松材线虫(Bursaphelenchus xylophilus(Steiner和Buhrer,1934)),是松树萎蔫病的主要致病因子,是一种起源于北美的入侵物种.然而,并未有在起源地大规模爆发的报道~([1]).松材线虫于1900年左右传入日本,1982年在我国首次发现,近期扩散到葡萄牙和西班牙,对亚洲和欧洲的松林造成了巨大的破坏.浙江省舟山区是中国受灾最严重的地区之一(413 km~2),几乎所有 Bursaphelenchus xylophilus (Steiner and Buhrer, 1934), a major causative agent of pine wilt disease, is a invasive species that originated in North America. However, there are no reports of large-scale outbreaks in origin ~ ( [1].) Pine wood nematodes were introduced into Japan around 1900, the first discovery in China in 1982, and recently spread to Portugal and Spain, causing great damage to the pine forests in Asia and Europe. One of the most serious areas (413 km ~ 2), almost all