NIAB East Malling, East Malling, UK.
Natural Resources Institute, University of Greenwich, Chatham, UK.
Pest Manag Sci. 2024 Jul;80(7):3160-3171. doi: 10.1002/ps.8020. Epub 2024 Feb 23.
Spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is an economically important pest of soft and stone fruit crops. The aim of this study was to identify repellents, formulated in dispensers, which could protect crops from D. suzukii. Fourteen potential repellents were screened against summer- and winter-morph D. suzukii through electroantennography and behavioural bioassays. Repellents effective in the laboratory were tested in polytunnels to determine their efficacy in reducing catches in fruit-baited traps. Further trials of three potential repellents were conducted to determine the distances over which repellent dispensers could reduce D. suzukii emergence in a strawberry crop.
All 14 chemicals screened were detected by the antennae of both D. suzukii morphs. Hexyl acetate and geosmin both elicited a significantly greater corrected EAG response in summer morphs than winter morphs. Summer-morph D. suzukii were repelled by butyl acetate, ethyl propionate, methyl N,N-dimethyl anthranilate, geosmin, methyl salicylate, DEET and benzaldehyde at one or more doses test in laboratory bioassays. Winter morphs were repelled by ethyl propionate, methyl anthranilate, methyl N,N-dimethyl anthranilate, DEET, benzaldehyde and butyl anthranilate at one or more of the doses tested in the laboratory. Ethyl propionate, methyl N,N-dimethylanthranilate and benzaldehyde repelled both morphs from fruit-baited traps in polytunnel trapping trials. Ethyl propionate and methyl N,N-dimethylanthranilate reduced emergence of D. suzukii in a strawberry crop over 3-5 m.
Ethyl propionate and methyl N,N-dimethylanthranilate may protect strawberry crops against D. suzukii. Future work should test these repellents in combination with attractants in a 'push-pull' strategy. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
斑翅果蝇，果蝇 suzukii（松村）（双翅目：果蝇科），是一种经济上重要的软果和硬果作物害虫。本研究的目的是鉴定在分配器中配制的驱避剂，这些驱避剂可以保护作物免受 D. suzukii 的侵害。通过触角电生理学和行为生物测定，对 14 种潜在的驱避剂进行了筛选，以对抗夏季和冬季形态的 D. suzukii。在聚氯乙烯大棚中测试了在实验室中有效的驱避剂，以确定它们在减少水果诱捕器中捕获的效果。进一步对三种潜在驱避剂进行了三次试验，以确定驱避剂分配器在草莓作物中减少 D. suzukii 出现的距离。
筛选的 14 种化学物质均被两种形态的 D. suzukii 的触角检测到。己酸乙酯和土青霉都在夏季形态中引起比冬季形态更大的校正 EAG 反应。在实验室生物测定中，丁基乙酸酯、丙酸乙酯、N，N-二甲基邻氨基苯甲酸甲酯、土青霉、水杨酸甲酯、DEET 和苯甲醛在一个或多个剂量测试中对夏季形态的 D. suzukii 具有驱避作用。在实验室测试的一个或多个剂量下，冬季形态对丙酸乙酯、邻氨基苯甲酸甲酯、N，N-二甲基邻氨基苯甲酸甲酯、DEET、苯甲醛和丁基邻氨基苯甲酸酯有驱避作用。在聚氯乙烯大棚诱捕试验中，丙酸乙酯、N，N-二甲基邻氨基苯甲酸甲酯和苯甲醛都能从诱捕水果的诱捕器中驱避两种形态。丙酸乙酯和 N，N-二甲基邻氨基苯甲酸甲酯减少了草莓作物中 D. suzukii 的出现，距离为 3-5 米。
丙酸乙酯和 N，N-二甲基邻氨基苯甲酸甲酯可能会保护草莓作物免受 D. suzukii 的侵害。未来的工作应该在“推挽”策略中测试这些驱避剂与引诱剂的组合。© 2024 作者。害虫管理科学由约翰威立父子公司代表化学工业协会出版。
