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在实验条件下分别研究了双带盘瓢虫Lemniabiplagiata与六斑月瓢虫Menochilus sexmaculatus Fabricius成虫对螺旋粉虱Aleurodicus dispersus Russell幼虫的捕食功能反应,并用Holling-Ⅱ型功能反应模型拟合。拟合的圆盘方程分别为Na=1.0776N/(1+0.0032N)和Na=0.8606/(1+0.0060N),双带盘瓢虫和六斑月瓢虫的理论日最大捕食量分别为333.333头和142.857头。结果表明,两种瓢虫对入侵害虫螺旋粉虱有良好的捕食作用和控制潜能。
The predatory functional response of Lemniabiplagiata and the adult Menochilus sexmaculatus Fabricius adults to the Aleurodicus dispersus Russell larvae was studied under experimental conditions and fitted with the Holling-Ⅱ functional response model. The fitted disc equations were Na = 1.0776N / (1 + 0.0032N) and Na = 0.8606 / (1 + 0.0060N), respectively. The maximum theoretical daily predation numbers of the ladybugs 333.333 head and 142.857 head. The results showed that the two ladybugs had good predation and control potential on the invasive pest.