Wang Changlu, Bennett Gary W
Center for Urban and Industrial Pest Management, Department of Entomology, Purdue University, West Lafayette, IN 47907, USA.
Pest Manag Sci. 2006 May;62(5):434-9. doi: 10.1002/ps.1184.
The insecticidal activity of a cockroach gel bait containing a chitin synthesis inhibitor, noviflumuron, was evaluated using laboratory and field strains of the German cockroach, Blattella germanica (L.). Noviflumuron gel bait (0.01-5 mg g(-1)) caused > or = 90% nymphal mortality to laboratory and field strains of B. germanica in choice tests after 11 and 19 days of continuous exposure respectively. In 1 m x 1 m bioassay arenas, laboratory strain B. germanica population levels exposed to 5 mg g(-1) noviflumuron bait or 0.1 mg g(-1) fipronil gel bait were significantly lower than untreated population levels after 3 weeks and 1 week of exposure respectively. Various noviflumuron bait exposure periods (2, 4 and 7 weeks) caused similar population reductions, with a mean of 99.3 (+/- 0.3)% at 7 weeks. Fipronil gel bait caused 100% population reduction at 2 weeks post-exposure. The control population increased 89.0% at 7 weeks. In a simulated kitchen experiment with mixed stage laboratory populations, cockroach trap catches decreased 96.8 (+/- 2.0)% at 8 weeks in the 0.5 mg g(-1) noviflumuron bait treatment. The trap catches in the control increased 506.5 (+/- 493.7)% during the same period. Trap catch reduction by 0.1 mg g(-1) fipronil gel bait reached 100% at 4 weeks. Noviflumuron bait caused significantly lower nymph/total ratios to B. germanica populations in bioassay arenas from 2 weeks after exposure, demonstrating its effectiveness as a control agent for B. germanica with a pattern of activity similar to that expected from a chitin synthesis inhibitor.
使用德国小蠊（Blattella germanica (L.)）的实验室品系和野外品系，对含有几丁质合成抑制剂氟铃脲的蟑螂凝胶饵剂的杀虫活性进行了评估。在选择试验中，连续暴露11天和19天后，氟铃脲凝胶饵剂（0.01 - 5 mg g(-1)）分别导致德国小蠊实验室品系和野外品系若虫死亡率≥90%。在1米×1米的生物测定场地中，暴露于5 mg g(-1)氟铃脲饵剂或0.1 mg g(-1)氟虫腈凝胶饵剂的德国小蠊实验室品系种群数量，在暴露3周和1周后分别显著低于未处理的种群数量。不同的氟铃脲饵剂暴露期（2、4和7周）导致类似的种群数量减少，7周时平均减少99.3（±0.3）%。氟虫腈凝胶饵剂在暴露2周后导致种群数量减少100%。对照种群在7周时增加了89.0%。在一个混合龄期实验室种群的模拟厨房实验中，0.5 mg g(-1)氟铃脲饵剂处理组在8周时蟑螂诱捕捕获量减少了96.8（±2.0）%。同期对照组的诱捕捕获量增加了506.5（±493.7）%。0.1 mg g(-1)氟虫腈凝胶饵剂在4周时诱捕捕获量减少达到100%。暴露2周后，氟铃脲饵剂使生物测定场地中德国小蠊种群的若虫/总数比例显著降低，表明其作为德国小蠊防治剂有效，其活性模式与几丁质合成抑制剂预期的模式相似。
