Figure 2
From: Evolution by flight and fight: diverse mechanisms of adaptation by actively motile microbes
Swarming rates of evolved populations. Swarming rates of ancestors (gray) and each evolved population in its respective evolutionary environment, either hard agar (a) or soft agar (b). Evolved populations with a swarming rate that differed significantly from their respective ancestors are represented in red (P<0.05), whereas populations with non-significant changes are in black. Swarming rates and P-values for each population can be found in Supplementary Table S3. Error bars represent 95% confidence intervals (also for all other graphs unless indicated otherwise). (c) Average evolutionary change in swarming rates for each of the six treatments, expressed as a percentage increase relative to ancestor strains. *P<0.05; **P<0.01; ***P<0.001, asterisks indicate significant effect of evolutionary treatment on swarming rate as calculated by one-sample t-tests for differences from 0.
