草间钻头蛛对苜蓿苔螨捕食作用的研究  

Predation of Hylyphantes graminicolum on Bryobia praetiosa

作　　者：姜双林[1] 

机构地区：[1]陇东学院生命科学系,庆阳745000

出　　处：《植物保护》2007年第4期54-57,共4页Plant Protection

基　　金：甘肃省自然科学基金(ZS012-A25-020-N);世界银行黄土高原水土保持项目(CNPA3540-G02)

摘　　要：草间钻头蛛成蛛对苜蓿苔螨雌成螨的捕食功能反应属Holling-Ⅱ型,对苜蓿苔螨各螨态的控制能力从小到大依次为:成螨>若螨>幼螨。草间钻头蛛对苜蓿苔螨的寻找效应(S)随猎物(Nt)和天敌密度的增加而降低。草间钻头蛛的饥饿程度等因素均可引起功能反应参数的变化。草间钻头蛛成蛛喜食苜蓿苔螨的成螨和若螨,对幼螨的捕食能力较弱。The functional response of the adults of Hylyphantes graminicolum to the adult females of Bryobia praetiosa fitted Holling Ⅱ type equation. The order of the control ability of H. graminicolum is as followed： adult〉 nymph〉larvae. The searching efficiency of H. graminicolum declined with the increase of the prey density （Nt） and the predator density （P）. The length of H. graminicolum starvation could lead to change of the parameters of functional responses. The adults of H. graminicolum prefered the adults and nymphs of B. praetiosa to its larvae.

关 键 词：草间钻头蛛 苜蓿苔螨 功能反应 寻找效应 捕食作用 

分 类 号：S763.46[农业科学—森林保护学]