Fig. 3

Fold change values discriminating male and female frass components in the interaction betweem Mentha aquatica and Chrysolina herbacea. Blue bars and boldfaced compounds refer to male extracts. Fold changes are expressed as Male value /Female value. In order to express negative values, data are expressed as −1/(A/B) when the A/B value is <1, where A and B indicate, respectively, Male value and Female value. Error bars represent standard deviations. Compounds that are also indicated in fig. 7 are circled in orange