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Divergence in trait space caused by the genetic diversity of P. fluorescens or predator evolutionary history (ellipses depict 95% confidence levels). Growth is the biomass yield in the absence of predation and defence is the effect of predation (0 = predation has no effect) on the biomass yield (both in optical density area units). (a–c) P. fluorescens and (d–f) E. coli clones isolated from the endpoint of a microcosm experiment.
