摘要
选用 7株虫生真菌对松褐天牛成虫进行了生物测定。结果表明不同菌株的毒力存在差别 ,其中以金龟子绿僵菌Ma83菌株的毒力最强 ,校正死亡率及感染率分别为 1 0 0 %和 79% ,致死中时LT50 为 5 2 4d ,致死中浓度LC50 为 1 3 8× 1 0 6孢子 /mL。松褐天牛虫体不同部位接触白僵菌Bb2 0 2 1无纺布菌条的感染试验表明 ,触角、口器、足和腹的感染率依次升高 ,致死中时依次下降 ,表明足与腹部是白僵菌感染天牛成虫的主要部位。林间感染试验表明 ,球孢白僵菌Bb2 0 2
The virulence of different entomogenous fungi on adult pine sawyers,Monochamus alternatus Hope was tested.The result showed that the virulence varied.Among them,Ma83,a Metarhizium anisopliae isolate,was the most virulent one.The mortality of the sawyers was up to 100% and the infection rate was 79%.LT_(50) was 5.24 days.Its LC_(50) on the adult sawyer was determined to be 1.38×10~6 conidia per mL.The experiment was made to expose different parts of the sawyers to the fungal bands for infection.The infection increased and medium lethal time declined in an order of antenna,mouth part,leg and abdomen.Bb202-1 strain had higher virulence against adult sawyers in the forest.
出处
《中国森林病虫》
北大核心
2004年第6期13-16,共4页
Forest Pest and Disease
基金
国家自然科学基金重点项目"持续控制松褐天牛的新途径-化学信息与病原真菌的联合使用研究 (30 330 5 0 0 )"
中国科学院知识创新工程重大项目"松材线虫传媒 -松褐天牛关键防治技术研究 (KSCX1 -SW -1 3-0 2 -0 1 )"
安徽省十五科技攻关项目"持续松材线虫媒介
关键词
松褐天牛
球孢白僵菌
金龟子绿僵菌
致病力
Monochamus alternatus
Beauveria bassiana
Metarhizium anisopliae
pathogenicity
