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Ripening stages and volatile compounds present in strawberry fruits are involved in the oviposition choice of Drosophila suzukii (Diptera: Drosophilidae)
Crop Protection ( IF 2.8 ) Pub Date : 2021-12-02 , DOI: 10.1016/j.cropro.2021.105883
Rayne Baena 1 , Emily S. Araujo 2 , João P.A. Souza 3 , Adélia M. Bischoff 2 , Paulo H.G. Zarbin 3 , Maria A.C. Zawadneak 2 , Francine L. Cuquel 1
Affiliation  

Drosophila suzukii (Diptera: Drosophilidae) is an invasive polyphagous pest that causes economic losses in berry production worldwide. Its damage is caused by the ovipositor used to lay eggs into fruits, which also introduces microorganisms that hasten fruit spoilage and serve as food for larvae, leading to non-marketable fruits. Strawberry cultivars more resistant to D. suzukii can help in the management of this pest. Therefore, the aim of this study was to compare the susceptibility of Albion, Monterrey, and San Andreas, worldwide important strawberry cultivars, to D. suzukii harvested at three ripening stages (epidermis with 50%, 75%, and 100% of red surface). Moreover, fruit volatile compounds and their effect over D. suzukii female and male attraction were identified. Free-choice and non-choice bioassays were carried out to check oviposition preference. Fruit trait effects on oviposition preference were determined. Additionally, the volatile organic compounds active in D. suzukii antennas, and their contribution to pest attraction were analyzed. Both, cultivar and ripening stage affected fruit choice in the free-choice bioassay (p < 0.001). More mature fruits (sweeter and less firm) were more oviposited. However, in the no-choice bioassay neither the cultivar nor the ripening stage affected the oviposition choice (p = 0.998). Total amount of volatiles did not explain the oviposition choice, suggesting the relevance of specific volatiles. (±)-Linalool affected D. suzukii females (p = 0.0053) behavior and needs further investigation for being used as an attractant in mass-capture lures, monitoring and toxic baits, and assisting in oviposition control.



中文翻译:

草莓果实中存在的成熟阶段和挥发性化合物与 Drosophila suzukii(双翅目:果蝇科)的产卵选择有关

铃木果蝇(双翅目:果蝇科)是一种侵入性多食性害虫,在全球浆果生产中造成经济损失。它的损害是由用于将卵产入水果中的产卵器造成的,这也会引入微生物,加速水果腐败并成为幼虫的食物,导致无法销售的水果。D. suzukii更具抗性的草莓栽培品种有助于管理这种害虫。因此,本研究的目的是比较全球重要的草莓品种 Albion、Monterrey 和 San Andreas 对在三个成熟阶段收获的D. suzukii的敏感性(表皮具有 50%、75% 和 100% 的红色表面) )。此外,水果挥发性化合物及其对D. suzukii 的影响确定了女性和男性的吸引力。进行自由选择和非选择生物测定以检查产卵偏好。测定了果实性状对产卵偏好的影响。此外,还分析D. suzukii天线中挥发性有机化合物及其对害虫吸引的贡献。在自由选择生物测定中,栽培品种和成熟阶段都会影响水果的选择(p < 0.001)。更成熟的水果(更甜且不那么坚硬)会产生更多的产卵。然而,在无选择生物测定中,栽培品种和成熟阶段都不影响产卵选择(p = 0.998)。挥发物的总量不能解释产卵选择,表明特定挥发物的相关性。(±)-芳樟醇影响D. suzukii 雌性 (p = 0.0053) 的行为,需要进一步调查在大规模捕获诱饵、监测和有毒诱饵中用作引诱剂,并协助控制产卵。

更新日期:2021-12-07
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