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J Econ Entomol

Title:		Design of an Attractant for Empoasca onukii (Hemiptera: Cicadellidae) Based on the Volatile Components of Fresh Tea Leaves
Author(s):		Bian L; Cai XM; Luo ZX; Li ZQ; Xin ZJ; Chen ZM;
Address:		"Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Science, Xihu, Hangzhou, China"
Journal Title:		J Econ Entomol
Year:		2018
Volume:		111
Issue:		2
Page Number:		629 - 636
DOI:		10.1093/jee/tox370
ISSN/ISBN:		1938-291X (Electronic) 0022-0493 (Linking)
Abstract:		"The tea leafhopper, Empoasca onukii Matsuda, is a serious pest of the tea plant. E. onukii prefers to inhabit vigorously growing tender tea leaves. The host selection of E. onukii adults may be associated with plant volatile compounds (VOCs). We sought to identify potentially attractive VOCs from tea leaves at three different ages and test the behavioral responses of E. onukii adults to synthetic VOC blends in the laboratory and field to aid in developing an E. onukii adult attractant. In darkness, the fresh or mature tea leaves of less than 1-mo old could attract more leafhoppers than the mature branches (MB) that had many older leaves (leaf age >1 mo). Volatile analysis showed that the VOC composition of the fresh leaves was the same as that of the mature leaves, but linalool and indole were not at detectable levels in VOCs from the MB. Moreover, the mass ratio differed for each common volatile in the three types of tea leaves. When under competition with volatiles from the MB, the leafhoppers showed no significant tropism to each single volatile but could be attracted by the synthetic volatile blend imitating the fresh leaves. With the removal of some volatile components, the effective synthetic volatile blend was mixed with (Z)-3-hexen-1-ol, (Z)-3-hexenyl acetate, and linalool at a mass ratio of 0.6:23:12.6. These three volatiles may be the key components for the host selection of E. onukii adults and could be used as an attractant in tea gardens"
Keywords:		"Animals *Behavior, Animal Camellia sinensis/*chemistry *Hemiptera Volatile Organic Compounds/*analysis;"
Notes:		"MedlineBian, Lei Cai, Xiao-Ming Luo, Zong-Xiu Li, Zhao-Qun Xin, Zhao-Jun Chen, Zong-Mao eng Research Support, Non-U.S. Gov't England 2018/01/24 J Econ Entomol. 2018 Apr 2; 111(2):629-636. doi: 10.1093/jee/tox370"