Biological development of Euborellia annulipes reared with artificial diets and Ephestia kuehniella eggs1

ABSTRACT One of the forms of integrated pest management is the rearing of insects using artificial diets. The Euborellia annulipes species has gained prominence for being voracious with its preys, demonstrating a potential for use in biological control programs. This study aimed to evaluate the biological development of the E. annulipes predator fed with artificial diets and E. kuehniella eggs. Newly hatched predator nymphs were separated into an experimental unit consisting of 5 insects, 10 replicates and 7 treatments. The instars duration, nymphal period and viability, postures, number of eggs per posture, period of pre-oviposition and egg incubation and egg viability were evaluated. There was no difference for the periods nymphal, pre-oviposition and incubation of E. annulipes eggs. Oviposition ranged from 23.8 to 73.0 eggs/posture, as a function of diet. Artificial diets based on E. kuehniella eggs can be used for rearing E. annulipes. However, reared eggs fed with rice flour should be avoided, because they reduce oviposition and influence the E. annulipes development.

摘要 害虫综合治理的实施途径之一，是利用人工饲料饲养昆虫。环纹肥螋（Euborellia annulipes）因捕食性极强而广受关注，其在生物防治项目中具备潜在应用价值。本研究旨在评估取食人工饲料与粉斑螟（Ephestia kuehniella）卵的环纹肥螋的生长发育情况。将初孵的捕食性若虫按每实验单元5头的规格分组，设置10次重复与7种处理方案。本研究观测的指标包括各龄期时长、若虫期时长与存活率、产卵批次、每产卵批次的卵量、产卵前期时长、卵孵化期时长以及卵存活率。结果显示，环纹肥螋的若虫期、产卵前期及卵孵化期均无显著组间差异。产卵量随饲料类型的不同介于23.8至73.0粒/产卵批次之间。基于粉斑螟卵的人工饲料可用于环纹肥螋的饲养，但应避免使用以米粉为基础的人工饲料，因其会降低产卵量并影响环纹肥螋的生长发育。