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Fig. 2. Orientation of worker bees in the wind tunnel according to the odorous
stimulation: nestmates' odour, linalool and no odour (control group). (A) Mean
duration ± S.D. of the total flight and of the flight around
the odour source. (B) Percentages of bees exhibiting orientated flights
(upwind zigzag flight) and circling behaviour. Asterisks indicate significant
differences: P<0.05; NS, not significant.