Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China.
The College of Agronomy, Xinjiang Agricultural University, Xinjiang, China.
J Econ Entomol. 2024 Oct 14;117(5):1729-1738. doi: 10.1093/jee/toae168.
Trichogramma spp. wasps are egg parasitoids with a long history of mass rearing for augmentation biocontrol programs in field crop and orchard landscapes. Supplementary nutrition can improve the longevity, fecundity, and biocontrol efficacy of parasitoids. To improve the production efficiency and parasitism performance of Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae), the present study screened and examined the potential supplementary nutrients for this biological control agent. Dietary supplementation with a 10% sucrose solution significantly increased wasp longevity and parasitism potential of T. dendrolimi on host eggs, but provision of pollen did not provide additional benefits. Laboratory and greenhouse cage tests demonstrated that wasp access to soybean aphid Aphis glycines Matsumura (Hemiptera: Aphididae) honeydew, comprised primarily of melezitose and trehalose, improved T. dendrolimi longevity and parasitism. In conclusion, provision of a 10% sucrose solution to adult wasps will enhance the mass-rearing efficiency of T. dendrolimi; furthermore, field release of T. dendrolimi by plant vectors bearing honeydew-producing aphids holds promise for improving the biocontrol efficacy of T. dendrolimi.
小菜蛾绒茧蜂是一种卵寄生蜂，长期以来一直被大量饲养，用于田间作物和果园景观中的生物防治计划。补充营养可以提高寄生蜂的寿命、繁殖力和生物防治效果。为了提高松毛虫赤眼蜂（膜翅目：赤眼蜂科）的生产效率和寄生性能，本研究筛选和检验了这种生物防治剂的潜在补充营养物质。10%蔗糖溶液的饮食补充显著提高了小菜蛾绒茧蜂对宿主卵的寿命和寄生潜力，但花粉的提供没有提供额外的好处。实验室和温室笼试验表明，小菜蛾绒茧蜂接触到由密二糖和海藻糖主要组成的大豆蚜虫（半翅目：蚜虫科）蜜露，可提高小菜蛾绒茧蜂的寿命和寄生能力。总之，向成虫提供 10%的蔗糖溶液将提高小菜蛾绒茧蜂的大规模繁殖效率；此外，通过携带产蜜露蚜虫的植物载体释放小菜蛾绒茧蜂有望提高小菜蛾绒茧蜂的生物防治效果。
