稻田生态系统中3种蜘蛛对白背飞虱的捕食效应研究  

STUDIES ON PREDATION OF MULTI-SPIDERS FOR SOGATELLA FURCIFERA

作　　者：常瑾[1] 赵敬钊[1] 

机构地区：[1]湖北大学生命科学学院,武汉430062

出　　处：《蛛形学报》2000年第2期116-121,共6页Acta Arachnologica Sinica

摘　　要：应用二次正交旋转组合设计方法,对稻田生态系统中3种捕食性天敌(三突花蛛 Misumenops tri-cuspidata(Tabricius)、草间钻头蛛 Hylyphantes graminicora(Sundevall)、真水狼蛛 Pirata piraticus (Clerk))和1种害虫(白背飞虱 Sogatella furcifera(Horvath))的共存系统进行研究,获得了天敌对害虫控制作用的数学模型。通过模型的主效应分析,得出白背飞虱自身密度对其被食最的影响最大,3种天敌对白背飞虱的捕食量大小依次为:真水狼蛛>三突花蛛>草间钻头蛛;此外,还对各因子进行了交互作用反应的分析,结果表明蜘蛛种间及种内个体间均存在一定的干扰效应。The foraging behavior of three predators (Misumenops tricuspidata、Hylyphantes granimicora 、Pt-ruta piraticus) for Sogatella Furcifera was investigated by using the rotational composite design of quadratic regression. The predation model of the three predators to prey was obtained; y= 34. 6158 + 1.7917x1+ 0. 6250X2+ 2. 2083x3 + 6. 1250x4 -0. 6875x1x3-1. 0625x3x4 - 0. 8769x12- 0.7519x22 -0. 8769x3. The principal efficiency analyses on this model indicate that an increase in Sogatella fur-cifera density has significantly increased the predation of predators on the pest and has a greater effect than another predators. Among the three predators, an increase of predation Pirata piratic us density has the greatest effect on the increase of predation, Misumenops tricuspidata has the second, and Hy-lyphantes graminicora the weakest, otherwise, the analysis of effect shows the inter- and mtra -species interference was occurred.

关 键 词：折背飞虱 捕食作用 稻田 蜘蛛 

分 类 号：S476[农业科学—农业昆虫与害虫防治]