Effects of temperature on baseline susceptibility and stability of insecticide resistance against Plutella xylostella (Lepidoptera: Plutellidae) in the absence of selection pressure

文献类型： 外文期刊

第一作者： Jaleel, Waqar

作者： Jaleel, Waqar;Jaleel, Waqar;Saeed, Shafqat;Ishtiaq, Muhammad;Qayyum, Mirza Abdul;Ahmed, Furqan;Naqqash, Muhammad Nadir;Sial, Muhammad Umair;Ali, Muqarrab;Zaka, Syed Muhammad;Sarwar, Zahid Mahmood;Ul Aine, Qurat;Sarmad, Muhammad;Anwar, Adeel;Azad, Rashid;Latif, Muhammad;Islam, Waqar;Islam, Waqar;Islam, Waqar;Khan, Khalid Ali;Ghramh, Hamed A.;Khan, Khalid Ali;Ghramh, Hamed A.;Khan, Khalid Ali;Ghramh, Hamed A.

作者机构：

关键词： Bt Cry1Ac; Deltamethrin; Diamondback moth; Plutella xylostella; Temperature coefficient

期刊名称：SAUDI JOURNAL OF BIOLOGICAL SCIENCES （ 影响因子：4.219； 五年影响因子：4.432 ）

ISSN： 1319-562X

年卷期： 2020 年 27 卷 1 期

页码：

收录情况： SCI

摘要： Plutella xylostella L. (Lepidoptera: Plutellidae) is an important pest causing significant losses to vegetables worldwide. Insecticides resistance in P. xylostella is a serious issue for scientists since last 30 years. However, deltamethrin and Bt Cry1Ac are commonly used insecticides against P. xylostella but studies involving development of resistance in P. xylostella against these two insecticides at different temperatures are lacking. The current study was aimed to find out the toxicity of deltamethrin and Bt Cry1Ac, and resistance development in P. xylostella. Results showed that the positive correlation between the temperature and toxicities of deltamethrin and Bt Cry1Ac. The results indicated -0.051, -0.049, -0.047, and -0.046 folds of deltamethrin resistance at 15 degrees C, 20 degrees C, 25 degrees C, and 30 degrees C temperatures, respectively from 1st to 12th generations. The toxicity of Bt Cry1Ac after 24 h was 2.2 and 4.8 folds on 1st generation at 20 degrees C and 25 degrees C temperatures, respectively compared to the toxicity recorded at 15 degrees C (non-overlapping of 95% confidence limits). Based on the results of this study, it is concluded that the temperature has a positive correlation with the toxicity of deltamethrin and Bt Cry1Ac against the larvae of P. xylostella. This study suggests that deltamethrin and Bt Cry1Ac can be included in the management program of P. xylostella on many vegetable crops. The baseline susceptibility data might be helpful to understand the resistance mechanisms in P. xylostella. (C) 2019 Production and hosting by Elsevier B.V. on behalf of King Saud University.

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