Wheat (Triticum aestivum L.) is cultivated as a monocotyledonous plant in a large part of the world. The Wheat aphid, Schizaphis graminum Rondani (Hemiptera: Aphididae), is among the most important pests of wheat. One of the most important predators of this pest is Hippodamia variegata Goeze. Considering the use of insecticide spirotetramat in cereal fields, in this study, the lethal and sub-lethal effects of this insecticide were investigated on the biological characteristics and parameters of the life table of S. graminum and predator H. variegata. The experiments were performed at a temperature of 27 ± 1℃, relative humidity of 65 ± 10%, and a photoperiod of 16:8 (light:dark). For this purpose, biometric and life table experiments were performed by immersing wheat leaves in insecticide and placing adult aphids on them, and feeding adonis ladybird larvae from the treated aphids. Insecticide side effects were estimated using the International Organization for Biological Control (IOBC) method and a two-sex life table. The LC₅₀ level of spirotetramat insecticide for aphids and predators was 210.93 and 725.86 mg/l, respectively. The results of this study indicate that there is a significant difference between treatments in terms of the intrinsic rate of increase (r), finite rate of increase (λ), mean generation times (T), net reproduction rate (R₀), and gross reproduction rate (GRR) parameters in aphids and adonis ladybird. The highest and lowest rates of the reproduction and population growth of the studied insects were related to the control and LC₃₀ spirotetramat treatments, respectively. According to the IOBC classification, the concentration of LC₁₀ in spirotetramat was harmless to the adonis ladybird H. variegata, while the LC₃₀ concentration of this insecticide was slightly harmful to this species. Experiments showed that the sub-lethal concentrations of the insecticide spirotetramat had a significant negative effect on the life table parameters of the Wheat aphid.

小麦（Triticum aestivum L.）在世界大部分地区作为单子叶植物种植。小麦蚜虫Schizaphis graminum Rondani（半翅目：蚜科）是小麦最重要的害虫之一。这种害虫最重要的捕食者之一是Hippodamia variegata Goeze。本研究结合杀虫剂螺虫乙酯在谷田的使用情况，研究了该杀虫剂对禾谷螨和捕食者斑叶螨的生物学特性和生命表参数的致死和亚致死作用。实验条件为：温度27±1℃，相对湿度65±10%，光周期16：8（亮：暗）。为此，进行了生物测定和生命表实验，将小麦叶子浸入杀虫剂中，并将成年蚜虫放在上面，并用处理过的蚜虫喂养阿多尼斯瓢虫幼虫。使用国际生物控制组织（IOBC）方法和两性生命表估算杀虫剂副作用。螺虫乙酯杀虫剂对蚜虫和捕食者的LC ₅₀水平分别为210.93 和725.86 mg/l。本研究结果表明，处理之间在内在增长率（r）、有限增长率（λ）、平均世代次数（T）、净繁殖率（R ₀）和蚜虫和阿多尼斯瓢虫的总繁殖率（GRR ）参数。所研究昆虫的最高和最低繁殖率和种群增长率分别与对照和 LC ₃₀螺虫乙酯处理有关。根据IOBC分类，螺虫乙酯中的LC _{10浓度对阿多尼斯瓢虫}H. variegata无害，而该杀虫剂的LC ₃₀浓度对该物种有轻微危害。实验表明，杀虫剂螺虫乙酯的亚致死浓度对小麦蚜虫的生命表参数有显着的负面影响。