The Trail-Following Communication in Stylotermes faveolus and S. halumicus (Blattodea, Isoptera, Stylotermitidae)

Stylotermitidae appear peculiar among all termites, feeding in trunks of living trees in South Asia only. The difficulty to collect them limits the ability to study them, and they thus still belong to critically unknown groups in respect to their biology. We used a combination of microscopic observa...

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Published in:Journal of chemical ecology 2023-12, Vol.49 (11-12), p.642-651
Main Authors: Thakur, Himanshu, Agarwal, Surbhi, Hradecký, Jaromír, Sharma, Garima, Li, Hou-Feng, Yang, Shang-En, Sehadová, Hana, Chandel, Ravinder S., Hyliš, Mirek, Mathur, Vartika, Šobotník, Jan, Sillam-Dussès, David
Format: Article
Language:English
Subjects:
Agriculture
Animal Communication
Animals
Biochemistry
Biological Microscopy
Biomedical and Life Sciences
Cockroaches
Ecology
Entomology
Gas Chromatography-Mass Spectrometry
Life Sciences
Pheromones - chemistry
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Summary:Stylotermitidae appear peculiar among all termites, feeding in trunks of living trees in South Asia only. The difficulty to collect them limits the ability to study them, and they thus still belong to critically unknown groups in respect to their biology. We used a combination of microscopic observations, chemical analysis and behavioural tests, to determine the source and chemical nature of the trail-following pheromone of Stylotermes faveolus from India and S. halumicus from Taiwan. The sternal gland located at the 5th abdominal segment was the exclusive source of the trail-following pheromone in both S. faveolus and S. halumicus , and it is made up of class I, II and III secretory cells. Using gas chromatography coupled mass spectrometry, ( 3Z )-dodec-3-en-1-ol (DOE) was identified as the trail-following pheromone which elicits strong behavioural responses in workers at a threshold around 10 − 4 ng/cm and 0.1 ng/gland. Our results confirm the switch from complex aldehyde trail-following pheromones occurring in the basal groups to simpler linear alcohols in the ancestor of Kalotermitidae and Neoisoptera.
ISSN:0098-0331
1573-1561
DOI:10.1007/s10886-023-01447-w