Ant Eavesdropping Leads to Arms Race between Predator and Prey
Researchers from Kunming Institute of Zoology and Xishuangbanna Tropical Botanical Garden (XTBG) of the Chinese Academy of Sciences conducted a study to seek the effects of ant eavesdropping on the variational trail pheromone of its termite prey.
During the observation of foraging termites, the workers quickly located and covered a new suitable piece of wood with mud-sheets in order to protect themselves during foraging.
Ants showed significantly higher attraction to vials with living termites (workers and soldiers) compared with control vials. The most commonly predated termite, O. yunnanensis, was able to regulate the trail pheromone component ratios during its foraging activity.
Chemical analyses showed two specific compounds at the surface of the sternal gland of workers in O. yunnanensis, (3Z)-dodec-3-en-1-ol (DOE) whereas (3Z,6Z)-dodeca-3,6-dien-1-ol (DDE).
Their lab experiments clearly showed that ants were attracted to all samples containing DOE and DDE at all studied quantities.
The ants used the trail pheromone information as an indication of suitable prey abundance, and regulated their behavioral responses based on the changing trail pheromone component.
The eavesdropping behavior in ants therefore led to an arms race between predator and prey where the species specific production of trail pheromones in termites is targeted by predatory ant species.
Contacts and sources:
Citation: “Breaking the cipher: ant eavesdropping on the variational trail pheromone of its termite prey” has been published in Proceedings of the Royal Society B.
Source: http://www.ineffableisland.com/2017/05/ant-eavesdropping-leads-to-arms-race.html
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