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Identification and potential application of a putative allomone component in the defensive secretion of a destructive invasive species: the red-necked longhorn beetle, Aromia bungii

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Abstract

The red-necked longhorn beetle, Aromia bungii, is an invasive wood-boring insect that has recently invaded Europe and Japan, seriously damaging stone fruit trees in both native and invaded regions. Rose oxide, including both cis- and trans-isomers, was previously found in the volatiles produced by A. bungii adults, while the inter- and intra-specific behavioral functions of this compound remain unclear. By manually shaking the beetles, a much greater amount of rose oxide was released from the beetles, compared to that released from nondisturbed beetles. Rose oxide was further determined to be original from a white-colored secretion which was immediately sprayed by the beetles that were hand captured or squeezed by tweezers. These findings indicate that this pungent compound putatively has a role as an allomone component released from the defensive secretion by A. bungii adults when threatened, which may be an adaptive defensive strategy against the predation of natural enemies such as insectivorous birds. Y-tube olfactory assays revealed that rose oxide, at a high concentration, was significantly repellent to both sexes of A. bungii adults, suggesting that rose oxide may also have a function in the intraspecific communication of A. bungii. Considering the low price of the commercially available products, this repellent effect of rose oxide may facilitate the development of novel control strategies, such as push–pull strategy, for A. bungii.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

We thank Yujie Qing, Hongqi Dou and Leyu Wang for collecting beetles in the field. We thank Nuo Zhang and Yaya Li in chemical analysis. This work was supported by the National Natural Science Foundation of China (No. 32001322), the Natural Science Foundation for Colleges and Universities in Jiangsu Province (No. 20KJB220004), the Science Foundation of Jiangsu Vocational College of Agriculture and Forestry (Nos. 2020kj002 and 2021kj90).

Funding

This work was supported by the National Science Foundation of China (No. 32001322), the Natural Science Foundation for Colleges and Universities in Jiangsu Province (No. 20KJB220004), the Science Foundation of Jiangsu Vocational College of Agriculture and Forestry (Nos. 2020kj002 and 2021kj90).

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Correspondence to Tian Xu or Dejun Hao.

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Communicated by Jian Duan.

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Chen, R., Chen, C., Zhao, X. et al. Identification and potential application of a putative allomone component in the defensive secretion of a destructive invasive species: the red-necked longhorn beetle, Aromia bungii. J Pest Sci 97, 993–1004 (2024). https://doi.org/10.1007/s10340-023-01649-x

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  • DOI: https://doi.org/10.1007/s10340-023-01649-x

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