Figure 4: Floral compounds compete with IAA to an extent directly proportional to their appetitive value.
From: Appetitive floral odours prevent aggression in honeybees
(a) Bees participating in the colony defence or naive bees raised in an incubator exhibit spontaneous proboscis extension responses to some floral compounds, in particular to PhE and Lol. McNemar tests, Bonferroni-corrected threshold α=0.01; NS, not significant; P>α, #PhE P=0.020, #Lav P=0.013, *P<α, n=101 naive bees and n=110 aggressive bees. The responses of naive and aggressive bees are correlated. Pearson’s r test, r=0.83; P=0.043. (b) The appetitive value of each floral compound correlates with the extent to which it affected the response to IAA during the aggression assays. Pearson’s r tests, aggressive bees: r=−0.99, P<0.001; naive bees: r=−0.86, P=0.027.
