Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (3): 755-763.DOI: 10.1016/S2095-3119(20)63476-1

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  • 收稿日期:2020-06-09 出版日期:2021-03-01 发布日期:2021-02-18

Fitness of fall armyworm, Spodoptera frugiperda to three solanaceous vegetables

WU Li-hong1, ZHOU Cao1, LONG Gui-yun1, YANG Xi-bin1, WEI Zhi-yan1, LIAO Ying-jiang1, YANG Hong1, 2, 3, HU Chao-xing1, 3 
  

  1. 1 Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang 550025, P.R.China
    2 College of Tobacco Science, Guizhou University, Guiyang 550025, P.R.China
    3 Scientific Observing and Experimental Station of Crop Pests in Guiyang of Ministry of Agriculture and Rural Affairs, Guiyang 550025. P.R.China
  • Received:2020-06-09 Online:2021-03-01 Published:2021-02-18
  • Contact: Correspondence YANG Hong, E-mail: axyridis@163.com; HU Chao-xing, E-mail: hcx333@foxmail.com
  • About author:WU Li-hong, E-mail: Lihongwu2020@126.com;
  • Supported by:
    The authors would like to thank Yuan Min, a graduate student majoring in plant protection at Guizhou University, for providing guidance on making figures. This work was supported by the Science and Technology Program of Guizhou Province, China ([2019]2412), and the Basic Research Program (Science and Technology) of Guizhou Province, China ([2020]1Z021).

摘要:

草地贪夜蛾是一种重大农业害虫,于2018年12月中旬入侵中国。作为一种杂食性害虫,草地贪夜蛾对我国农业生产和粮食安全造成严重威胁。辣椒、番茄和茄子是我国3种重要的茄科蔬菜。本研究评估了草地贪夜蛾在辣椒、番茄和茄子上的适应性。结果表明,以番茄和辣椒为食时,草地贪夜蛾能完成生活史,以茄子为食则不能完成生活史。采用年龄-阶段两性生命表比较了草地贪夜蛾取食玉米和3种茄科蔬菜的种群参数差异。结果表明:(1)发育历期在幼虫期差异显著,蛹期差异不显著;(2)取食辣椒的草地贪夜蛾成虫前期最长(41.73 d)、蛹重最轻(0.1134 g);(3)雌虫平均单雌产卵量差异显著,其中以取食番茄的单雌产卵量最高(943.95粒);(4)取食玉米时,草地贪夜蛾的平均世代周期最短、内禀增长率和周限增长率最高,而净增殖率则以取食番茄的为最高。总体而言,草地贪夜蛾对3种茄科蔬菜的适应性为:番茄>辣椒>茄子。本研究为进一步评估草地贪夜蛾对茄科蔬菜的危害以及为建立相应的防治措施打下了一定基础。


Abstract:

The fall armyworm (FAW), Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) is an important agricultural pest that invaded China in the middle of December 2018.  As a polyphagous pest, FAW is identified as a serious threat to agricultural production and food security in China.  Pepper (Capsicum annuum L.), tomato (Solanum lycopersicum Mill.) and eggplant (Solanum melongena L.) are three of dominant solanaceous vegetables of this country.  To our knowledge, the effects of these plants on the performances of FAW have not been well studied.  In this study we assessed the fitness of this pest to these three plants.  Results showed that FAW can complete its life cycle when fed with tomato and pepper, but not on eggplant.  The population parameters of FAW fed with maize (Zea mays L.) and the three solanaceous vegetables were compared using the age-stage, two-sex life table method.  Developmental duration was significantly different in the larval stage, but not in the pupae stage.  FAW fed with pepper had the longest pre-adult period (41.73 d) and the lightest pupal weight (0.1134 g); the survival rate was lower than FAW fed with tomato.  Significant differences were observed in the mean fecundity of female, with the highest (943.95 eggs) laid by FAW fed with tomato.  FAW had the shortest mean generation time (T), the highest intrinsic rate of increase (r) and finite rate of increase (λ) on maize, and the highest net reproductive rate (R0) on tomato.  Overall, FAW fitness on the three solanaceous vegetables was: tomato>pepper>eggplant.  This study provides the foundation for further assessment of FAW risk to solanaceous vegetables and for establishing

Key words: Spodoptera frugiperda ,  life table ,  adaptability ,  tomato ,  pepper ,  eggplant