七星瓢虫和多异瓢虫对桃粉蚜的捕食功能反应研究

将七星瓢虫、多异瓢虫的成虫和幼虫对不同密度下的桃粉蚜的捕食作用进行了研究。结果表明,七星瓢虫、多异瓢虫成虫和幼虫对桃粉蚜的日捕食量有差异。2种瓢虫的捕食量随蚜虫密度的加大而增加,其功能反应属于HollingⅡ型圆盘方程。捕食率随天敌密度的加大而下降,捕食作用受自身密度制约,相互之间存在干扰;七星瓢虫、多异瓢虫相互间干扰符合hasseⅡ模型。2种瓢虫对桃粉蚜均具有较高的控制能力,该研究对七星瓢虫、多异瓢虫对桃粉蚜的田间控制奠定了基础。

Study on the Responses of Coccinella septempunctata and Adonia variegata to Predacious Function of Hyalopterus amygdali

The article aimed to research of the response of Coccinella septempunctata and Adonia variegata to predacious function of predacious function of Hyalopterus amygdali with different density.The result showed that they have different predation amount on Hyalopterus amygdali.And the predation amount of these two natural enemies was increased with the increase of population density of Hyalopterus amygdali,its functional response model belonged to the type of Holling Ⅱ.Their predatory function were restricted by their own density,and their predatory rate reduced with the increase of density natural.Their predacious function was interfered by their own density,whose model belonged to the type of hasse Ⅱ.These two natural enemies laid the foundation of controlling Hyalopterus amygdali.