Maize production faces a significant threat from Spodoptera frugiperda (J. E. Smith) worldwide; historically, Trichogramma pretiosum Riley has served as the primary augmentative egg parasitoid for its biological control. However, since 2004, Telenomus remus Nixon has emerged as a viable global alternative. On a regional scale, in Mexico, Trichogramma atopovirilia (Oatman & Platner) was theorized to outperform T. pretiosum, proving superior in both laboratory and field conditions in 2020. To further the field efficacy of the augmentative use of parasitoids as biological agents of S. frugiperda, we conducted comparisons of biological and population parameters under laboratory-controlled conditions to determine whether T. remus would be more effective than T. atopovirilia, the best Trichogramma parasitoid in Mexico for S. frugiperda. We found that the former parasitoid had statistically significant longer female and male longevity, as well as a higher proportion of female offspring, and greater numerical values in net reproduction rate, intrinsic rate of increase, and finite rate of increase, but no differences were found in the number of days required for both parasitoids to develop from egg to female or egg to male, as well as in the mean generation time and doubling time. Under the conditions of these trials, T. remus had a 47.02% greater intrinsic rate of increase (rm) and may thus be a more effective biological control agent for S. frugiperda than T. atopovirilia. However, these biological and population parameter comparisons are the first execution worldwide; further studies are needed to validate these promising T. remus results.

中文翻译：

---

Telenomus remus 和 Trichogramma atopovirilia 作为 Spodopterafrugiperda 生物防治剂的生物学和种群参数


玉米生产面临来自全球草地贪夜蛾 （J. E. Smith） 的重大威胁;从历史上看，Trichogramma pretiosum Riley 一直是其生物控制的主要增强卵寄生虫。然而，自 2004 年以来，Telenomus remus Nixon 已成为可行的全球替代方案。在区域范围内，在墨西哥，Trichogramma atopovirilia （Oatman & Platner） 理论上表现优于T. pretiosum，在2020年的实验室和田间条件下都证明了优越性。为了进一步进一步增强使用类寄生虫作为 S. frugiperda 生物制剂的现场效果，我们在实验室控制条件下进行了生物学和种群参数的比较，以确定 T. remus 是否比 T. atopovirilia 更有效，T. atopovirilia 是墨西哥最好的 Trichogramma 寄生虫 S. frugiperda。我们发现前类寄生虫具有统计学意义的雌性和雄性寿命更长，雌性后代比例更高，净繁殖率、内在增长率和有限增长率的数值更大，但未发现两种寄生虫从卵发育为雌性或卵为雄性所需的天数存在差异， 以及平均生成时间和倍增时间。在这些试验的条件下，T. remus 的内在增加率 （rm） 高 47.02%，因此可能是比 T. atopovirilia 更有效的 S. frugiperda 生物防治剂。然而，这些生物学和群体参数比较是全世界的首次执行;需要进一步的研究来验证这些有希望的 T. remus 结果。