| Title: | "Revisiting the sex pheromone of the fall armyworm Spodoptera frugiperda, a new invasive pest in South China" |
| Author(s): | Jiang NJ; Mo BT; Guo H; Yang J; Tang R; Wang CZ; |
| Address: | "State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China" |
| ISSN/ISBN: | 1744-7917 (Electronic) 1672-9609 (Linking) |
| Abstract: | "The fall armyworm Spodoptera frugiperda is a worldwide serious agricultural pest, and recently invaded South China. Sex pheromone can be employed to monitor its population dynamics accurately in the field. However, the pheromone components previously reported by testing different geographic populations and strains are not consistent. On the basis of confirming that the S. frugiperda population from Yunnan Province belonged to the corn strain, we analyzed the potential sex pheromone components in the pheromone gland extracts of females using gas chromatography coupled with electroantennographic detection (GC-EAD), gas chromatography coupled with mass spectrometry (GC-MS) and electroantennography (EAG). The results show that (Z)-9-tetradecenal acetate (Z9-14:Ac), (Z)-11-hexadecenyl acetate (Z11-16:Ac), (Z)-7-dodecenyl acetate (Z7-12:Ac) or (E)-7-dodecenyl acetate (E7-12:Ac) with a ratio of 100 : 15.8 : 3.9 induced EAD responses to varying degrees: Z9-14:Ac elicited a strong EAD response, Z7-12:Ac or E7-12:Ac elicited a small but clear EAD response, while Z11-16:Ac elicited a weak EAD response. Further single sensillum recording (SSR) showed that Z9-14:Ac and Z7-12:Ac induced dose-dependent activities in two types (A and B) of sensilla in male antennae, respectively, while the sensilla in response to E7-12:Ac and Z11-16:Ac was not recorded. Finally, wind tunnel tests reveal that Z9-14:Ac and Z7-12:Ac are two principal sex pheromone components of the tested population" |
| Keywords: | Animals China Female Introduced Species Male *Moths/physiology Pheromones/pharmacology *Sex Attractants/chemistry/pharmacology Spodoptera Gc-ead Gc-ms sex pheromone single sensillum recording wind tunnel; |
| Notes: | "MedlineJiang, Nan-Ji Mo, Bao-Tong Guo, Hao Yang, Jun Tang, Rui Wang, Chen-Zhu eng Australia 2021/07/24 Insect Sci. 2022 Jun; 29(3):865-878. doi: 10.1111/1744-7917.12956. Epub 2021 Oct 15" |
