红脉穗螟寄生蜂寄主选择研究  

Study on host choice of Tirathaba rufivena (Walker) parasitic wasp

作　　者：吕朝军 钟宝珠 李朝绪[1] 凌青 张楚毓 赵建超 Lü Chaojun;ZHONG Baozhu;LI Chaoxu;LING Qing;ZHANG Chuyu;ZHAO Jianchao(Coconut Research Institute,Chinese Academy of Tropical Agricultural Sciences,Hainan Key Laboratory of Tropical Oil Crops Biology,Wenchang,Hainan 571339,China)

机构地区：[1]中国热带农业科学院椰子研究所,海南省热带油料作物生物学重点实验室,海南文昌571339

出　　处：《生物安全学报》2022年第2期146-150,共5页Journal of biosafety

基　　金：海南省重大科技计划项目(zdkj201817)。

摘　　要：【目的】优化红脉穗螟寄生蜂繁育技术,为该虫的生物防治提供参考。【方法】通过室内饲养研究了红脉穗螟幼虫寄生蜂褐带卷蛾茧蜂和蛹寄生蜂周氏啮小蜂(海南种)对4种昆虫的寄生效果,并对最佳接种比例进行筛选。【结果】褐带卷蛾茧蜂对大蜡螟幼虫寄生效果优于米蛾幼虫,且对黄粉虫和大麦虫幼虫不表现寄生特性,褐带卷蛾茧蜂和大蜡螟幼虫的最佳接种比例为1∶1和2∶1,其中在2∶1接种比例处理中的寄生率和单寄主产蜂量分别为76.67%和34.60头;4种昆虫蛹均可用于繁育周氏啮小蜂,从寄主的繁育成本和寄生效果分析,以黄粉虫蛹效果较最佳,接种蜂虫比以2∶1为宜,此时的单寄主产蜂量为148.60头。【结论】寄主和接种比例不同会影响寄生蜂的寄生效果,本研究中褐带卷蛾茧蜂适宜寄主为大蜡螟,最优蜂虫比为1∶1和2∶1,周氏啮小蜂(海南种)适宜寄主为黄粉虫,最优接种蜂虫比为2∶1。【Aim】The aim of this study was to optimize the breeding technology of parasitic wasps to provide a reference for the biocontrol of Tirathaba rufivena.【Method】The parasitic effects of the pupae parasitic wasp,Chouioia cunea(Hainan population)and the larval parasitic wasp,Bracon adoxophyesi,on four kinds of insects were studied in the laboratory,and the best inoculation proportion of wasp and host was also screened.【Result】B.adoxophyesi showed a better parasitic effect in Galleria mellonella larva than in Corcyra cephalonica and exhibited no parasitism to Tenebrio molitor and Zophobas atratus.The best inoculation proportion between B.adoxophyesi and G.mellonella larva was 1∶1 and 2∶1.The parasitic ratio and offspring produced by G.mellonella larvae were 76.67%and 34.60%in proportion of 2∶1,respectively.All pupae of the host assessed could be used to rear C.cunea with the best parasitic effect in T.molitor,considering the host rear cost and parasitic effect.The inoculation proportion of 2∶1 C.cunea to T.molitor led to 148.60.【Conclusion】The difference in host and inoculation proportion could influence the parasitic effects,the most suitable host for B.doxophyesi was G.mellonella,and the appropriate inoculation proportion of wasp and host was 1∶1 and 2∶1;while for C.cunea,the recommended host was T.molitor at a proportion of 2∶1.

关 键 词：红脉穗螟 寄生蜂 寄主选择 接种比例 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]