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本文研究了十三星瓢虫和多异瓢虫个体间的干扰作用对捕食作用的影响,以及两种瓢虫在苜蓿斑蚜不同密度下的功能反应。结果表明,两种瓢虫对苜蓿斑蚜的捕食率随着捕食者个体间的相互干扰作用的增加而下降,苜蓿斑蚜之间的关系随着瓢虫数量的增加呈幂函数下降曲线,两种瓢虫个体间存在明显的相互干扰效应,且捕食作用是随着猎物密度的增加而增大,还与虫态、温度、饥饿程度等有关。干扰作用和功能反应的数学模拟的理论值与观察值很接近,经X2检验后,误差不显著(P<0.05)。
In this paper, we studied the effects of the interferences between the individuals of the ladybird and the ladybirds on the predation and the functional responses of the ladybugs at different densities. The results showed that the two species of ladybug on the alfalfa aphid predation rate with the mutual interference of predators individuals decreased, the relationship between alfalfa aphids with the ladybug number increased power function decline curve, two The ladybugs have obvious mutual interference effect, and their predation function increases with the density of the prey, but also with the insect state, temperature, the degree of hunger and so on. The theoretical value of the mathematical simulation of the interference and the functional response is close to the observed value. After X2 test, the error is not significant (P <0.05).