| Title: | "Tea green leafhopper-induced synomone attracts the egg parasitoids, mymarids to suppress the leafhopper" |
| Author(s): | Wang M; Han S; Wu Y; Lin J; Zhou J; Han B; |
| Address: | "Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China. Shanghai Farm Co., Ltd. of Bright Food Group, Yancheng, China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: The tea green leafhopper, Empoasca flavescens is the most important pest of tea plants in China. Mymarid attractants based on herbivore-induced plant volatiles (HIPVs) from leafhopper feeding and oviposition-induced plant volatiles (OIPVs) were formulated and tested as a novel pest control agent against the leafhopper in tea plantations. RESULTS: Results showed that two mymarid species, Stethynium empoascae and Schizophragma parvula, had a reducing effect on leafhopper populations. The HIPVs and OIPVs were identified and bioassayed to screen the key synomones showing strong attraction to the mymarids. They were formulated into different blends, of which Field Attractant 1, comprising linalool, methyl salicylate, (E)-2-hexenal, perillen and alpha-farnesene at ratio of 1:2:3:58:146 (20 mg/lure), showed the strongest attraction to the mymarids. In field trials with the attractant, the average parasitism rate (60.46 +/- 23.71%) of tea leafhoppers by the two mymarids in the attractant-baited area was significantly higher than that (42.85 +/- 19.24%) in the CK area. Also, the average leafhopper density (46 +/- 30 per 80 tea shoots) in the attractant-baited area was significantly lower than that (110 +/- 70 per 80 tea shoots) in the CK area. CONCLUSION: This study showed that a synthetic blend of key volatiles from HIPVs and OIPVs at an optimal ratio can be formulated into an attractant with the potential to attract and retain wild mymarid populations to suppress leafhopper populations in infested tea plantations, so as to reduce or avoid the spraying of insecticides. (c) 2023 Society of Chemical Industry" |
| Keywords: | HIPVs OIPVs attractants mymarids tea green leafhopper; |
| Notes: | "PublisherWang, Mengxin Han, Shanjie Wu, Yiqi Lin, Jinli Zhou, Jiangxuan Han, Baoyu eng 2019YFD1002100/National Key Research and Development Program of China/ 32072626/National Natural Science Foundation of China/ 32001910/National Natural Science Foundation of China/ 2021YW41/The Fundamental Research Funds for the Provincial Universities of Zhejiang/ 2019YW18/The Special program of scientific and technological innovation for students of China Jiliang University/ 2020.1-2024.12/The Team Scientific Special Commissioner Project of Zhejiang Provincial Department of Science and Technology/ SY-1/The Team Scientific Special Commissioner Project of Zhejiang Provincial Department of Science and Technology/ LGN20C140005/Zhejiang Provincial Fundamental and Public Welfare of China/ 2020C02026/Zhejiang Provincial Key Research and Development Program of China/ England 2023/05/27 Pest Manag Sci. 2023 Oct; 79(10):3785-3795. doi: 10.1002/ps.7563. Epub 2023 Jun 22" |
