【摘要】 室内研究了草间钻头蛛Hylyphantes graminicola雌蛛对茶尺蠖Ectropis oblique1龄幼虫和小绿叶蝉Em-poesca flavescens成虫、大草蛉Chrysopa pallens和中华通草蛉Chrysoperla sinica的2龄幼虫对茶尺蠖卵、1龄幼虫的选择捕食作用。对试验数据应用Ivelev指数、Jacobs指数和Manly指数及Murdoch作图法进行了比较分析。结果显示,草间钻头蛛对茶尺蠖1龄幼虫和小绿叶蝉成虫的选择性不明显,选择性不因猎物数量的增加而转移。而大草蛉和中华通草蛉对茶尺蠖卵均有明显的正选择效应。更多还原

【Abstract】 In laboratory,the selective predation of Hylyphantes graminicola to 1st instar larvae of Ectropis obliqua and the adults of Empoesca flavescens,2nd instar larvae of Chrysopa pallens and Chrysoperla sinica to the egg and 1st instar larvae of Ectropis oblique were investigate.The data were compared and analyzed by Ievlve index,Jacobs index,Manly index and Murdoch figures.The results showed that H.graminicola had no evident selectivity to 1st instar larvae of Ectropis obliqua and the adults of Empoesca flavescens,and their selective efficiency did not transfer with the increase of number of preys.While both Chrysopa septempunctata and Chrysopa sinica had positive preference to the eggs of Ectropis oblique.更多还原