Insecticide Resistance in Field Strains of Pectinophora gossypiella (Saunders) in China and Effect of Synergists on Deltamethrin and Parathion-methyl Activity
✍ Scribed by Xianchun, Li; Yinchang, Wang; Qiansong, Zhang; Ganjun, Yu; Dunyang, Zhang; Yantao, Yang; Zhi, Zhang; Jianping, Zhang; Shoushan, Luo; Caixia, Chen; Shiyin, Ding
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 178 KB
- Volume
- 50
- Category
- Article
- ISSN
- 1526-498X
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✦ Synopsis
Filter-paper residual toxicities of some insecticides used extensively in China were determined during 1994 using newly hatched (within 30 min) larvae of four Pectinophora gossypiella (Saunders) strains. The strains were Ðeld collections collected in the Yangtze River cotton-belt areas. Compared with the susceptible laboratory strain from Qunli (Lishui County, Jiangsu province), the four Ðeld strains from Anqing (Anhui province), Jiangling (Hubei province), Cixi(Zhejiang province) and Tongzhou(Jiangsu province) had developed 185-, 6É7-, 698-and 249-fold resistance, respectively, to deltamethrin. Cixi and Tongzhou Ðeld strains had also developed 103-and 94-fold resistance to fenvalerate, and 10-and 3É6-fold resistance to parathion-methyl. Percentage of survivors at diagnostic dosage for deltamethrin showed that the strains from Anqing, Jiangling, Cixi and Tongzhou had 87É2, 18É3, 90É1 and 74É6% resistant individuals respectively. Cixi and Tongzhou Ðeld strains had 88É9 and 65É3% resistant individuals after application of parathion-methyl, which was consistent with the corresponding resistance ratios. Studies of the e †ect of synergists piperonyl butoxide (PBO), triphenyl phosphate (TPP) with deltamethrin and parathion-methyl in Cixi, Anqing and Tongzhou Ðeld strains suggested that metabolic resistance mechanisms such as carboxylesterases (CarE) and mixed function oxygenases (MFO) were involved in parathion-methyl resistance, but not in deltamethrin resistance.