Figure 2: Experiments to identify the competition avoidance cue.
From: A nonspecific defensive compound evolves into a competition avoidance cue and a female sex pheromone
Frequency of decision for sample or control of mated L. heterotoma females in a y-tube experiment when choosing between the odour of (a) a host patch and clean air, (b) an unexploited host patch and the odour of a host patch with 10 living L. heterotoma females, (c) an unexploited host patch and the odour of a host patch with 10 living L. boulardi females, (d) an unexploited host patch and a host patch with extract of L. heterotoma females, (e) extract of L. heterotoma females and clean air, (f) an unexploited host patch and a host patch with the CHCs of L. heterotoma females, (g) an unexploited host patch and a host patch with the iridoids of L. heterotoma females, (h) an unexploited host patch and a host patch with synthetic (−)-iridomyrmecin and (i) an unexploited host patch and a host patch with synthetic (+)-isoiridomyrmecin. Bar colours indicate sample (blue) and control (clean air or unexploited host patch, brown). P-values (rounded to the third decimal) are given for the two-sided binomial test. For each experiment n=30.
