温度对食胚赤眼蜂寄生、羽化和寄主选择的影响  

Effect of Temperature on the Parasitism, Emergence and Host Selection of Trichogramma embryophagum

作　　者：白雪萍 葛亚菲 张悦 赵倩 陈婉莹 吴倩男 赵长江 张海燕 BAI Xueping;GE Yafei;ZHANG Yue;ZHAO Qian;CHEN Wanying;WU Qiannan;ZHA0Changjiang;ZHANG Haiyan(College of Agriculture,Heilongjiang Bayi Agricultural University/Heilongjiang Engineering Technology Research Center for Crop Straw Utilization/Heilongjiang Resistance Monitoring Centre for Crop Pest,Daqing 163319,China)

机构地区：[1]黑龙江八一农垦大学农学院/黑龙江省秸秆资源化利用工程技术研究中心/黑龙江省农作物病虫抗性监测中心,大庆163319

出　　处：《中国生物防治学报》2018年第6期927-931,共5页Chinese Journal of Biological Control

基　　金：黑龙江省大学生创新创业项目(201610223039);黑龙江省自然科学基金(C2015039);国家自然科学基金(31301717)

摘　　要：对孤雌产雌的食胚赤眼蜂Trichogramma embryophagum Hartig进行25、28、30和35℃不同温度处理,统计F1、F2及F3代的寄生、羽化和性比,同时测定不同温度下食胚赤眼蜂对寄主米蛾卵的选择。结果表明,不同温度处理后,孤雌产雌食胚赤眼蜂的寄生数及雌蜂数随温度升高而下降,且随处理代数增加呈下降趋势。25～35℃下,单雌寄生数在F1代为64.3～69.6粒,而F3代在30和35℃仅为17.4和20.33粒。高温处理后,产雌孤雌生殖的食胚赤眼蜂出现雄蜂,雄蜂率随温度及处理代数增加而显著增加,在F2代35℃下雄蜂率达到了66.17%。温度对食胚赤眼蜂寄主选择有显著影响,在20～30℃寄主选择所用的时间随着温度的升高而缩短,与供试其他温度相比,30℃下赤眼蜂能够做出寄主选择且选择寄主的蜂数最多。研究结果为孤雌产雌赤眼蜂的生防应用提供理论指导。The thelytoky Trichogramma embryophagum (Hartig)was treated to different temperatures,including 25,28,30and 35℃,to measure their parasitism,emergence,sex ratio,and preference for rice moth eggs in the F1, F2 and F3 generations.The results showed that parasitism and the number of female offsprings decreased with the increase of temperature and with the increase of generations.The parasitism per female was 64-69 at F1 generation,but decreased to 17.4 at 30℃ and 20.33 at 35℃,respectively,at F3 generation.After high temperature treatment,male offsprings emerged in the population,whose number increased with the increase of temperature and generation number.For example,the male offsprings in F2 accounted for 66.17% at 35℃. Between 20and 30℃,the time needed for host location in the wasp varied with temperature,reduced with increasing temperature.The results are of theoretical significance for biological control using the thelytoky wasp.

关 键 词：食胚赤眼蜂 温度 孤雌产雌 寄主选择 

分 类 号：S476-3[农业科学—农业昆虫与害虫防治]