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Fig. 2. The mean proportions of insects in Experiment 2 that selected tobacco
flowers augmented with
-pinene in each treatment group. Moths had been
conditioned on flowers augmented with either
-pinene (pinene),
phenylacetaldehyde (aldehyde) or no extra volatiles. Corresponding proportions
of insects selecting flowers augmented with phenylacetaldehyde are 1-mean
proportions shown for each treatment. Common letters above bars denote
significance of differences between treatments (G-test, GLIM): a,
P<0.001; b, P<0.005. Values are means ±
S.E.M.