Electrophysiological responses of the rice leaffolder, Cnaphalocrocis medinalis, to rice plant volatiles.
The rice leaffolder, Cnaphalocrocis medinalis Guenée (Lepidoptera: Pyralidae), is one of the most destructive pests of rice. Electrophysiological responses of this species to 38 synthetic volatiles known to be released from rice plants (Poaceae: Oryza spp.) were studied using the electroantennogram (EAG) method. Compounds that elicited the strongest EAG responses for each physiological condition were selected for EAG dose-response tests at five concentrations. These compounds included: methyl salicylate, heptanol, linalool, cyclohexanol, and 2-heptanone for one-day-old male moths; heptanol, hexanal, (Z)-2-hexen-1-ol, and nonadecane for one-day- old females; methyl salicylate, heptanol, (E)-2-hexen-1-ol, and (Z)-2-hexen-1-ol for three-day- old males; linalool, heptanol, (E)-2-hexen-1-ol, 2-heptanone, and hexanal for three-day-old females; 2-heptanone, cyclohexanol, linalool, heptanol, and methyl salicylate for five-day-old virgin females; and methyl benzoate, (Z)-2-hexen-1-ol, heptanol, linalool, and hexanal for five- day-old mated females. Female and male C. medinalis exhibited broad overlap in their EAG responses, and there was no clear difference between male and female EAG responses to different compounds. Statistical analyses revealed that both volatile compound chemical structure and C. medinalis physiological condition (age, sex, and mating condition) had an effect on EAG response.
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China sunxiao19860310@126.com.
Xiao
X
Sun
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China 294231362@qq.com.
Zhuang
Z
Liu
Invasive Insect Biocontrol and Behavior Laboratory, Plant Sciences Institute, USDA-ARS, Beltsville, MD 20705- 2350 zhanga@ba.ars.usda.gov.
Aijun
A
Zhang
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China donghaibonihao@163.com.
Hai-Bo
HB
Dong
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China nl19882006@163.com.
Fang-Fang
FF
Zeng
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China kingchys_pan@126.com.
Xiang-Yu
XY
Pan
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China ymwang@mail.hzau.edu.cn.
Yongmo
Y
Wang
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wu han430070, P. R. China mqwang@mail.hzau.edu.cn.
Man-Qun
MQ
Wang
D000375:Aging; D000818:Animals; D057506:Arthropod Antennae / Q000187:drug effects* / Q000502:physiology; D055724:Electrophysiological Phenomena / Q000187:drug effects*; D005260:Female; D005740:Gases / Q000737:chemistry*; D008297:Male; D009036:Moths / Q000187:drug effects* / Q000502:physiology*; D012275:Oryza / Q000737:chemistry* / Q000378:metabolism; D012726:Sexual Behavior, Animal
D005740:Gases
electroantennogram