How does queen substance affect worker honeybees in a colony?

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In a honeybee colony, queen substance is a vital pheromone secreted by the queen’s mandibular glands that acts as a chemical messenger to maintain social order. It affects worker honeybees in several key ways:123

  • Physiological Inhibition: The substance is consumed by workers and distributed throughout the colony via food sharing. Its presence disrupts the development of the workers' ovaries, effectively preventing them from reproducing.2341
  • Behavioral Regulation: The pheromone modifies worker behavior by inhibiting the construction of new queen cells. As long as the substance is present, it signals that the queen is healthy, suppressing the workers' urge to rear a replacement.132
  • Colony Stability: If the queen is lost or her production of the substance declines, the workers detect the absence of this chemical signal. This triggers an immediate behavioral shift, leading them to build queen cells and feed young larvae with royal jelly to produce a new queen.23