Ling A I, Sulaiman S, Othman H
Department of Biomedical Science, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz 50300 Kuala Lunpur, Malaysia.
Iran J Arthropod Borne Dis. 2009;3(2):1-6. Epub 2009 Dec 31.
The efficacy of Piper aduncum essential oil was evaluated against Periplaneta americana adults and nymphs in the laboratory.
The plant essential oil at varying concentrations ranging between 10,000 to 80,000 ppm were placed inside glass beakers, rolled horizontally to ensure the essential oil covers all sides of the beakers and exposed to adults and nymphs of P. americana. Resigen (R) 1ppm was used as positive control and distilled water as negative control. The LT50 and LT90 was obtained using Log Probit programme.
Exposure of essential oil to females P. americana at concentrations between 10,000 to 80,000 ppm indicated the LT50 and LT90 values between 5.31 h-189.19 h and 14.90 h-2105.31 h, respectively. Treatment with the same concentrations against males P. americana ,the LT50 and LT90 were 2.08 h-181.73 h and 5.4 h-8460.51 h, respectively. Treatment against the nymphal stage with the same range of concentrations indicated the LT50 and LT 90 of 4.68 h-381.02 h and 28.71 h-5313.36 h, respectively.The nymphs and males were more susceptible than the females cockroaches. Treatment with Resigen (R) at 1ppm indicated much lower LT 50 and LT 90 values of 2.54 h-9.47 h for the females, 1.47 h-4.22 h for the males and 4.69 h-8.92 h for the nymphs.The negative control indicated no mortality for all stages of the cockroach.
Piper aduncum essential oil can be used as an alternative natural product for controlling the cockroach Peripatetic americana.
在实验室中评估了南美蟛蜞菊精油对美洲大蠊成虫和若虫的功效。
将浓度在10000至80000 ppm之间变化的植物精油置于玻璃烧杯内，水平滚动以确保精油覆盖烧杯的所有面，并暴露于美洲大蠊的成虫和若虫。1 ppm的Resigen（R）用作阳性对照，蒸馏水用作阴性对照。使用Log Probit程序获得LT50和LT90。
将精油以10000至80000 ppm的浓度暴露于美洲大蠊雌性，LT50和LT90值分别在5.31小时至189.19小时和14.90小时至2105.31小时之间。用相同浓度处理美洲大蠊雄性，LT50和LT90分别为2.08小时至181.73小时和5.4小时至8460.51小时。用相同浓度范围处理若虫阶段，LT50和LT90分别为4.68小时至381.02小时和28.71小时至5313.36小时。若虫和雄性比雌性蟑螂更敏感。用1 ppm的Resigen（R）处理，雌性的LT50和LT90值低得多，分别为2.54小时至9.47小时，雄性为1.47小时至4.22小时，若虫为4.69小时至8.92小时。阴性对照表明蟑螂所有阶段均无死亡。
南美蟛蜞菊精油可作为控制美洲大蠊的替代天然产品。
