Fig. 3.

Mean relative consumption (± SE) of grey field slugs on leaf discs of 15 Solanum dulcamara accessions characterized by contrasting feeding preference in within population comparisons (assays 1 and 2 in Fig. 1) when offered simultaneously (assay 3 in Fig. 1). Friedman test for overall preference: n = 16, df = 14, χ² = 109.09, P ≤ 0.001. Codes of S. dulcamara accessions as in Fig. 2. Dashed line indicates damage distribution when slugs would have equally preferred all accessions tested