农学学报2025，Vol.15Issue(5)：29-35,7.
5种不同作物对草地贪夜蛾生长发育和适合度的影响
Effects of Five Different Crops on Development and Fitness of Spodoptera frugiperda
摘要
Abstract
The study aimed to clarify the host fitness and potential damage of the major invasive insect of Spodoptera frugiperda to different crops besides maize,providing a scientific basis for damage risk assessment of host shift and the population monitoring of the pest.The effects of individual development,survival rate and fecundity of S.frugiperda fed on different crops of pepper,tomato,sugarcane,coix and ginger were determined indoors,and then were compared and analyzed with maize as the control.Furthermore,fitness of S.frugiperda on various crops was evaluated based on the population growth trend index(I).The results showed that the adaptability of S.frugiperda on different crops was declined significantly compared with the preferable host of maize.The effects of five different crops on S.frugiperda mainly manifested as the developmental duration prolonged,survival rate reduced,pupal weight and the adults emergence rate declined,the shorter longevity of adults,less average eggs laid per female and lower egg hatching rate.Pepper exhibited the most adverse impact on S.frugiperda,such as the larval duration,larval survival rate,pupal weight and female longevity of the pest fed on pepper were 37.40 d,18.52%,0.1130 g and 5.25 d,respectively,while those on maize were 16.52 d,92.59%,0.2178 g and 11.74 d,respectively.The results showed that S.frugiperda feeding on pepper could not finish its life cycle.Although the S.frugiperda could develop normally and completed its whole life cycle fed on tomato,sugarcane,coix and ginger,but the relative fitness wasonly 0.023,0.107,0.112 and 0.130,respectively.The population growth trend index(I)of S.frugiperda feeding on maize was 226.38.In conclusion,maize is the most preferable host for S.frugiperda.The crops of tomato,sugarcane,coix and ginger are not the suitable hosts for population reproduction of S.frugiperda.However,S.frugiperdas till can complete its life cycle by feeding on its young leaves,indicating its potential hazard risk,and the risk of pepper is minimal.关键词
入侵害虫/草地贪夜蛾/寄主/适合度/作物Key words
invasive pest/Spodoptera frugiperda/host/fitness/crop分类
农业科技引用本文复制引用
邱良妙,刘其全,陈秀琴,卢学松,刘必炮,何玉仙..5种不同作物对草地贪夜蛾生长发育和适合度的影响[J].农学学报,2025,15(5):29-35,7.基金项目
中央引导地方科技发展资金项目"重大农业钻蛀性害虫智能监测及诱控技术研究与应用"(2023L3059) （2023L3059）
福建省公益类基本科研专项"草地贪夜蛾天敌资源的挖掘与评估"(2021R1024007) （2021R1024007）
福建省"5511"协同创新工程项目"优势特色农作物重大病虫害绿色防控关键技术研发与应用"(XTCXGC2021011) （XTCXGC2021011）
福建省农业科学院科技创新团队项目"农作物重大有害生物灾变机制与绿色防控科技创新团队"(CXTD2021002-1). （CXTD2021002-1）
