Abstract
An emerging invader, the red-necked longicorn beetle Aromia bungii (Faldermann) (Coleoptera: Cerambycidae), has become a major pest of cherry blossom, peach, prune, and Japanese apricot in Japan. The synthetic aggregation-sex pheromone, (E)-2-cis-6,7-epoxynonenal, has been used as a chemical for their monitoring. The longevity of the current lure is, however, only one week. Unlike most Lepidopteran lures, it needs to be emitted in large amount of the pheromone emission for effective attraction. In this study, we surveyed chemical retention materials to determine which improving its longevity. The weights of 7 types of lures were measured for 2 or 3 weeks to determine the weight-loss. The pheromone emission from each lure tended to be correlated to the weight-loss. We analyzed the pheromone emissions from candidate lures for three weeks and compared them to the current lures. The current lure continued pheromone emission for 7 d, whereas the candidate lure continued for 14 d. In field trials, the candidate and current lures were both significantly attractive during the first week compared to the control. However, the candidate lure attracted the beetle to the same extent for over 14 d; its longevity was double that of the current lure, therefore, it could be useful for extended monitoring of this beetle.





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Acknowledgements
We thank S. Yaita and M. Komaba of the Tochigi Prefectural Agricultural Experiment Station, K. Mishiro and N. Uechi of Institute of Fruit Tree and Tea Science, NARO for their help with the setting of the field-traps. We also thank T. Yasuda of Institute of Agrobiological Sciences, NARO for helpful discussion.
Funding
HY, NF-T thank JSPS KAKENHI (#17K07686) for financial support of this work. This research was also partially supported by grants from the Project of the NARO Bio-oriented Technology Research Advancement Institution (Research program on development of innovative technology).
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Yasui, H., Fujiwara-Tsujii, N., Kugimiya, S. et al. Extension of sustained pheromone release for monitoring an emerging invader, red-necked longicorn beetle Aromia bungii (Coleoptera: Cerambycidae). Appl Entomol Zool 56, 291–297 (2021). https://doi.org/10.1007/s13355-021-00726-w
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DOI: https://doi.org/10.1007/s13355-021-00726-w