Evaluation of Selected Plant Volatiles as Attractants for the Stick Tea Thrip Dendrothrips minowai in the Laboratory and Tea Plantation

文献类型： 外文期刊

第一作者： Xiu, Chunli

作者： Xiu, Chunli;Bian, Lei;Luo, Zongxiu;Li, Zhaoqun;Fu, Nanxia;Cai, Xiaoming;Chen, Zongmao;Xiu, Chunli;Bian, Lei;Luo, Zongxiu;Li, Zhaoqun;Fu, Nanxia;Cai, Xiaoming;Chen, Zongmao;Zhang, Fengge;Pan, Hongsheng

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期刊名称：INSECTS （ 影响因子：3.139； 五年影响因子：3.285 ）

ISSN：

年卷期： 2022 年 13 卷 6 期

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收录情况： SCI

摘要： The stick tea thrip (Dendrothrips minowai Priesner) is the main pest thrip in tea (Camellia sinensis) plantations in China, and seriously affects the quality and yield of tea. Plant-derived semiochemicals provide an alternative to pheromones as lures and these compounds possess powerful attractiveness. In this study, we selected 20 non-pheromone semiochemicals, including compounds that have been reported to attract other thrips and some volatiles emitted from tea plants as the potential attractant components for D. minowai. In electroantennogram (EAG) assays, 10 synthetic compounds (p-anisaldehyde, 3-methyl butanal, (E)-beta-ocimene, farnesene, nonanal, eugenol, (+)-alpha-pinene, limonene, (-)-alpha-pinene, and gamma-terpinene) elicited significant antennal responses in female D. minowai. In addition, a two-choice H-tube olfactometer bioassay showed that D. minowai displayed significant positive responses to eight compound dilutions (p-anisaldehyde, eugenol, farnesene, methyl benzoate, 3-methyl butanal, (E)-beta-ocimene, (-)-alpha-pinene, and (+)-alpha-pinene) when compared with the solvent control at both 1 and 2 h. Moreover, gamma-terpinene exhibited a significantly deterrent effect on D. minowai. Finally, trap catches of four compounds (p-anisaldehyde, eugenol, farnesene, and 3-methyl butanal, respectively) significantly increase in tea plantations. Among these, the maximum number of D. minowai collected by blue sticky traps baited with p-anisaldehyde was 7.7 times higher than the control. In conclusion, p-anisaldehyde, eugenol, farnesene, and 3-methyl butanal could significantly attract D. minowai in the laboratory and under field conditions, suggesting considerable potential as commercial attractants to control D. minowai populations.

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