Means and significance levels (p-value) obtained from statistical analysis of the effect of sources of variation on aggressive behavior in bees inside the hive.

Means and significance levels (p-value) obtained from statistical analysis of the effect of sources of variation on aggressive behavior in bees inside the hive. Feeding groups were defined by abbreviations (MSP: Mixed Spring Pollen, HS: Honey Syrup, SS: Sugar Syrup, Control: Control). a, b, c: The difference between the group means indicated with different letters within each feeding group is significant (p<0.05).