부산대학교 도서관

The objective of this study was to evaluate the toxicities of 7 semiochemicals (citral, citronellal, eugenol, geraniol, limonene, nerol and neem oil) on the pharaoh ant, Monomorium pharaonis(L.). Bioassays were performed to determine the effects of the semiochemicals on the mortality and the feeding repellency to the workers of the pharaoh ants. In the no-choice tests, the feeding repellency response of the workers of the pharaoh ant was highest on eugenol and geraniol. In the direct contacted experiment, toxicity of 7 semiochemicals contact to the workers of M. pharaonis, 0.1 % eugenol was the most toxic to the workers with the mortality of 76.8 % after 24 hours; and 94.5 % after 48 hours. The workers contact 0.1 % geraniol then the mortality was 70.8 %; after 48 hours contacted, the mortality of workers was 76.5 %. In the experiment of toxicity of M. pharaonis workers after indirectly contacted with 6 semiochemicals after 24 hours, geraniol showed greater toxicity than the other semiochemicals and the mortality of workers was 44.7 %; 48 hours after indirectly contacted with semiochemicals, the highest toxicity of semiochemicals were geraniol and neem oil and the mortality was 57.3 % and 55 %, respectively; the secondary was citronellal, the mortality was 43.3 %. The highest mortality of geraniol bait to M. pharaonis workers was 17 % in the experiment of mortality of the workers of the pharaoh ant three weeks after treatment with various concentrations of 7 semiochemical baits.