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Research article - Peer-reviewed, 2021

The effect of 1-pentadecene on Tribolium castaneum behaviour: Repellent or attractant?

Dukic, Nikola; Andric, Goran; Glinwood, Robert; Ninkovic, Velemir; Andjelkovic, Boban; Radonjic, Andja


BACKGROUND Movement of the red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), in stored products is mediated by food volatiles and other semiochemicals.RESULTS In two-way olfactometer assays, T. castaneum was more attracted to wheat bran previously infested with conspecifics than to uninfested bran. Chemical analysis showed that 1-pentadecene was present in the headspace of T. castaneum-infested wheat bran, but not detectable in the headspace of uninfested bran. An olfactometer was used to test the effect on T. castaneum behaviour of 1-pentadecene, and of volatiles from wheat bran with and without 1-pentadecene. The lowest concentration of 1-pentadecene exhibited an attractive effect, compared to the control (n-hexane). Slightly higher concentrations showed a neutral effect, while the highest concentrations repelled T. castaneum. Wheat bran with a low 1-pentadecene concentration was more attractive than wheat bran alone, whereas higher concentrations of 1-pentadecene were repellent.CONCLUSION The results provide important information on intraspecific, semiochemical-mediated behaviour in T. castaneum, which could potentially be used to develop new methods to monitor the flour beetles in stored products. (c) 2021 Society of Chemical Industry.


Tribolium castaneum; food volatiles; semiochemicals; 1‐pentadecene; olfactometer; wheat bran

Published in

Pest Management Science
2021, Volume: 77, number: 9, pages: 4034-4039