Table 2. Activity of the surface-feeding flagellate R. nasuta in response to biofilm supernatants of V. cholerae A1552
% of active flagellates
Strain Rugose variant Smooth variant
Wild-type 18.5 ± 3.2 23.6 ± 4.4
hapR 89.3 ± 11.1 84.4 ± 5.3
  • All values are means ± SD (n = 4) derived from microscopical inspection after 2 days. Statistical analyses were performed by using arcsine square root-transformed data.