From the greek “to bear”

secreted or excreted chemical factor that triggers a social response in members of the same species.

capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual

Types of pheromones:

  1. aggregation – pheromones released by certain animals or insects that function in defense against predators, mate selection, and overcoming host resistance by mass attack.
  2. alarm – pheromones released by certain species as volatile substances during attack or aggression
  3. signal – pheromones triggering short-term change in neurotransmitter release
  4. primer – pheromones trigger a change in developmental stage of an animal or insect
  5. trail – pheromones used to mark a path, common in social insects such as ants (see picture above)
  6. information – pheromones indicative an animal’s identity or territory.
  7. sex – pheromones used in attraction of a mate

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