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Effects of pear fruit-derived volatiles and their concentrations on the responses of oriental fruit moths

文献类型： 外文期刊

作者： Hu, Xuefeng 1 ; Li, Na 1 ; Cao, Weiye 1 ; Wang, Yi 1 ; Hu, Rongshan 2 ; Li, Jie 3 ; Ma, Ruiyan 1 ; Kong, Weina 1 ;

作者机构： 1.Shanxi Agr Univ, Coll Plant Protect, Shanxi Key Lab Integrated Pest Management Agr, Taiyuan 030031, Peoples R China

2.Ecol Prod Res & Dev Tech Serv Ctr Pu Cty, Lingfen, Peoples R China

3.Shanxi Agr Univ, Taiyuan, Peoples R China

关键词： adult response; dose effect; Grapholita molesta; host location; volatile effect

期刊名称：ENTOMOLOGICAL RESEARCH （ 影响因子：1.3； 五年影响因子：1.3 ）

ISSN： 1738-2297

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Grapholita molesta (Busck) is an important pest of pear trees. Numerous esters accumulate consistently in mature pear fruits. However, little is known about the effects of single esters from pear fruits at different concentrations on the responses of male and female G. molesta. In this study, the responses of virgin males, virgin females, and gravid females to five esters (3-methylbutyl acetate, ethyl hexanoate, ethyl butanoate, butyl acetate, and hexyl acetate) of pear fruits at three dosage levels (1, 5 and 10 mu g/mu L) were investigated using electroantennography (EAG), wind tunnel experiments, and field tests. Our results showed that ethyl butanoate (5 mu g/mu L) elicited higher EAG responses in virgin females and males than a mixture of all five volatiles, and elicited an equal EAG response to that for the mixture in gravid females, with all responses to ethyl butanoate and the mixture being higher than the response to hexane alone. For upwind flight, ethyl butanoate (5 mu g/mu L) excited equal moth flight-location behavior in virgin and gravid females to that for the mixture, which were both higher than the response to hexane. For close flight, ethyl hexanoate (5 mu g/mu L) and 3-methylbutyl acetate (10 mu g/mu L) appeared to be the activating compounds, eliciting equal responses from virgin females to that of the mixture, and higher responses of gravid females to that of the mixture, both of which were higher than the responses to hexane. Upwind and close flight responses of virgin males were lower than those of virgin and gravid females. In field trials, we verified that traps baited with ethyl butanoate (5 mu g/mu L) captured more moths than the other esters. Therefore, from the esters and concentrations tested, we recommend ethyl butanoate (5 mu g/mu L) for potential use as an attractant for G. molesta in orchards.

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