论文部分内容阅读
观察研究了以米蛾卵和亚洲玉米螟卵为寄主时 ,玉米螟赤眼蜂 (Trichogrammaostriniae)、拟澳洲赤眼蜂(T confusum)、松毛虫赤眼蜂 (T dendrolimi)等 3种赤眼蜂的寄生发生及羽化情况。结果发现 :以米蛾卵为寄主时 ,3种赤眼蜂的寄生发生率均为 10 0 % ,其中寄生卵粒数、子代蜂数及子代蜂的羽化率以松毛虫赤眼蜂最高 ;蜂的死亡率以玉米螟赤眼蜂最高 ,达 10 4 2 % ,且死于预蛹期以前的蜂所占比例显著高于拟澳洲赤眼蜂和松毛虫赤眼蜂。以亚洲玉米螟卵为寄主时 ,玉米螟赤眼蜂的寄生发生率和寄生卵粒数显著高于其它两种蜂 ,松毛虫赤眼蜂的寄生发生率显著低于其它两种蜂。可以认为 ,亚洲玉米螟卵是玉米螟赤眼蜂的适宜寄主 ,是拟澳洲赤眼蜂的次适寄主 ,是松毛虫赤眼蜂的不适寄主。
Trichogramma ostriniae, T confusum, T dendrolimi and other Trichogramma species were observed and studied with the moth eggs and the Asian corn borer eggs as hosts. Parasitic and eclosion conditions. The results showed that the parasitism rates of the three species of Trichogramma were 10 0% when the moth eggs were host, and the parasitic eggs, the number of offspring and the emergence rate of offspring were the highest The death rate of bees was the highest among Trichogramma ostriniae (104.2%), and the proportion of bees before pre-pupal stage was significantly higher than that of Trichogramma ostrich and Tricholoma matsutake. Parasitism and parasitoid eggs of Trichogramma ostriniae were significantly higher than those of the other two species when the Asian corn borer eggs were used as hosts. The parasitic incidence of Trichogramma trichogramma was significantly lower than that of the other two species. It can be considered that the Asian corn borer eggs are the suitable host of the Trichogramma ostriniae, the second suitable host of the Trichogramma ostriniae, and the host of Trichogramma dendrolimi.