Department of Entomology, University of Arid Agriculture Rawalpindi Rawalpindi Punjab Pakistan.
Department of Entomology, Faculty of Agriculture, University of Poonch Rawalakot Azad Jammu & Kashmir Pakistan.
PeerJ. 2023 Aug 14;11:e15745. doi: 10.7717/peerj.15745. eCollection 2023.
The leaf worm, (Fabricius) (Lepidoptera: Noctuidae) is a notorious insect pest of many economically important cultivated crops like cotton, maize, tobocco and vegetables causing severe economic losses from 50-100%. In most crops, damage arises due to voracious feeding by the larvae and leads to the skeletonizing of leaves. Toxicological studies were performed to estimate lethal and sublethal levels of flubendiamide and spirotetramat against . Effects of these estimated values were assessed on different biological traits of including life duration, survival and next generation potential. Both flubendiamide and spirotetramat showed toxic responses against second instar larvae of under laboratory conditions. Larval duration and survival rate of to were significantly different. Exposure to test insecticides resulted in negative effect on the demography of as longer life cycle and decreased fecundity. Changes in net reproductive rate and intrinsic rate of increase also helped to decide the fate of these insecticides. Low reproductive potential and low hatching percentage due to exposure to test insecticides can help to manage next generation of target pest. These two new chemistry insecticides can be recommended for their effective and long-term utilization against this important leaf feeder which may help its management and decrease economic losses faced by the growers. Their impact on larval duration and low survival rate at lethal levels guides about their potential in pest control.
棉铃虫，（Fabricius）（鳞翅目：夜蛾科）是许多重要经济作物如棉花、玉米、烟草和蔬菜的著名害虫，造成 50-100%的严重经济损失。在大多数作物中，幼虫的贪婪取食导致叶片被镂空，从而造成损害。进行了毒理学研究，以估计氟苯虫酰胺和螺虫乙酯对的致死和亚致死水平。评估了这些估计值对包括寿命、存活率和下一代潜力在内的不同生物学特征的影响。在实验室条件下，氟苯虫酰胺和螺虫乙酯对 2 龄幼虫均表现出毒性反应。对棉铃虫的幼虫持续时间和存活率有显著影响。接触测试杀虫剂对昆虫的种群动态有负面影响，表现为生命周期延长和繁殖力降低。净生殖率和内禀增长率的变化也有助于决定这些杀虫剂的命运。由于接触测试杀虫剂，繁殖潜力降低和孵化率降低有助于管理目标害虫的下一代。这两种新的化学杀虫剂可以因其对这种重要的食叶害虫的有效和长期利用而得到推荐，这有助于对其进行管理并减少种植者面临的经济损失。它们对幼虫持续时间和致死水平下低存活率的影响表明了它们在害虫防治方面的潜力。
