论文部分内容阅读
为探明桃蚜Myzus persicae是否可以识别来自其捕食性天敌的嗅觉和视觉信息,本研究采用桃蚜和龟纹瓢虫Propylaea japonica这一猎物-捕食者系统,在室内测定了无翅桃蚜对龟纹瓢虫成虫体色和挥发物的识别反应。选择反应试验结果表明,无翅桃蚜既能通过视觉信息识别瓢虫的存在,也能通过嗅觉信息识别瓢虫的存在,说明桃蚜对龟纹瓢虫体色和气味信息的识别存在一定的冗余现象。剂量反应试验结果表明,龟纹瓢虫粗提物的剂量与其对桃蚜的驱避率呈现良好的线性关系,识别反应剂量的临界值在0.3～0.6个瓢虫当量之间,1.2～1.5个瓢虫当量的粗提物的驱避作用与20头活体龟纹瓢虫的驱避作用相当。结论认为,桃蚜可以识别龟纹瓢虫的存在,并对其作出一定的躲避反应,从而降低被捕食的风险。
In order to determine whether Myzus persicae can identify olfactory and visual information from its predatory natural enemies, this study used Myzus persicae and Propylaea japonica, a prey-predator system, to determine Myzus persicae Identification of Body Colors and Volatiles in Propylaea japonica. The results of selective reaction test showed that Myzus persicae could recognize the ladybug through the visual information and the ladybug through the sense of smell, indicating that the identification of body color and smell information by the green peach aphid Redundancy phenomenon. The results of dose response test showed that there was a good linear relationship between the dose of crude extract of Propylaea japonica and its repellent rate to Myzus persicae, the critical value of identifying reaction dose was between 0.3 and 0.6 lady beetle equivalents, 1.2 ~ 1.5 The repellent effect of the ladybug equivalent crude extract was comparable to the repellent effect of the 20 live turtle ladybugs. The conclusion is that Myzus persicae can recognize the existence of Propylaea japonica, and make certain evasion response to it, so as to reduce the risk of prey.