关键词: 德国小蠊, 抗药性, 抗性消退

Abstract: The WHO advocated method using the pesticide smeared jam bottle was used to investigate the resistance and the abatement after two years breeding in lab of german cockroach (Blattella germanica) from ship. The result showed that ,the knock-down time (KT₅₀)of the sensitive strain were 4.48、5.23 、13.49 min respectively, the spot strain of Shanghai were 9.67 、13.00 、11.90 min respectively, the spot strain of Dalian were 16.18 、15.35 、17.37 min respectively, and the abatement strain of Shanghai were 4.85 、4.68 、8.77 min respectively, the abatement strain of Dalian were 4.47、6.12 、10.20 min respectively. The pesticides resistance coefficient of the resistance strain raised in laboratory for two years were abated.