草地贪夜蛾蛹寄生蜂——霍氏啮小蜂生物学特性  

Biological Characteristics of Tetrastichus howardi, a Parasitoid of Spodoptera frugiperda

作　　者：苏豪 吕宝乾[2] 张宝琴[1] 吴琦琦 卢辉[2] 唐继洪[2] 吴晓霜 SU Hao;LU Baoqian;ZHANG Baoqin;WU Qiqi;LU Hui;TANG Jihong;WU Xiaoshuang(College of Plant Protection,Hainan University,Haikou 570228,China;Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,China)

机构地区：[1]海南大学植物保护学院,海口570228 [2]中国热带农业科学院环境与植物保护研究所,海口571101

出　　处：《中国生物防治学报》2021年第3期406-411,共6页Chinese Journal of Biological Control

基　　金：海南省自然科学基金创新研究团队项目(2019CXTD409);国家重点研发计划(2019YFD03001);农业部国际交流与合作项目(BARTP-08-LBQ);中国热带农业科学院基本科研业务费专项(1630042017011)。

摘　　要：草地贪夜蛾是2019年初入侵我国的重要农业害虫,国外对草地贪夜蛾的生物防治技术研究较深入,报道较多的是寄生性天敌,霍氏啮小蜂是其重要的蛹期寄生性天敌。为探明不同糖源和不同温度条件下霍氏啮小蜂对草地贪夜蛾的生防潜力,本研究比较了不同糖源和不同温度对霍氏啮小蜂发育的影响。结果表明,蜂蜜、蔗糖、葡萄糖均能显著延长霍氏啮小蜂雌、雄蜂寿命,寿命延长皆在10 d以上,且与对照相比,出蜂量及寄生率也显著提高。在26℃时,该蜂寄生率可达72.67%;在18℃,雌、雄蜂寿命分别可达42 d和24 d。其世代发育起点温度为10.9℃,有效积温273.49日·度。高温(高于32℃)和低温(低于18℃)下,该蜂寄生率下降明显。综合各个参数,在26℃~30℃繁殖该蜂效率显著高于其他温度,可作为室内繁蜂的适宜温度。研究结果对霍氏啮小蜂繁育及利用其对草地贪夜蛾进行生物防治具有一定的意义。Spodoptera frugiperda invaded China in early 2019.The biological control of S.frugiperda has been extensively studied in foreign countries,and parasitic natural enemies are most reported.Tetrastichus howardi is one of the important parasitic wasps infesting pupal stage of S.frugiperda.To clarify the biocontrol potential of the wasp,the effects of different sugar sources and temperatures on T.howardi were compared.The results showed that honey,sucrose and glucose significantly prolonged the lifespan of female and male wasp adults by more than 10 days.Compared to the control,the offspring numbers and parasitism rate also significantly increased.At 26℃,the parasitism rate reached 72.67%;while at 18℃,the life span of female and male wasps were 42 d and 24 d,respectively.The generation developmental threshold temperature was 10.9℃,and the effective accumulated temperature was 273.49 days·℃.High temperature(above 32℃)and low temperature(below 18℃)shortened the parasitism rate.Considering all the parameters,26℃-30℃is the optimal temperature for indoor rearing the wasp.These results are significant for mass rearing of the wasp and biological control of S.frugiperda.

关 键 词：霍氏啮小蜂 草地贪夜蛾 生物防治 营养 温度 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]