Fig. 2.

Mean relative consumption (± SE) of grey field slugs in independent preference assays on Solanum dulcamara leaf discs. Large panels show results of eight population screenings testing within-population preference (assay 1 in Fig. 1, n = 16). Insets show results of eight within population dual-choice assays using clones of most-preferred and least preferred accessions from each population (assay 2 in Fig. 1, n = 8). Test statistics are provided in Table 1. The boxes surrounding accession names indicate the accessions used in assay 2. Dashed lines indicate damage distribution when slugs would have equally preferred all accessions tested