寄主虫龄和蜂虫比对麦蛾茧蜂繁殖效率的影响.PDF

安徽农业大学学报, 2016, 43(3): 457-461 Journal of Anhui Agricultural University [DOI] 10.13610/ki.1672-352x001 网络出版时间：2016-5-12 15:49:46 [URL] /kcms/detail/34.1162.S1549.002.html 寄主虫龄和蜂虫比对麦蛾茧蜂繁殖效率的影响 黄衍章，唐庆峰，蒋兴川，缪 勇 (安徽农业大学植物保护学院，合肥 230036) 摘 要：以印度谷螟幼虫为寄主，研究了不同寄主虫龄和蜂虫比对麦蛾茧蜂室内种群繁殖寄生效率的影响。结 果表明，寄主虫龄越高，麦蛾茧蜂的化蛹率、羽化率、子代出蜂数及雌雄性比则越高。当麦蛾茧蜂与印度谷螟 5 龄幼虫按 6 （对）︰20 （头）接入时，麦蛾茧蜂的子代羽化成蜂数最多（87.5 头），且雌蜂比例最大。室内寄生防 治试验表明，当蜂虫比为 20 （对）︰100 （头）时，麦蛾茧蜂对印度谷螟4 龄幼虫的寄生率高达 95.4%。本研究结 果说明麦蛾茧蜂是防治印度谷螟等鳞翅目储粮害虫的优良天敌。 关键词：麦蛾茧蜂；印度谷螟；寄主虫龄；蜂虫比 中图分类号：S476.3 文献标识码：A 文章编号：1672−352X (2016)03−0457−05 Effects of host instar and ratio of wasp to pest on the propagation and parasitic efficiency of Habrobracon hebetor (Say) HUANG Yanzhang, TANG Qingfeng, JIANG Xingchuan, MIAO Yong (School of Plant Protection, Anhui Agricultural University, Hefei 230036) Abstract: The propagation and parasitic efficiency of Habrobracon hebetor (Say) to Plodia interpunctella (Hübner) larvae was researched by setting several host instars and ratios of wasp to pest. Results indicated that the older, the host larvae, the higher, the pupation rate, the emergence rate, the offspring adults and the ratio of female to th male. The number of emergence adult wasp was up to 87.5 when the ratio of H. hebetor to 5 instar larvae of P. in- terpunctella was 6 (pairs) to 20, and the percentage of offspring female adults reached the top. The control efficiency th th of H. hebetor to 4 instar larvae of P. interpunctella was 95.4% after 20 pairs of H. hebetor adult wasps and 100 4 i