Bumblebees are fascinating creatures that play a crucial role in pollinating many crops and wild plants. But how do these insects recognize each other within their complex social structures? And what happens when an intruder tries to take over a colony?

How do bumblebees recognize each other?

Bumblebees use a combination of chemical, visual, and behavioral signals to identify and communicate with each other.

  • Pheromones : The primary way that bumblebees recognize each other is via chemical signals, specifically pheromones. These substances are produced by bumblebee glands and carry specific information. For example, the queen produces a unique pheromone that helps workers recognize her and know that they are part of the same colony.
  • Nest scent : Each bumblebee colony develops a unique nest scent, a mix of pheromones from the queen, the workers and the scent of the nesting materials. Workers use this scent to distinguish their littermates from intruders. This nest smell is so specific that it is almost impossible for bumblebees from different colonies to live together.
  • Visual cues : Although less important than chemical signals, bumblebees can also use visual features to recognize each other. This may include the color patterns and markings on the bodies of other bumblebees.
  • Behavioral patterns : Bumblebees from the same colony often show specific behaviors that are unique to their colony. Workers can use behavior as an additional way to identify littermates.

Image of Jurgen via Pixabay

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