【摘要】 研究了二双斑唇瓢虫 (Chilocorusbijugus Mulsant)对矢尖蚧 (Unaspisyanonensis Kuwana)的捕食作用。结果表明 ,瓢虫雌成虫对矢尖蚧各虫态的功能反应呈 Holling II型。瓢虫对矢尖蚧的捕食效应随捕食者个体间干扰作用的增加而下降 ,捕食作用率 (E)随着瓢虫数增加呈幂函数下降曲线。温度对瓢虫的捕食效应具有显著的影响 ,寻找效率 (a)和处置时间 (Th)与温度之间呈二次函数关系。猎物密度对瓢虫生殖力的影响呈 logistic曲线。更多还原

【Abstract】 The predation of lady beetle,Chilocorus bijugus Mulsant to arrowhead scale,Unaspis yanonenisis Kuwana was studied in laboratory.The functional response of lady beetle to arrowhead scale was determined as Holling’s type II.The mutual interference in individual predators can be described by using Hassell and Varley’s equation.The predation efficiency(E) of predator varied with environmental temperature.The effect of temperature on search rate (a) and handling time (Th) can be described by using the quadratic curve.The effect of prey density on the fecundity of lady beetle can be described by using the logistic curve.更多还原