Monitoring the resistance of Apolygus lucorum (Hemiptera: Miridae) to organophosphate insecticides in Henan Province
Author of the article:LI Guo-Ping** FENG Hong-Qiang*** HUANG Bo JIN Yin-Li TIAN Cai-HongQIU Feng HUANG Jian-Rong
Author's Workplace：Henan Key Laboratory of Crop Pest Control, MOA’S Regional Key Laboratory of Crop IPM in Southern Part of Northern China, Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
Key Words：cotton, Apolygus lucorum, insecticide, resistance monitoring
Abstract： [Objectives] To determine changes in sensitivity to common organophosphate insecticides in Apolygus lucorum ( Meyer-Dür)（Hemiptera:Miridae） in cotton growing regions of Henan Province. [Methods] The toxicities of chlorpyrifos, malathion, phoxim, acephate to A. lucorum collected in Xinxiang, Zhoukou, and Nanyang were evaluated during 2010-2013 using a glass vial bioassay method. [Results] Compared to a relatively susceptible population, the RR（Resistance ratio）of A．lucorum to the four insecticides were all lower than 5-fold with no obvious change over 4 years. A．lucorum from all three locations were susceptible to chlorpyrifos, malathion, phoxim, and acephate, and sensitivity to malathion among three populations actually increased. [Conclusion] Therefore, chlorpyrifos, malathion, phoxim, and acephate are recommended for the control of green plant bugs in Henan cotton-growing regions.