南方农业学报2023，Vol.54Issue(11)：3247-3255,9.DOI:10.3969/j.issn.2095-1191.2023.11.012
夜蛾黑卵蜂对草地贪夜蛾的控害潜能研究
Evaluation of potential control ability of Telenomus remus Nixon against Spodoptera frugiperda(Smith)
摘要
Abstract
[Objective]Evaluation of potential control ability of Telenomus remus Nixon in Nanning,Guangxi against Spodoptera frugiperda(Simth)was explored to provide the theoretical basis for a large number of artificial breeding of T.remus and application in field biological control.[Method]Under the conditions of temperature of(28±1)℃,and a rela-tive humidity of(75±7)%,a photoperid of L∶D = 14 h∶10 h,the experimental population life tables of S.frugiperda and T.remus were established respectively to evaluate the Parasitic functional response of T.remus on S.frugiperda.The T.re-mus were released in the corn field 7 d interval,for 3 times according to the parasitoid-host ratio of 1:10.The parasitism rate of S.frugiperda eggs was investigated.[Result]The results showed that the parameters of S.frugiperda were as fol-lows:net reproduction population trend index(R0)of 137.32,intrinsic rate of increase(rm)=0.1356,finite rate of in-crease(λ)of 1.1452,average generation time(T)of 36.31 d.The parameters of S.frugiperda were as follows:R0= 97.11,rm=0.4464,λ=1.5627,T=10.25 d.The comparison of life table parameters between S.frugiperda and T.remus showed that the average generation duration of S.frugiperda was about 3 times as that of T.remus.T.remus had a strong reproductive advantage in controlling S.frugiperda.The parasitism response to S.frugiperda eggs was consistent with Hol-ling Ⅱ model,with instantaneous attack rate(a′)=0.9979,treatment time(Th)=0.0057,and maximum parasitism(Namax)=174.1 egg/d.The results of field experiment showed that the S.frugiperda parasite rate of egg mass was 100.00%,and the parasite rate of egg was significantly increased with the increase of T.remus release times(P<0.05).After 3 times of consecutive T.remus releases,the parasite rate of egg was 70.63%.[Conclusion]T.remus has strong para-sitism ability on the eggs of S.frugiperda and high reproduction rate,and has strong control potential on S.frugiperda population.关键词
夜蛾黑卵蜂/草地贪夜蛾/生命表/功能反应/控制潜能Key words
Telenomus remus Nixon/Spodoptera frugiperda(Simth)/life table/functional response/control po-tential分类
农业科技引用本文复制引用
刘丽辉,邓铁军,龙秀珍,劳水兵..夜蛾黑卵蜂对草地贪夜蛾的控害潜能研究[J].南方农业学报,2023,54(11):3247-3255,9.基金项目
广西自然科学基金项目(2019GXNSFBA245004,2022GXNSFAA035592) Guangxi Natural Science Foundation(2019GXNSFBA245004,2022GXNSFAA035592) （2019GXNSFBA245004,2022GXNSFAA035592）
