Table 4.

Summary of Pearson correlations between pyrrolizidine alkaloid (PA) concentrations and the proxies of herbivore feeding^a in the five bioassays conducted with Jacobaea F2 hybrids from a cross between Jacobaea vulgaris and Jacobaea aquatica

PA	Specialist herbivores		Generalist herbivores
	Flea beetle (N = 87)	Cinnabar moth (N = 35)	Slug (N = 84)	Thrips (N = 94)	Leafminer (N = 90)
Total tertiary amines	0.079	0.391*	−0.206	−0.266**	−0.235*
Total N-oxide	0.042	0.043	−0.283**	−0.282**	−0.060
Senecionine-like PAs	0.030	−0.042	−0.259*	−0.204*	−0.091
Jacobine-like PAs	0.017	0.350*	−0.167	−0.297*	−0.188
Erucifoline-like PAs	−0.004	−0.078	−0.115	−0.159	0.226*
Otosenine-like PAs	0.088	0.303	0.173	0.030	−0.267*

*P < 0.05, **P < 0.01

^aThe feeding damage data used is the same as that in Table 3