TABLE 2.

Size and motility characteristics of the bacterial strains used in video microscopy experimentsa

Bacterial strainCell length (μm)Cell vol (μm3)Mean speed (μm s−1)Max speed (μm s−1)
KB91.24 ± 0.290.26 ± 0.030.6 ± 0.10.8 ± 0.2
MM11.23 ± 0.200.24 ± 0.036.7 ± 1.340.5 ± 8.6
KB61.27 ± 0.250.25 ± 0.0517.1 ± 4.272.2 ± 24.2
KB231.28 ± 0.270.26 ± 0.0428.7 ± 5.482.7 ± 35.9
SG81R11.23 ± 0.270.24 ± 0.0543.9 ± 3.4144.9 ± 44.4
CP-21.25 ± 0.240.24 ± 0.0159.3 ± 4.6160.9 ± 36.0
  • a Bacteria were taken from chemostat cultures grown to steady state at a dilution rate of D = 0.02 h−1. The data (presented as means ± standard deviations) are based on 12 subsamples.