Behavioral responses of Araecerus fasciculatus (Coleoptera: Anthribidae) to volatiles of selected stored Chinese medicinal plant products.

Autor: Zeng, Guang, Xie, Songhai, Jian, Lingyan, Agrafioti, Paraskevi, Wu, Kaixian, Athanassiou, Christos G, Cao, Yu
Zdroj: Journal of Economic Entomology; Dec2024, Vol. 117 Issue 6, p2669-2677, 9p
Abstrakt: The olfactory responses of Araecerus fasciculatus Degeer to the volatiles of 5 traditional Chinese medicine plant products (CMPPs; i.e. Codonopsis pilosula Franch. Ophiopogon japonicus Linn. f. Astragalus membranaceus Fisch. Dendrobium nobile Lindl. and Angelica dahurica Fisch.) were studied using Y-tube, 4-arm, and 6-arm olfactometers. The volatile components of these CMPPs were analyzed using gas chromatography–mass spectrometry (GC–MS). A. fasciculatus significantly preferred the CMPPs volatiles in the order of O. japonicus  >  C. pilosula  >  A. membranaceus  ≥  D. nobile = A. dahuri ca. In the volatile profiles of O. japonicus , C. pilosula , A. membranaceus , D. nobile , and A. dahurica , GC–MS identified 27, 61, 63, 52, and 71 components, respectively, and β -elemene (30.58%), hexanal (12.69%), selina-3,7(11)-diene (12.31%), d-limonene (18.59%), and α -curcumene (8.88%) were the most abundant volatile components. A. fasciculatus were attracted to β -elemene, α -selinene, and β -selinene (main components of the volatile profiles of the most preferred CMPPs of O. japonicus) at different concentrations, with 1, 50, and 25 µg/µl being the most attractive, respectively. The olfactory preferences of A. fasciculatus were β -elemene > α -selinene = β -selinene based on the 4-arm olfactometer bioassays for comparisons at their most attractive concentrations. Therefore, differences in the volatile profiles among CMPPs significantly influenced the olfactory responses of A. fasciculatus , offering insight into the mechanisms of host preferences in stored-product pests based on chemical ecology. β -elemene showed the greatest potential to be developed as an attractant for the monitoring and control of this pest. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index