Alyokhin Andrei, Sewell Gary, Choban Raymond
Department of Biological Sciences, University of Maine, 5722 Deering Hall, Orono, ME 04469-5722, USA.
Pest Manag Sci. 2008 Jan;64(1):94-9. doi: 10.1002/ps.1459.
Novaluron is a benzoylphenyl urea chitin synthesis inhibitor that combines good activity against larval stages of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), with low mammalian toxicity. Previous studies suggest that it has deleterious sublethal effects on adults.
Continuous exposure of adult Colorado potato beetles to novaluron-treated foliage as both ovipositional and feeding substrate did not affect their survivorship or the number of eggs produced, but viable larvae hatched only from the eggs that were laid on the first day of the experiment. Viability was restored after adult beetles spent 48-96 hours on untreated leaves. In a separate experiment, direct exposure to novaluron of eggs laid by unexposed beetles also reduced the number of larvae hatching.
Results confirm a negative effect of novaluron on the number of progeny produced by the Colorado potato beetle. Direct toxicity did not explain all of the reduction in egg hatch observed, suggesting that novaluron probably acted on reproductive adults as well as on eggs after they were deposited.
诺伐隆是一种苯甲酰基苯基脲几丁质合成抑制剂，对科罗拉多马铃薯甲虫（Leptinotarsa decemlineata (Say)，鞘翅目：叶甲科）的幼虫具有良好活性，且对哺乳动物毒性较低。先前的研究表明，它对成虫有有害的亚致死效应。
将成年科罗拉多马铃薯甲虫持续暴露于经诺伐隆处理的叶片上，该叶片作为产卵和取食基质，并未影响其存活率或产卵数量，但只有在实验第一天产下的卵孵化出了有活力的幼虫。成虫在未处理的叶片上停留48 - 96小时后，活力得以恢复。在另一个实验中，未接触过诺伐隆的甲虫所产的卵直接接触诺伐隆，也减少了孵化出的幼虫数量。
结果证实了诺伐隆对科罗拉多马铃薯甲虫后代数量有负面影响。直接毒性并不能解释所观察到的卵孵化率降低的全部原因，这表明诺伐隆可能对生殖期成虫以及产卵后的卵都有作用。
