Monitoring of resistance in Spodoptera exigua (Lepidoptera: Noctuidae) from four districts of the Southern Punjab, Pakistan to four conventional and six new chemistry insecticides
Monitoring of resistance in Spodoptera exigua (Lepidoptera: Noctuidae) from four districts of the Southern Punjab, Pakistan to four conventional and six new chemistry insecticides
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DOI：
10.1016/j.cropro.2011.11.014
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发表时间：
2012-03-01
期刊：
影响因子：
2.8
通讯作者：
Razaq, M.
中科院分区：
文献类型：
--
作者：
Ishtiaq, M.;Salem, Mushtaq A.;Razaq, M.
本研究进行了评估在巴基斯坦人口的甜菜夜蛾，甜菜夜蛾（Hubner）的各种杀虫剂的抗性。不同田间种群的S.从2008年到2010年，使用标准的浸叶生物测定法监测了来自旁遮普四个区的甜菜对杀虫剂的抗性。对于拟除虫菊酯和有机磷，与敏感的Lab-Pk种群相比，抗性比率范围为：溴氰菊酯7 - 105倍，氯氰菊酯12 - 136倍，毒死蜱20 - 134倍，丙溴磷37 - 143倍。新化学杀虫剂对多杀菌素、阿维菌素、茚虫威、甲氨基阿维菌素苯甲酸盐、虱螨脲和甲氧虫酰肼的抗性倍数分别为3-73倍、5-226倍、6-88倍、3-75倍、2.4~59倍和3-41倍。LC50值的两两相关系数表明，溴氰菊酯、氯氰菊酯和毒死蜱的交互抗性与LC50值呈正相关，而丙溴磷的抗性与除毒死蜱外的其他杀虫剂的抗性相关。新化学杀虫剂与供试杀虫剂之间无相关性。在大多数种群中，对有机磷的抗性水平很高或很高，这表明应避免使用有机磷来对抗这种害虫。在某些地区，包括木尔坦和哈内瓦尔，有选择地使用拟除虫菊酯似乎是可以接受的，因为在这些地区，拟除虫菊酯的抗药性水平较低。新型化学杀虫剂;虱螨脲、甲氧虫酰肼、茚虫威和甲氨基阿维菌素在大部分供试种群中分别为无抗性、极低抗性、低抗性和中等抗性。这些也被认为是环境安全和更安全的天敌。由于这些特性，它们可以用于IPM程序中，辅以生物控制剂，如核型多角体病毒（NPV）和天敌，如寄生虫和捕食者。在没有、很低或低水平抗性的种群中，轮换使用具有不同作用模式的杀虫剂也可能有助于管理S. exigua. (C)2011爱思唯尔有限公司保留所有权利。
The present studies were carried out to evaluate resistance in Pakistani populations of beet armyworm, Spodoptera exigua (Hubner) to various insecticides. Different field populations of S. exigua from four districts of the Punjab were monitored from 2008 to 2010 for resistance against insecticides using a standard leaf dip bioassay method. For pyrethroids and organophosphates, resistance ratios compared with a susceptible Lab-Pk population were in the range of 7-105-fold for deltamethrin, 12-136-fold for cypermethrin, 20-134-fold for chlorpyrifos and 37-143-fold for profenofos. For new chemistry insecticides, resistance levels were 3-73-fold for spinosad, 5-226-fold for abamectin, 6-88-fold for indoxacarb, 3-75-fold for emamectin benzoate, 2.4-59-fold for lufenuron and 3-41-fold for methoxyfenozide. The pairwise correlation coefficients of LC50 values indicated a positive correlation with cross-resistance among deltamethrin, cypermethrin and chlorpyrifos, whereas resistance to profenofos showed correlations with resistances to other insecticides except chlorpyrifos. The new chemistry insecticides showed no correlations among any of the tested insecticides. There were high to very high levels of resistance to organophosphates in most of the populations, which suggested that these should be avoided against this pest. Selective use of pyrethroids in some areas including Multan and Khanewal, where they showed a low level of resistance, would appear to be acceptable. The new chemistry insecticides; lufenuron, methoxyfenozide, indoxacarb and emamectin had no, very low, low and moderate resistance levels for most of the tested populations, respectively. These are also considered to be environmentally safe and safer to natural enemies. Due to these characteristics they could be used in IPM programs supplemented with bio-control agents such as Nuclear Polyhedrosis Virus (NPV), and natural enemies such as parasitoids and predators. Rotation of insecticides with different mode of action where populations have no, very low or low levels of resistance could also be helpful in the management of insecticide resistance in S. exigua. (C) 2011 Elsevier Ltd. All rights reserved.