Helicoverpa armigera (Hübner) has attacked several economically important crops since it was first reported in Brazil in 2013. Because insecticides have been used intensively to control H. armigera, resistant populations have been detected more frequently. One alternative to insecticides is the use of biological control with egg parasitoids from the family Trichogrammatidae (Hymenoptera). The present study evaluated the use of different species and strains of these parasitoids to control H. armigera in soybean. Five strains of Trichogramma pretiosum (Riley): RV (Rio Verde, Goiás, Brazil), SO (Sorriso, Mato Grosso, Brazil), 47A (Irvine, CA, USA), PR (Colombo, Paraná, Brazil), and AN (Anhumas, São Paulo, Brazil), and Trichogrammatoidea annulata (De Santis) denominated TR, from Anhumas, were used. The following parasitoid biological parameters were evaluated: parasitism rates (%), offspring viability (%) number of parasitoids emerged per egg, egg-adult duration (days), female longevity, and offspring sex ratio. Strain RV of T. pretiosum from central Brazil performed best.

中文翻译：

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两种赤眼蜂防治棉铃虫的潜力。


自 2013 年在巴西首次报道棉铃虫(Hübner) 以来，它已经危害了几种重要的经济作物。由于大量使用杀虫剂来控制棉铃虫，因此更频繁地发现了抗性种群。杀虫剂的一种替代方法是使用赤眼蜂科（膜翅目）的卵寄生蜂进行生物防治。本研究评估了使用这些寄生蜂的不同物种和品系来控制大豆中的棉铃虫。赤眼蜂(Riley) 的五种菌株：RV（巴西戈亚斯州里奥维德）、SO（巴西马托格罗索州索里索）、47A（美国加利福尼亚州尔湾）、PR（巴西科伦坡、巴拉那州）和 AN（使用来自 Anhumas 的 Anhumas，以及命名为 TR 的Trichogrammatoidea annulata (De Santis)。评估了以下寄生蜂生物学参数：寄生率（%）、后代活力（%）、每个卵中出现的寄生蜂数量、卵成虫持续时间（天）、雌性寿命和后代性别比。来自巴西中部的T. pretiosum菌株 RV 表现最好。