Recruitment pheromone in the harvester ant genus Pogonomyrmex.

@article{Hoelldobler2001RecruitmentPI,
  title={Recruitment pheromone in the harvester ant genus Pogonomyrmex.},
  author={Bert Hoelldobler and E. D. David Morgan and Neil J Oldham and Juergen Liebig},
  journal={Journal of insect physiology},
  year={2001},
  volume={47 4-5},
  pages={369-74}
}
Workers of the harvester ant genus Pogonomyrmex employ recruitment trail pheromones discharged from the poison gland. In P. barbatus, P. maricopa, P. occidentalis and P. rugosus we identified three pyrazines [2,5-dimethylpyrazine, trimethylpyrazine and 3-ethyl-2,5-dimethylpyrazine (EDMP)] as major compounds of the volatile part of the poison-gland secretions. Laboratory and field tests revealed EDMP to be the main recruitment pheromone. 
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