FIG. 4.

Photomicrographs of Flectobacillus sp. strain MWH38 populations grown in chemostats with and without predation and at different growth rates. (A and B) Flectobacillus sp. strain MWH38 from the predation experiment before (A) and after (B) inoculation with the flagellate. Before the start of predation, the bacteria were cultured at a growth rate of 0.5 day⁻¹. (C and D) Flectobacillus sp. strain MWH38 from the growth rate chemostat experiment at growth rates of 0.5 day⁻¹ (C) and 2.0 day⁻¹ (D). Flagellates were not included in this experiment.