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Presents two hypothetical functions of the vibration signal during swarming in honey bees. Impact on the recruitment to the specific sites advertised by the waggle dancers which also perform the vibration signal; Role as a nonspecific modulatory signal to stimulate activity in other bees; Distance difference between sites whose scouts did and did not vibrate other bees.

Describes experiments showing strong discrimination by honeybee (`Apis mellifera') workers against worker-laid male eggs that support the worker-policing hypothesis. Methods; Results; Discussion.