Roditakis Emmanouil, Roditakis Nikos E, Tsagkarakou Anastasia
Plant Protection Institute of Heraklio, National Agricultural Research Foundation, 71003 Heraklio, Greece.
Pest Manag Sci. 2005 Jun;61(6):577-82. doi: 10.1002/ps.1029.
The resistance levels to alpha-cypermethrin, bifenthrin, pirimiphos-methyl, endosulfan and imidacloprid were determined in Bemisia tabaci (Gennadius) from Crete. Five B tabaci populations collected from greenhouse and outdoor crops were bioassayed and compared with a reference susceptible strain. Bemisia tabaci collected in a floriculture greenhouse exhibited the highest resistance against all insecticides: at LC50, resistance factors were 23-fold for bifenthrin, 80-fold for alpha-cypermethrin, 18-fold for pirimiphos-methyl, 58-fold for endosulfan and 730-fold for imidacloprid. A population collected on outdoor melons was more susceptible than the reference strain against all insecticides tested, suggesting the occurrence of local highly susceptible B tabaci populations in 'refugia'. In pairwise comparisons of resistance levels, correlation was observed between the LC50 values of the pyrethroid insecticides bifenthrin and alpha-cypermethrin.
测定了来自克里特岛的烟粉虱（Bemisia tabaci (Gennadius)）对高效氯氰菊酯、联苯菊酯、甲基嘧啶磷、硫丹和吡虫啉的抗性水平。对从温室和户外作物上采集的5个烟粉虱种群进行了生物测定，并与一个参考敏感品系进行了比较。在花卉温室中采集的烟粉虱对所有杀虫剂的抗性最高：在LC50时，联苯菊酯的抗性倍数为23倍，高效氯氰菊酯为80倍，甲基嘧啶磷为18倍，硫丹为58倍，吡虫啉为730倍。在户外甜瓜上采集的一个种群对所有测试杀虫剂的敏感性高于参考品系，这表明在“避难所”中存在当地高度敏感的烟粉虱种群。在抗性水平的成对比较中，观察到拟除虫菊酯类杀虫剂联苯菊酯和高效氯氰菊酯的LC50值之间存在相关性。
