当前位置: X-MOL 学术Crop Prot. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Demographic analysis of the biological parameters of Spodoptera frugiperda after sublethal exposure to insecticides
Crop Protection ( IF 2.8 ) Pub Date : 2024-03-07 , DOI: 10.1016/j.cropro.2024.106647
Lulu Lin , Minghui Xie , Yongzhi Zhong , Guangling Zhang , Feng Zhang , Haoliang Chen

(JE Smith) is one of the most destructive pests, causing serious yield losses of corn on all continents except Europe. Low-lethal concentrations of insecticides may affect not only the survival rate but also the demographic parameters of a pest. To understand the effect of low-lethal concentrations of insecticides on , the developmental parameters after low-lethal concentrations treatment by three different modes of action pesticides tetrachloroamide, spinetoram, and lufenuron were analyzed. For F0 generation, the pupal length and weight of FAW after insecticide treatment were significantly longer and heavier than that of control. For the F1 generation, the adult longevity and egg hatching rate after spinetoram and lufenuron treated was significantly shorter and lower than that of the control. While no significant effect was observed for the intrinsic rate of increase (), finite rate of increase (λ), and mean generation time (T) of , the net reproductive rate () significant decreased after the spinetoram and lufenuron treatment. Results showed tetrachloroamide, spinetoram, and lufenuron negatively affect larval survival rate, but spinetoram and lufenuron caused early maturity, and all three insecticide treatments increased egg reproduction. The results of this study suggest that low-lethal concentration exposure to insecticides negatively impacts the life table parameters of , and those three insecticides from different modes of action cannot cause FAW resurgence and can be recommended as insecticides to control FAW. Those results will be helpful for researchers working on management using chemical pesticides in an integrated pest management program.

中文翻译:

亚致死接触杀虫剂后草地贪夜蛾生物学参数的人口统计学分析

(JE史密斯)是最具破坏性的害虫之一,在除欧洲以外的所有大陆上造成玉米严重减产。低致死浓度的杀虫剂不仅会影响害虫的存活率,还会影响害虫的人口统计参数。为了了解低致死浓度杀虫剂对 的影响,我们分析了三种不同作用方式的杀虫剂四氯酰胺、乙基多杀菌素和虱螨脲低致死浓度处理后的发育参数。对于F0代,经杀虫剂处理后的秋粘虫的蛹长度和重量均显着比对照更长和更重。对于F1代,经乙基多杀菌素和虱螨脲处理后,成虫寿命和卵孵化率均显着缩短并低于对照。虽然对内在增长率 ()、有限增长率 (λ) 和平均世代时间 (T) 没有观察到显着影响,但在乙基多杀菌素和虱螨脲治疗后,净繁殖率 () 显着下降。结果显示,四氯酰胺、乙基多杀菌素和虱螨脲对幼虫存活率产生负面影响,但乙基多杀菌素和虱螨脲导致早熟,并且所有三种杀虫剂处理都增加了卵的繁殖。本研究结果表明,低致死浓度的杀虫剂暴露会对秋粘虫的生命表参数产生负面影响,这三种不同作用方式的杀虫剂不会导致秋粘虫死灰复燃,可以推荐作为防治秋粘虫的杀虫剂。这些结果将有助于研究人员在综合害虫管理计划中使用化学农药进行管理。
更新日期:2024-03-07
down
wechat
bug