Fumigant toxicity of essential oil from Mentha pulegium against different life stages of the indian meal moth, Plodia interpunctella (Hubner) (Lepidoptera: Pyralidae)
عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
نویسندگان
چکیده
Stored product pests can cause considerable damages to agricultural products during storage. Plodia interpunctella (Hubner), the Indian meal moth, is one of the most important insect pests that highly infests various kinds of stored goods if no preventive of controlling measures is taken. Essential oils due to low risk to human and other mammals, rapid decomposition and lower environmental risks are widely studied as a promising alternative pest control means for commonly used synthetic chemicals. In this experiment, fumigant toxicity of Mentha pulegium essential oil was investigated against the egg, larva and adult stages of this species. All bioassay tests were conducted at 27 ± 2°C, 65±5% RH and photoperiod of 16:8 h (light: dark). Results showed that the responses of different stages to this essential oil are significantly different. The first instar larva was the most susceptible stage with the LC50 value of 1.976 μl/l air followed by the adult (LC50 = 2.320 μl/l air) and the egg stage (LC50 = 16.115 μl/l air). According to the findings, it can be concluded that the essential oil from M. pulegium have the desired effectiveness to be used practically in protecting the stored products from the Indian meal moth
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