicated by error bars. (B) Swarm ring diameter measurements (expressed in millimeters) at 48 h. The maximum measurement was 88 mm (the width of the petri dish). Results are shown as the averages of 9 measurements ± standard deviations from 3 independent experiments (3 measurements each). ** (P < 0.01) and * (P < 0.001) denote significant differences from Serratia sp. SCBI at the same temperature.