Abstract
We inoculated three strains of the hyphae of Shiitake mushroom, Lentinula edodes to stems and logs of Quercus crispula trees killed by the infestation of an ambrosia beetle, Platypus quercivorus in order to investigate the effect of L. edodes to prevent emergence of the beetle. The number of beetles emerged from logs was not significantly different between strains and between logs with L. edodes and logs with holes as well as logs with L. edodes. The number of beetles emerged from standing trees was largest at trees without holes, but it did not differed from both trees with L. edodes and trees with holes. The number from standing trees was smallest at trees with the strong strain to obstruct the spawn expansion of the oak-infectious fungus, Raffaelea quercivora. However, it did not significantly differed between strains and between trees with L. edodes and trees with holes. As these results, although L. edodes may affect to prevent emergence of the beetles, drying through holes bored artificially may have high effect to prevent it.
