Emergency research in Asian countries on the decline adn death of trees caused by fungi carried by ambrosia beetles

日本栎枯萎病自80年代以来已呈明显发展趋势。这种损害是由鸭嘴兽携带的一种真菌引起的。该项目的目的是调查亚洲国家周围这种损害的发生情况。深入的野外调查显示，从泰国、台湾和越南的森林中采集了扁足虫科昆虫，并从昆虫中检测到拉斐尔真菌。这些结果表明，在东南亚国家的森林生态系统中，豚草甲虫及其伴生真菌之间的密切联系可能是普遍存在的。

Japanese oak wilt has been obvious and expanded since 1980's. The damage is caused by an fungus, Raffaelea quercivora carried by Platypus quercivorus. The aim of this project was to survey the occurrence conditions of this damage around the Asian countries. Intensive field surveys revealed that Platypodidae insects were collected from forests in Thailand, Taiwan and Vietnam, and Raffaelean fungi were also detected from the insects. These results suggest that intimate associations between ambrosia beetles and their accompanying fungi might potentially be prevalent at forest ecosystems in the south-east Asian countries.