Bagrada hilaris (Burmeister) is a serious pest on brassica crops in many regions throughout the world. As part of our efforts to enhance biological control, we have been studying an egg parasitoid that was collected from B. hilaris eggs found on brassica plant debris in Pakistan. This species has recently been described as Ooencyrtus mirus Triapitsyn & Power. A major component of rearing biological control agents is understanding the relationship among host egg age, parasitoid age, and reproductive success. To this end, we used a factorial design to evaluate all combinations of host egg ages 0-5 d and parasitoid ages 0-11 d. The results showed that the best combinations are 0- to 1-d-old host eggs with 3- to 10-d-old parasitoids. A further study using frozen host eggs showed that O. mirus can reproduce as successfully on frozen B. hilaris eggs as on fresh ones.

中文翻译：

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寄生物龄、寄主卵龄和寄主卵冷冻对 Ooenchrtus mirus（膜翅目：Encyrtidae）对 Bagrada hilaris（半翅目：Pentatomidae）卵繁殖成功的影响

Bagrada hilaris (Burmeister) 是世界上许多地区芸苔属植物的严重害虫。作为我们加强生物控制努力的一部分，我们一直在研究从巴基斯坦芸苔属植物残骸上发现的 B. hilaris 卵中收集的卵寄生物。该物种最近被描述为 Ooencyrtus mirus Triapitsyn & Power。饲养生物控制剂的一个主要组成部分是了解寄主卵龄、寄生物龄和繁殖成功率之间的关系。为此，我们使用因子设计来评估寄主卵龄 0-5 天和寄生物龄 0-11 天的所有组合。结果表明，最佳组合是 0 至 1 日龄的寄主卵与 3 至 10 日龄的寄生蜂。使用冷冻寄主卵的进一步研究表明 O.mirus 可以在冷冻 B.