Antennal and behavioral responses of female Maruca vitrata to the floral volatiles of Vigna unguiculata and Lablab purpureus

• DOI: 10.1111/eea.12216
• Publication Date: 2014-07-16T12:35:17Z
• Authors: Pan Wang; Na Zhang; Li‐Lin Zhou; Sheng‐Yun Si; Chao‐Liang Lei; Hui Ai; Xiao‐Ping Wang
• Keywords: Electroantennography; Olfactometer; Decanal; Nonanal

Abstract In many herbivorous insects, the attraction to suitable host plants is in part mediated by similar olfactory cues from different plants. This study investigated electrophysiological and behavioral responses of female M aruca vitrata F abricius ( L epidoptera: C rambidae) floral volatiles two plants, V igna unguiculata .) W alpers ablab purpureus S weet (both abaceae). Qualitative quantitative differences were found between odor profiles gas chromatography‐mass spectrometry GC ‐ MS ). Nine electroantennography‐active compounds detected headspace collections means coupled ‐electroantennographic detection. a wind tunnel, behaviors (upwind flight source approach) not affected stimuli or their interaction with but influenced A mixture nine bioactive compounds, including limonene, 1,3‐diethylbenzene, benzaldehyde, acetophenone, 4‐ethylbenzaldehyde, 1‐(4‐ethylphenyl)‐ethanone, 2‐methyl‐3‐phenylpropanal, 1H‐indol‐4‐ol, 1,1′‐(1,4‐phenylene)bis‐ethanone mimicking . (in ratio 0.4:9.7:2.4:5.7:78.1:4.8:100:0.6:30.3) attracted significantly more females approaching sources compared 0.3:1.4:1.6:3.7:50.8:3.2:100:4.2:16.7). Further bioassays revealed that subtractive 4‐component blend [limonene, 1‐(4‐ethylphenyl)‐ethanone 0.4:9.7:78.1:4.8] was essential for maximal attraction. Our suggested might use odors locate hosts an artificial lure, containing major released be useful exploring efficiency monitoring and/or control strategies this moth field.