Attractant Effect of Trap Logs Treated with Ethanol to Platypus koryoensis (Coleoptera: Platypodidae) Son, Su-Yeon; Lee, Sun Keun; Seo, Sang-Tae;
The attractant effect to Platypus koryoensis (Murayama), an insect vector of Korean oak wilt disease, was determined using a multi-funnel trap and trap logs treated with ethanol and ethanol extract of the bark of the Mongolian oak Quercus mongolica (Fisher). The number of entrance holes in ethanol and bark ethanol extract treatments was higher than that in the control (blank bottle). However, the number of entrance holes in ethanol and bark ethanol extract treatments was not significantly different. The number of entrance holes in the logs increased with increase in diameter of the logs. The lower part of the trap logs had significantly more number of entrance holes than that in the upper part (p < 0.05). The lower part of trap logs tends to be rarely exposed to direct sunlight resulting in desiccation of the logs, which in turn provides good conditions for microbial growth, a food source for P. koryoensis. The results show, that ethanol could be used effectively in the monitoring and maintenance of P. koryoensis because of the cheaper cost of ethanol than bark ethanol extracts, and thus, having a higher economical advantage. Further research of oak bark ethanol extracts is necessary to improve its efficiency.
Esaki, K., N. Kamata, and K. Kato. 2002. A sticky screen trap for surveying aerial populations of the ambrosia beetle Platypus quercivorus (Coleoptera: Platypodidae). Appl. Entomol. Zool. 37(1), 27-35.
Hong, K.J., Y.D. Kwon, S.W. Park, and D.P. Lyu. 2006. Platypus koryoensis (Murayama) (Platypodidae; Coleoptera), the vector of oak wilt disease. Korean J. Appl. Entomol., 45(2), 113-117.
Igeta, K., K. Esaki, K. Kato, and N. Kamata. 2004. Spatial distribution of a flying ambrosia beetle Platypus quercivorus (coleoptera: Platypodidae) at the stand level. Appl. Entomol. Zool. 39(4), 583-589.
Juzwik, J., Appel, D.N., MacDonald, W.L., Burks, S., 2011. Challenges and successes in managing oak wilt in the united states. Plant Dis. 95(8), 888-900.
Kelsey, R.G., 1994. Ethanol and ambrosia beetles in Douglas fir logs with and without branches. J. Chem. Ecol. 20(12), 3307-3319.
Kim, K.H., Choi, Y.J., Seo, S.T., Shin, H.D., 2009. Raffaelea quercus-mongolicae sp. nov. associated with Platpus koryoensis on oak in Korea. Mycotaxon. 110, 189-197.
Kobayashi, M., Hagita, M., 2000. Process of mass mortality of oak trees and capture of Platypus quercivorus Murayama (Coleoptera: Platypodidae). Ap. For. Sci. 9, 133-140.
Korea Forest Research Institute, 2010. Ecology and control research of oak wilt disease. 3 p.
Korea Forest Research Institute. 2012. Economic tree species 2. Oak Tree. 3 p.
Korea Forest Research Institute. 2013. Comprehensive management research of oak wilt disease. 3 p.
Korea Forest Service. 2014. 2015' Forest pest surveillance and control plan. pp. 87-96.
Kubono, T., Ito, S., 2002. Raffaelea quercivora sp. nov. associated with mass mortality of Japanese oak, and the ambrosia beetle (Platypus quercivorus). Mycosicence. 43(3), 255-260.
Kusumoto, D., Masuya, H., Ohmura, K., kamata, N., 2012. Virulence of Raffaelea quercivora isolates inoculated into Quercus serrata logs and Q. crispula saplings. J. For. Res. 17(4), 393-396.
Kyhl, J.F., Bartelt, R.J., Cosse, A., Juzwik, J., Seybold, S.J., 2002. Semiochemical-mediated flight responses of sap beetle vectors of oak wilt, Ceratocystis fagacearum. J. Chem. Ecol. 28(8), 1527-1547.
Lee, J.S., Haack, R.A., Choi, W.I., 2011. Attack pattern of Platypus koryoensis (Coleoptera: Curculionidae: Platypodidae) in relation to Crown Dieback of Mongolian oak in Korea. Environ. Entomol. 40, 1363-1369.
Montgomery, M.E., Wargo, P.M. 1983, Ethanol and other host-derived volatiles as attractants to beetles that bore into hardwoods. J. Chem. Ecol. 9(2), 181-190.
Miller, D.R., Rabaglia, R.J., 2009. Ethanol and (-)-$\alpha$-Pinene: Attractant kairomones for bark and ambrosia beetles in the southeastern US. J. Chem. Ecol. 35, 435-448.
Murata, M., Yamada, T., Ito, S., 2005. Changes in water status in seedlings of six species in the Fagaceae after inoculation with Raffaelea quercivora Kubono et Shin-Ito. J. For. Res. 10(3), 251-255.
Murata. M., Yamada, T., Matsuda, Y, Ito, S., 2007. Discoloured and non‐conductive sapwood among six Fagaceae species inoculated with Raffaelea quercivora. For. Pathol. 37(2), 73-79.
Murayama, J., 1930. Revision des familles des Ipides et des Platypides de Coree. J. Chosen Nat. Hist. Soc. 11, 8-38.
Son, S.Y., Seo, S.T., Park, H.C., 2014. Assessment of virulence of Raffaelea quercus-mongolicae and Raffaelea spp. isolates by artificial inoculation of Quercus mongolica logs. Res. Plant Dis. 20(4), 270-274.
Ueda, A., Fujita, K., Urano, T., 2000, Capture of beetles using several attractants : Effect of ethanol as a synergist. Ap. For. Sci. 9(1), 121-125.