Susceptibility Baseline and Chlorantraniliprole Resistance Monitoring in Chilo suppressalis (Lepidoptera: Pyralidae)
Susceptibility Baseline and Chlorantraniliprole Resistance Monitoring in Chilo suppressalis (Lepidoptera: Pyralidae)
复制标题
DOI：
10.1603/ec13058
复制
发表时间：
2013-10-01
影响因子：
2.2
通讯作者：
Su, Jianya
中科院分区：
文献类型：
--
作者：
Gao, Congfen;Yao, Rong;Su, Jianya
氯虫苯甲酰胺是一种新型邻氨基苯甲酰胺类杀虫剂，自 2008 年起在中国商业化，用于防治多种鳞翅目昆虫，包括二化螟、二化螟。由于这种害虫对许多传统杀虫剂产生抗药性，化学防治变得困难。为了便于氯虫苯甲酰胺抗性监测，2011年和2012年进行了苗浸生物测定，以评估来自中国7个省的30个二化螟种群的敏感性。该测定建立了幼虫敏感性基线，LC50 为 1.393 mg a。我/升。氯虫苯甲酰胺对田间种群二龄幼虫的毒性 (LC50) 范围为 0.568 (SL12) 至 13.547 (RA12) mg a。我/升。不同地理人群对氯虫苯甲酰胺的敏感性存在显着差异，但除东安、苍南、庐江等地区人群外，大多数人群的年份间差异不显着。对化学品的抗性比率范围为 1.0 至 9.7，表明大多数菌落仍然敏感或表现出敏感性一定程度的下降。大约 13.3% 的人群对氯虫苯甲酰胺表现出低水平的耐药性。这些数据可用于未来的监测计划，以检测由于使用杀虫剂而导致的敏感性变化。
Chlorantraniliprole, a new anthranilic diamide insecticide, has been commercialized in China since 2008 for controlling of several lepidopterans, including rice stem borer, Chilo suppressalis Walker. Chemical control of this pest has become difficult because of its resistance development to many conventional insecticides. To facilitate chlorantraniliprole-resistance monitoring, seedling dip bioassays were conducted in 2011 and 2012 to assess the susceptibility of 30 populations of C. suppressalis from seven provinces in China. The assays established a larval susceptibility baseline with LC50 at 1.393 mg a. i/liter. The toxicity (LC50) of chlorantraniliprole against second-instar larvae of field populations ranged from 0.568 (SL12) to 13.547 (RA12) mg a. i/liter. Substantial variations of the susceptibility to chlorantraniliprole were detected among different geographic populations, but no signi_cant difference was observed between years for most populations except for populations from Dong'an, Cangnan, and Lujiang. Resistance ratios to the chemical ranged from 1.0 to 9.7, indicating that most colonies remained susceptible or showed certain decrease in susceptibility. Approximately, 13.3% of the populations exhibited low levels of resistance to chlorantraniliprole. These data are useful in future monitoring program for detecting any changes in susceptibility as a result of use of the insecticide.