Ebadollahi Asgar, Setzer William N, Palla Franco
Department of Plant Sciences, Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 5697194781, Iran.
Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
Plants (Basel). 2024 Jun 21;13(13):1725. doi: 10.3390/plants13131725.
The confused flour beetle, du Val, is one of the cosmopolitan and polyphagous storage insect pests. The frequent application of chemical insecticides has resulted in several side effects, including threats to human health and non-target organisms and the resistance of insect pests. In the current study, the fumigant toxicity and feeding deterrence potential of Willd. essential oil on . adults were investigated. The essential oil was rich in terpenic compounds, in which α-thujone (27.8%) and 1,8-cineole (22.8%) were dominant. The essential oil displayed significant fumigant toxicity on , where a concentration of 35.3 μL/L caused 100% mortality of the treated adults after 48 h. The LC and LC values (lethal concentrations to kill 30% and 40% of tested insects: 15.1 and 18.4 μL/L, respectively) significantly decreased the nutritional indices of the pest, including the consumption index, relative consumption rate, and relative growth rate. The feeding deterrence index of the essential oil were calculated as being 62.29 and 48.66% for the concentrations of 15.1 and 18.4 μL/L after 5 days, respectively. Accordingly, essential oil can be considered an efficient, available, and natural alternative to detrimental chemical pesticides in the management of .
杂拟谷盗（du Val）是世界性分布且多食性的仓储害虫之一。化学杀虫剂的频繁使用已导致多种副作用，包括对人类健康和非靶标生物的威胁以及害虫抗药性。在本研究中，对Willd.精油对杂拟谷盗成虫的熏蒸毒性和取食驱避潜力进行了研究。该精油富含萜类化合物，其中α-侧柏酮（27.8%）和1,8-桉叶素（22.8%）占主导。该精油对杂拟谷盗显示出显著的熏蒸毒性，在35.3 μL/L的浓度下，处理后的成虫在48小时后死亡率达100%。LC 和 LC 值（杀死30%和40%受试昆虫的致死浓度，分别为15.1和18.4 μL/L）显著降低了害虫的营养指标，包括消耗指数、相对消耗率和相对生长率。该精油在浓度为15.1和18.4 μL/L时，5天后的取食驱避指数分别计算为62.29%和48.66%。因此，在杂拟谷盗的防治中，Willd.精油可被视为一种有效、可用且天然的有害化学农药替代品。
