Age-stage, two-sex life table analysis of Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) reared on maize and kidney bean

Chemical and Biological Technologies in Agriculture

Junrui Zhi¹  Dingyin Li¹  Wenbo Yue¹  Chaoxing Hu¹  Wen Xie¹  Jiaqin Ye¹  Cao Li¹  Yujian Liang¹  Guang Zeng¹  Yeming Zhou¹ 

[1] The Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, 550025, Guiyang, Guizhou Province, China;

关键词: Spodoptera frugiperda;    Life table;    Maize;    Kidney bean;    Reproduction;   

DOI  :  10.1186/s40538-021-00241-8

来源: Springer

【 摘 要 】

BackgroundSpodoptera frugiperda (JE Smith), or fall armyworm, is one of major migratory agricultural pests with a wide range of hosts. The effect of different hosts (maize and kidney bean) on the growth and reproduction of S. frugiperda were investigated using the age-stage, two-sex life table method.ResultsThe results showed that S. frugiperda could complete its entire life cycle on both hosts, albeit with significantly different development and reproduction. The durations of larval and pupal development were significantly prolonged whereas adult lifespan was shortened on kidney bean compared to maize. The differences of survival rates at each instar, prepupal and pupal stages between the two hosts were not statistically significant. The total pre-oviposition period was longer on kidney bean than that on maize (42.05 vs 39.04 days), but there was no difference in the oviposition rate (64.77 on kidney bean vs 62.48 on maize). The differences of net reproductive rate, intrinsic rate of increase and finite rate of increase were nonsignificant, while the mean generation time on kidney bean (42.05 days) was significantly longer than that on maize (40.92 days).ConclusionsThe results indicate that S. frugiperda can grow and reproduce normally on both hosts, although maize is more suitable. Nonetheless, the data show that this pest is harmful when the population density is high or when the preferred host is scarce.Graphic abstract

【 授权许可】

CC BY