Figure 3.

The food-leaving response is not seen in larvae nor in sterile worms. (A) The proportion of worms off food were scored as described for Fig. 1B except that in these assays both adult worms and larvae were scored in parallel. n = 4 bacterial lawns. Data are mean ± s.e.mean. One way ANOVA with Bonferroni multiple comparisons. (B,C) C. elegans were pre-treated with 0.1 mg/ml FUdR to induce sterilisation. These worms lay eggs that do not hatch. They were subjected to the food-leaving assay as described in Fig. 1. Control worms were treated in an identical manner except for the omission of FUdR. Food-leaving and the proportion of worms off food was scored as described in Fig. 1. Data are mean ± s.e.mean; n = 5 lawns for both treatment groups. Two way ANOVA with Bonferroni multiple comparisons. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001.