Monitoring of insecticide resistance in larvae of Leptinotarsa decemlineata in Xinjiang Uygur autonomous region by diagnostic dose.
Author of the article:
Author's Workplace：
Key Words：Colorado potato beetle, diagnostic dose, LD-P line, insecticide, resistance
Abstract： The proportion of individuals of Leptinotarsa decemlineata (Say) resistant to several commonly used synthetic insecticides was determined in populations from 10 locations in Xinjiang; Qitai (QT), Fukang (FK), Urumqi (URMQ), Changji (CJ), Usu (US), Tekes (TKS), Nilka (NLK), Qapqal (QPQL), Xinyuan (XY) and Altay (ALT). 34.3% and 65.7% of the CJ and XY populations were resistant to cyhalothrin, and 25.0% of the US population resistant to α\|cypermethrin. Similarly, 60.1% and 29.0% of the QT and NLK populations showed resistance to malathion, 64.3% and 99.0% of the CJ and NLK populations were resistant to carbofan, and 50.3% of the CJ populations were resistant to imidacloprid. These results demonstrate that some populations of L. decemlineata in the Xinjiang Uygur autonomous region have developed detectable levels of resistance to conventional insecticides.