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松毛虫卵期几种寄生蜂的共寄生现象及其对寄生率的影响
引用本文:倪乐湘,童新旺.松毛虫卵期几种寄生蜂的共寄生现象及其对寄生率的影响[J].昆虫学报,1994,37(2):145-152.
作者姓名:倪乐湘  童新旺
摘    要:松毛虫赤跟蜂 Trichogramma dendrolimi Matsumura 白跗平腹Pseudanastatusalbitarsis Ashmead松毛虫宽缘金小蜂Pachyneuron olitarium(Harig), 松毛虫黑卵蜂 Telenomus dendrolimusi Chu和大蛾卵跳小蜂Ooenvyrtus Kuwanae(Howard)是松毛虫卵期几种主要寄生蜂。通过对上述几种寄生蜂寄生习性的研究表明:赤眼蜂和平腹小蜂不但能寄生新鲜害虫卵,还可以寄生对方已寄生并巳发育1-3天的寄生卵,但羽化串均不高;松毛虫宽缘金小蜂不寄生新鲜害虫卵,专门寄生赤眼蜂寄生后巳发育1-7,天的寄生卵,其中又以赤眼蜂发育3-5天的卵寄生串和羽化率为最高。除赤眼蜂和平腹小蜂可以混合使用外,其它蜂种混用都不同程度地存在相互排挤的现象。如果先让平腹小蜂寄生尔后再让赤眼蜂寄生或先让赤眼蜂寄生,尔后再让跳小蜂或黑卵蜂寄生,能够提高卵块寄生串和充分发挥各自天敌的作用。

关 键 词:松毛虫  寄主卵  共寄生  寄生虫  

INFLUENCE OF MULTIPARASITISM OF EGG PARASITOIDS OF PINE LASIOCAMPIDS ON EFFICACY OF BIOLOGICAL CONTRO
NI LE-XIAGN,TONO XIN-WANG,LAO XIAN-MIN.INFLUENCE OF MULTIPARASITISM OF EGG PARASITOIDS OF PINE LASIOCAMPIDS ON EFFICACY OF BIOLOGICAL CONTRO[J].Acta Entomologica Sinica,1994,37(2):145-152.
Authors:NI LE-XIAGN  TONO XIN-WANG  LAO XIAN-MIN
Abstract:Trichogramma dendrolimi Matsumura, Pseudanastatus albitarsis Ashmead, Pachyneuron nawai Ashmead, Telenomus dendrolimusi Chu and Ooencyrtus kuwanae (Howard) are the main egg parasitoids of the pine lasiocampids. A research has been conducted on the habits of parasitism of these parasitoids and the results are summarized as follows. There existed reciprocal parasitism between Trichogramraadendrolimi and Pseudanastatus albitarsis. They usually attacked the fresh host eggs, but they also parasitized the eggs that had been parasitized by the other species. In the latter case, the non-cogeneric embryo could develop for 1 to 3 days but the rate of adult emergence was very low. On the other hand, Pachyneuronnawai did not parasitize fresh host egg; it only parasitized eggs that had been parasitized by Trichogramma spp. Whose embryo developed for I to 7 da s. The parasitization rate and adult emergence of this species were the highest when the non-cogeneric embryo had developed for 3 to 5 days. Telenomus dendrolimusiand Ooencyrtus kuwanae, however, only parasitized fresh host eggs. During biological control of pine lasiocampids, only Trichogramma dendrolimi and Pseudanastatusalbitarsis could be released at the same time; the mixed release of other parasitoidswould result in antagonism. If the host egg masses were first arasitized by Fseudanastatus albitarsis and later by Trichogramma dendrolimi or first parasitized by Trichogramma dendrolimi and later by Telenomus dendrolimusi or Ooencyrtus kuoanae, the rate of parasitization would become higher and thus would result in better effect in controlling the pest.
Keywords:pine lasiocampid——egg parasitoid——multiparasitism——rate of  parasitizatiou
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