柞蚕是我国的特色优势资源，因用其卵繁育赤眼蜂具有成本低、生产工艺简单、成品蜂耐储藏等优点，目前已成为人工大量繁育赤眼蜂的优良替代繁殖寄主。但因柞蚕卵可繁育优势赤眼蜂种类过少（目前主要用于松毛虫赤眼蜂繁育），而极大限制了多数优势赤眼蜂种类的生产和推广应用。已有研究结果表明，一些赤眼蜂种类（如玉米螟赤眼蜂和黏虫赤眼蜂）可以寄生柞蚕卵并完成发育，但很难穿破柞蚕卵壳正常出蜂。本项目重点研究松毛虫赤眼蜂和玉米螟赤眼蜂及黏虫赤眼蜂在不同条件下柞蚕卵上的竞争作用，涉及影响因素包括温度、湿度、光照、蜂种来源、寄主卵龄、蜂卵比、接蜂方式等，通过测定并观察不同条件下各蜂种组合对柞蚕卵的寄生选择和发育适合度，明确松毛虫赤眼蜂和其它赤眼蜂种类在柞蚕卵上的竞争互作机制。本研究可为尝试开发基于柞蚕卵的“一卵多蜂”技术提供理论基础，有利于开创基于柞蚕卵为中间繁育寄主的赤眼蜂繁育与利用新模式。

The oak-silkworm, Antheraea pernyi Guerin-Meneville, is one of the best factitious hosts for Trichogramma mass production in China due to the advantages of low cost and simple production craft with it, and enduring long-term storage with good quality. However, presently only T. dendrolimi is massively produced with the large host eggs of oak-silkworm so that mass productions of most Trichogramma species and their implications for pest biological control have been limited. Previous results indicated that some Trichogramma species, such as T. ostriniae and T. leucaniae, had the capacity of parasitizing eggs of A. Pernyi and developing to adults, but the parasitoids could not break and craw out the host-egg shell. In this study, the interspecific competition will be investigated between T. dendrolimi and T. ostriniae (or T. leucaniae) under various conditions with different temperature, humidity, light, parasitoid source, host-egg age, ratio of parasitoid to host egg, and ways of introducing parasitoid. Through estimating and observing the host selection and developmental adaption between two Trichogramma species under different conditions, we will determine the mechanisms of competitive interactions of Trichogramma species on eggs of A. pernyi. The present study will improve the development of Trichogramma mass production technology with large host eggs, provide theoretical bases for developing products of several Trichogramma species concurrently reared with one host egg, and create a new pattern of Trichogramma production and implication with eggs of A. pernyi.