背景:节食夜蛾,一种全球农业害虫,可以通过昆虫不育技术有效控制。然而,暴露于低于灭菌阈值的低剂量辐射可能会引起兴奋效应。这里,使用年龄阶段分析了S.frugiperda的可育后代种群的双相方面,给雄性和雌性蛹10-350Gyγ辐射后的两性寿命表。
结果:6天大的雌性和雄性p的父母灭菌剂量为200和350Gy,分别。总寿命,成人前生存率,净繁殖率,随着辐射剂量从250Gy减少到10Gy,后代种群的固有增长率增加。与未照射的对照组相比,用低剂量10-100Gy治疗的父母后代群体显示出更好的生命表参数。用10、50和100Gy和10Gy照射的雌性和雄性繁殖力,分别,超出控制范围,产生2339.4、2726.4、2311和2369个鸡蛋,与对照组生产的1802.9个鸡蛋相反。用10Gy照射的雄性显示出最高的内在增长率和净繁殖率,分别为0.1709和682.3。从存活率和繁殖力的预测表明,经过10Gy辐照后,雌性和雄性S.frugiperda种群的生长速度可能比对照组快得多。
结论:本研究通过生命表分析探讨了低剂量辐射对S.frugiperda的影响,同时提供了在改良的F1无菌技术中利用次级化γ剂量的增强功能。本文受版权保护。保留所有权利。
BACKGROUND: Spodoptera frugiperda, a global agricultural pest, can be effectively controlled through the sterile insect technique. However, exposure to low-dose radiation below the sterilization threshold may induce hormetic effects. Here, the biphasic aspects of the fertile progeny population of S. frugiperda were analyzed using an age-stage, two-sex life table after dosing male and female pupae with 10-350 Gy gamma radiation.
RESULTS: The parental sterilizing dose for 6-day-old female and male pupae was 200 and 350 Gy, respectively. The total longevity, pre-adult survival rate, net reproduction rate, and intrinsic growth rate of the offspring population increased with decreasing radiation doses from 250 to 10 Gy. Offspring population of parents treated with low doses of 10-100 Gy showed better life table parameters compared to non-irradiated controls. Females and males fecundity irradiated with 10, 50, and 100 Gy and 10 Gy, respectively, exceeded controls, producing 2339.4, 2726.4, 2311, and 2369 eggs, as opposed to 1802.9 eggs produced by the controls. Males irradiated with 10 Gy displayed the highest intrinsic rates of increase and net reproduction rate, at 0.1709 and 682.3, respectively. Projections from the survival rate and fecundity indicated that female and male S. frugiperda populations after 10 Gy irradiation may grow considerably faster than the controls.
CONCLUSIONS: This study explores the hormetic effects of low-dose radiation on S. frugiperda through life table analysis, while providing enhancements for utilizing substerilizing gamma dose in a modified F1 sterility technique. © 2023 Society of Chemical Industry.