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- 저자 : Ramin Khaghani (검색결과 1 건)
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Mehran Rezaei,Ramin Khaghani,Saeid Moharramipour 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.4
The German cockroach, Blattella germanica (L.) (Blattodea: Blattellidae), has been recognized as a serious health problem because of its potential to harbor and transmit human disease-causing pathogens. The development of new and environmentally friendly control agents is essential as alternative tool to conventional chemical insecticides. The aim of the current study was to determine the fumigant and contact toxicity of essential oils (EOs), Artemisia sieberi Besser, Eucalyptus camaldulensis Dehn. and Thymus persicus (Ronniger ex Rech. f.) and cold press oil of Eruca sativa (Miller) (ESO) against first instar nymphs and adults. According to results, the LC 50 values of EOs were between 15.01 and 28.80 μl/l air for fumigant toxicity, 2202.8 and 5600.2 mg/l for dipping toxicity and 9484.2 and 34,421.1 mg/l for applied surface toxicity. Fumigant activity of the oils were significantly more toxic than other methods. In general, the toxicity of A. sieberi was higher than other EOs. Also, the first instar nymphs were more susceptible than adults. Additionally, the results showed that the EOs were significantly more toxic than ESO in both fumigant and dipping methods. In addition to contact effects, the fumigant activity of ESO was proved, although the toxicity was lower than the EOs. Hence, it is important to consider the production cost benefit of ESO in comparison with the EOs. So, the ESO could be considered as a good candidate in control of the cockroach but in enclosed spaces such as inaccessible cockroach hiding places, the EO of A. sieberi can be useful.
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