六斑月瓢虫捕食萝卜蚜的功能反应

Study on the Functional Responses of Menochilus sexmaculatus Fab. to Lipaphis erysimi (Davis)

在室温下观察了六斑月瓢虫各虫态及不同温度下对萝卜蚜的捕食量,并对Holling-Ⅱ型和Holling-Ⅲ型功能反应模型分别进行拟合。结果表明,六斑月瓢虫的发现率和最大捕食量随龄期的增大而增大;成虫对萝卜蚜的平均处理时间随温度的升高而缩短,发现率和最大捕食量随温度的升高而增大,表明高温有利于六斑月瓢虫的捕食。

The predacious effects of Menochilus sexmaculatus Fab. ricius to turnip aphid under different ages and different temperature were studied in this paper. The functional responses were stimulated by Holling-Ⅱ model and Holling-Ⅲ model. The quest constant and the maximum number of predation were ascended as the age increased. The result showed that temperature had the significant effects on the predation of the ladybirds. The quest constant and the maximum number of predation were ascended as temperature became higher, with the average handle time reducing. The predation of the ladybirds was beaeficial to the higher temperature.