【目的】繁育寄主及成蜂日龄均会影响赤眼蜂体内的抱卵量,为了解繁育寄主及育出赤眼蜂个体大小与赤眼蜂抱卵量的关系,我们在室内研究了米蛾Corcyra cephalonica(Stainton)卵和亚洲玉米螟Ostrinia furnacalis(Güenée)卵作为繁育寄主对3种赤眼蜂雌蜂大小、抱卵量的影响。【方法】在光周期14L∶10D、温度25±1℃的室内条件下,以米蛾卵、亚洲玉米螟卵作为繁育寄主,解剖不同日龄(羽化后12-72 h)松毛虫赤眼蜂Trichogramma dendrolimi Matsumura、玉米螟赤眼蜂Trichogramma ostriniae Pang et Chen以及稻螟赤眼蜂Trichogramma japonicum Ashmead,观察雌蜂抱卵量,测量成蜂的大小,分析雌蜂抱卵量与其日龄、个体大小以及繁育寄主的关系。【结果】在羽化后48 h以内,3种蜂的抱卵量随雌蜂日龄的增长而增加。羽化后72 h,除米蛾卵繁育的玉米螟赤眼蜂及玉米螟卵繁育的松毛虫赤眼蜂的抱卵量比羽化后48 h时略高外,其他组合均出现下降。以亚洲玉米螟卵为繁育寄主时的玉米螟赤眼蜂的抱卵量显著高于对应日龄的以米蛾卵为繁育寄主时的抱卵量,而松毛虫赤眼蜂(除羽化后12和24 h外)和稻螟赤眼蜂则相反;以米蛾卵为繁育寄主时,相同日龄的赤眼蜂中,松毛虫赤眼蜂抱卵量最高,稻螟赤眼蜂的抱卵量最低;以亚洲玉米螟卵为繁育寄主时,玉米螟赤眼蜂抱卵量最高,稻螟赤眼蜂抱卵量最低。雌蜂抱卵量与雌蜂个体大小呈线性正相关,相关程度随雌蜂日龄增加而更加明显。【结论】后足胫节长度可以作为评价松毛虫赤眼蜂、玉米螟赤眼蜂和稻螟赤眼蜂质量的指标。赤眼蜂抱卵量受繁育寄主、赤眼蜂蜂种及雌蜂日龄的显著影响,寄主的适合性也会影响育出赤眼蜂的大小,筛选合适的繁育寄主有助于提高赤眼蜂的质量。 【Aim】 Breeding host and adult bee age all affect the amount of eggs held in Trichogramma. In order to understand the relationship between host size and number of Trichogramma transplanted eggs, we studied the relationship between Corcyra Effects of cephalonica (Stainton) eggs and Ostrinia furnacalis (Güenée) eggs on the size and egg holding of three Trichogramma species. 【Method】 Under the indoor conditions of photoperiod 14L:10D and temperature 25 ± 1 ℃, the silkworm moths and Asian corn borer eggs were used as the breeding host, and the Trichogramma Trichogramma was collected at different days (12-72 h after emergence) Trichogramma dendrolimi Matsumura, Trichogramma ostriniae Pang et Chen, and Trichogramma japonicum Ashmead, respectively. The oviposition amount of the female wasp was measured and the size of the bee was measured. The amount of oviposition and its age, individual size, Relationship. 【Result】 The results showed that within 48 hours after eclosion, the number of eggs held by three kinds of bees increased with the increase of the days of female bees. At 72 h after eclosion, other combinations of Trichogramma ostriniae and Trichogramma ostriniae-oviparous Trichogramma larvae were found to descend at 48 h after eclosion. The number of ovipositing of Trichogramma ostriniae when the Asian corn borer was used as the host was significantly higher than that of the corresponding larvae with the moth egg being the host for breeding, whereas Trichogramma ostriniae (except 12 and 24 after eclosion h) and the opposite sexes of Ochratoptera: Ochotona sinensis is the opposite; when the moth egg is the host for breeding, Trichogramma dendrolimi has the highest amount of eggs in the Trichogramma at the same age, Asian corn borer eggs for the breeding of the host, Trichogramma ostriniae the highest number of eggs, Trichogramma larvae hold the lowest amount of eggs. The fecundity of females was positively correlated with the size of females, and the correlation was more obvious with the increase of females’ days. 【Conclusion】 The length of hind tibia can be used as an index to evaluate Trichogramma ostriniae and Trichogramma ostriniae. Trichogramma larvae are significantly affected by the breeding host, Trichogramma species and female day, and the host’s suitability also affects the size of Trichogramma species. Screening suitable breeding hosts will help to improve Trichogramma the quality of.