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Can honey bees discriminate between floral fragrance isomers?

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Figure

Fig. 1. Isomers used as conditioning stimuli.Each box encloses a pair of isomers, which wereused in our experiments
Fig. 2. Experiment 1: absolute conditioning. The left panels show the pooled acquisition curves for the two subgroups of each isomer pair (eachstructural isomers, generalization to the NI was very high, thus showing that bees perceived isomers of a pair as
Fig. 3. Experiment 2: differential conditioning. The left panels show the pooled acquisition curves for the two subgroups of each isomer pair trainedstereoisomers,of the mean (s.e.m.)
Fig. 4. Experiment 3: the effect of quinine and saline solutions on discrimination learning

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