Behavioral and Electrophysiological Responses to Caffeine of Helicoverpa armigera Larvae and H. assulta Larvae  

作　　者：Dongsheng ZHOU Jimei LONG Jianhui LIU Tao TENG 

机构地区：[1]College of Life Sciences and Environment,Hengyang Normal University

出　　处：《Agricultural Biotechnology》2018年第5期127-129,共3页农业生物技术（英文版）

基　　金：Supported by the National Natural Science Foundation of China(31201750);Hunan Provincial Natural Science Foundation of China(2016JJ4009)

摘　　要：The dual-choices tests of behavioral test were used to study the gustatory behavioral responses to caffeine of Helicoverpa armigera larvae and H. assulta larvae. Electrophysiological responses were studied by electrophysiological tip recording. Behavioral experiments showed that caffeine was a feeding deterrent for both larvae, but it showed a stronger feeding deterring effect on the oligophagous H. assulta . The electrophysiological tip-recording results showed that both H. armigera larvae and H. assulta larvae had one caffeine-sensitive feeding deterrent neuron at the medial sensilla, and the electrophysiological pulse response of H. assulta larvae was significantly stronger than that of H. armigera larvae. Therefore, caffeine had a stronger feeding deterring effect on the oligophagous H. assulta than the polyphagous H. armigera . The difference in behavioral effect was closely related to the sensitivity of to caffeine the feeding deterrent neurons at the medial sensilla.The dual-choices tests of behavioral test were used to study the gustatory behavioral responses to caffeine of Helicoverpa armigera larvae and H. assulta larvae. Electrophysiological responses were studied by electrophysiological tip recording. Behavioral experiments showed that caffeine was a feeding deterrent for both larvae, but it showed a stronger feeding deterring effect on the oligophagous H. assulta . The electrophysiological tip-recording results showed that both H. armigera larvae and H. assulta larvae had one caffeine-sensitive feeding deterrent neuron at the medial sensilla, and the electrophysiological pulse response of H. assulta larvae was significantly stronger than that of H. armigera larvae. Therefore, caffeine had a stronger feeding deterring effect on the oligophagous H. assulta than the polyphagous H. armigera . The difference in behavioral effect was closely related to the sensitivity of to caffeine the feeding deterrent neurons at the medial sensilla.

关 键 词：Helicoverpa armigera H. assulta CAFFEINE Feeding deterrent Tip-recording 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治] TQ464.4[农业科学—植物保护]