To further the use of local parasitoids to control the spotted wing drosophila suzukii (Matsumura) in Mexico, three treatments were implemented by sextuplicate in commercial berry fields of Colima and Jalisco from June 2017 to May 2018: single release of Trichopria drosophilae Perkins (pupal parasitoid), combined release of T. drosophilae + Leptopilina boulardi Barbotin, Carton & Kelner-Pillault (larval parasitoid), and a no release control. Compared with the no release sites, parasitism by T. drosophilae increased 4 and 4.1-fold at the single and combined release sites, respectively, and parasitism of L. boulardi increased 2.8-fold at the sites where it was evaluated. Additionally, it was registered a 50 and 55% reduction of D. suzukii at the sites with single and combined releases, respectively; in other words, supplementing T. drosophilae with L. boulardi provided little benefit compared with the release of T. drosophilae alone. These results indicate that single release of local T. drosophilae is a more cost-effective option to reduce D. suzukii populations, and that such activity can contribute significantly to the phytosanitary management of this invasive pest.

中文翻译：

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一次释放和结合释放的果蝇毛滴虫（膜翅目：双翅目）控制铃木果蝇（双翅目：果蝇）。

为了进一步利用当地的寄生蜂来控制斑翅果蝇suzukii（松村）在墨西哥，三个处理，方法是在科利马和哈利斯科州的商业浆果领域六月2017年2018年5月一式六份执行：单发布Trichopria果蝇珀金斯（蛹寄生蜂），果蝇T. + Leptopilina boulardi Barbotin，Carton＆Kelner-Pillault（幼虫寄生）的联合释放，以及无释放控制。与无释放位点相比，果蝇的寄生虫在单释放位点和联合释放位点分别增加了4倍和4.1倍，而博拉氏乳杆菌的寄生虫增加了在被评估的地点增加了2.8倍。此外，在单次释放和联合释放的地点，铃木D. suzukii分别减少了50％和55％。换句话说，与只释放果蝇相比，用果蝇L. boulardi补充果蝇就没有什么好处。这些结果表明，单释放果蝇嗜蝇菌是减少铃木蝇种群的更具成本效益的选择，而且这种活性可以大大促进这种入侵害虫的植物检疫管理。