EAG and olfactory behavioral responses of Lygus pmtensis to volatiles from seven host plants species

Author of the article:SUN Peng** Dilinuer Aimaiti GOU Chang-Qing FENG Hong-Zu***

Author's Workplace：Tarim Uuiversity, The National and Local Joint Engineering Laboratory of High Efficiency and Superior-Quality Cultivation and Fruit Deep Processing Technology of Characteristic Fruit Trees in South Xinjiang, Scientific Observing and Experimental Station of Crop Pests in Alar, Ministry of Agriculture, P. R. China.Southern Xinjiang Key Laboratory of IPM of Tarim Uuiversity, Alar 843300, China

Key Words：Lygus pmtensis; host plants; volatiles; EAG response; taxis behavior

Abstract： [Objectives]  To identify potential attractants, or repellents, for use in the IPM of Lygus pmtensis. [Methods]  The EAG and behavioral responses of L. pmtensis to volatiles from seven different host plants (Kochia prostrata (L.) Schrad., Chenopodium glaucum, Brassica oleracea L. var. botrytis L., Convolvulus arvensis L., Brassica campestris L. ssp. chinensis Makino, Chenopodium serotinum L., Lycopersicon esculentum Mill.) were measured and compared. Volatile organic compounds from the different host plants were sampled using SPEM and then identified and quantified with GC-MS. EAG and behavioral responses to 9 candidate volatiles from different host plants were then measured and compared. [Results] Thirty-one distinct volatile compounds were isolated from the seven host plants. There was a significant difference in volatiles between species. All 9 of the candidate volatiles tested elicited EAG responses; the strongest EAG response was elicited by Nonanal. There were significant differences in the EAG responses of males and females to the volatile compounds tested; females responded to 3-Hexen-1-ol, acetate, (Z)- and Nonanal more strongly than males. Females also had significantly different behavioral responses to Nonanal, 1,6,10-Dodecatriene, 7,11-dimethyl-3-methylene-, (E)-, α-Pinene, Caryophyllene, 3-Hexen-1-ol, acetate, (Z)-, 1-Hexanol, 2-ethyl. [Conclusion]  Male and female L. pmtensis have different EAG and behavioral responses to volatiles from different host plants. Some potential attractants for the control of L. pmtensis were identified.