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Laboratory and field evaluation of a combination of attractants and repellents to control Drosophila suzukii
Entomologia Generalis ( IF 5.6 ) Pub Date : 2020-11-03 , DOI: 10.1127/entomologia/2020/1035
Chloé D. Galland , Valérie Glesner , François Verheggen

Drosophila suzukii is an invasive pest which lays eggs in ripe fruits. Its short generation time, high fertility and wide host-range allow this species to cause important yield loss: from 40 to 100% in strawberries. Current chemical methods are not effective, and producers call for the development of biological alternatives. In this work, we aim at contributing to the development of a semiochemical-based strategy that combines attractants and repellents. During laboratory assays, we evaluated and compared the attractiveness and repellency of several biological substances originating from plants and fruits, presented individually or as mixtures. We found the essential oil of peppermint to be the most repellent, while the most attractive mixture of semiochemicals was made out of ethanol and acetoin. These volatile blends were included in semiochemical releasers (i.e. rubber septa) and the release rate was shown to be effective for a minimum of 20 days. Finally, we performed a field assay in commercial strawberry greenhouses. We associated repellents located at the entrance of the greenhouses with attractant-containing traps located in the strawberry lines. Although this result is not statistically significant, the association of attractants and repellents reduced the number of D. suzukii trapped inside the greenhouse by 42%. Moreover, the proportion of marketable fruit was higher in the greenhouses where attractants were introduced. We discuss the potential of combining attractants and repellents to control D. suzukii, as well as the association of semiochemicals with microbial agents.

中文翻译:

实验室和野外评估引诱剂和驱避剂组合以控制果蝇铃木

铃木果蝇是一种侵入性害虫,可在成熟果实中产卵。它的产生时间短,高繁殖力和广泛的寄主范围使该物种造成重要的产量损失:草莓占40%至100%。当前的化学方法无效,生产商呼吁开发生物替代品。在这项工作中,我们致力于为结合引诱剂和驱避剂的基于化学信息的策略的发展做出贡献。在实验室分析过程中,我们评估并比较了几种源自植物和水果的生物物质的吸引力和排斥性,这些物质单独或混合存在。我们发现薄荷精油具有最强的驱避性,​​而最诱人的化学信息素混合物是由乙醇和丙酮制成的。这些挥发性混合物包括在化学信息释放剂(即橡胶隔垫)中,并且释放速率显示至少20天有效。最后,我们在商业草莓温室中进行了现场分析。我们将位于温室入口处的驱虫剂与位于草莓株系中的含引诱剂的诱捕器相关联。尽管该结果在统计上并不显着,但诱因和驱避剂的结合使温室内被捕集的铃木D.数量减少了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。橡胶隔垫),并且释放速度显示至少20天有效。最后,我们在商业草莓温室中进行了现场分析。我们将位于温室入口处的驱虫剂与位于草莓株系中的含引诱剂的诱捕器相关联。尽管该结果在统计上并不显着,但诱因和驱避剂的结合使温室内被捕集的铃木D.数量减少了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。橡胶隔垫),并且释放速度显示至少20天有效。最后,我们在商业草莓温室中进行了现场分析。我们将位于温室入口处的驱虫剂与位于草莓株系中的含引诱剂的诱捕器相关联。尽管该结果在统计上并不显着,但诱因和驱避剂的结合使温室内被捕集的铃木D.数量减少了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。我们将位于温室入口处的驱虫剂与位于草莓株系中的含引诱剂的诱捕器相关联。尽管该结果在统计上并不显着,但诱因和驱避剂的结合使温室内被捕集的铃木D.数量减少了42%。此外,在引入引诱剂的温室中,可销售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。我们将位于温室入口处的驱虫剂与位于草莓株系中的含引诱剂的诱捕器相关联。尽管该结果在统计上并不显着,但诱因和驱避剂的结合使温室内被捕集的铃木D.数量减少了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。铃木被温室困住了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。铃木被温室困住了42%。此外,在引入引诱剂的温室中,可出售水果的比例更高。我们讨论了结合引诱剂和驱避剂控制铃木D.的潜力,以及化学信息素与微生物制剂的关联。
更新日期:2020-10-16
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