Table 1.

Analysis of directional selection of M. melolontha on latex secondary metabolites. Relative fitness was analysed as a function of latex secondary metabolites in the absence and the presence of M. melolontha. Significant interaction terms indicate that M. melolontha exerts selection on the metabolite.

	estimate	s.e.	p-value
herbivory	−1.1	0.72	0.14
TA-G	−0.024	0.008	0.003**
total PIEs	0.0046	0.006	0.44
total TritAc	9.2−5	0.006	0.99
herbivory : TA-G	0.034	0.01	0.001**
herbivory : total PIEs	−0.002	0.009	0.83
herbivory : total TritAc	−0.004	0.01	0.69