FIG. 6.
(A through C) Survival of Campylobacter jejuni NCTC 11351, C. coli NCTC 11366, and C. jejuni subsp. jejuni (poultry isolate) when cocultured with A. castellanii (CCAP 1501/10) and T. pyriformis (CCAP 1630/14A). Cocultures (1:1 ratio of Campylobacter to protozoa) and planktonic strains of Campylobacter were prepared in PAS solution and incubated at 25°C for up to 10 days, when viable Campylobacter were no longer obtained. The results are presented as average (performed in quadruplicate) viable Campylobacter recovered per ml from PAS, and error bars indicate the standard deviations. (A) Viablecounts of recovered Campylobacter during the first 24 h of incubation from cocultures with A. castellanii and T. pyriformis. (B) Viable counts of recovered Campylobacter during 10 days of incubation from cocultures containing T. pyriformis. (C) Viable counts of recovered Campylobacter during 10 days of incubation from cocultures containing A. castellanii.