在自然界,寄生物和寄主之间存在着错综复杂的关系,在数量变动上常常相互影响、相互制约。Solomon(1949)等把寄生物和寄主相互间数量上的影响和制约关系归纳为两种反应,即数量反应和功能反应。数量反应系寄生物数量变化与寄主密度波动之间的关系,而功能反应系每个寄生物单位时间内寄生的寄主个体数与寄主密度之间的关系。本文报道有关苦 In nature, there is a complex relationship between parasites and hosts, which often influence each other and restrict each other in quantity. Solomon (1949) and so on the parasites and the host mutual influence on the quantitative and constraints between the two reactions, namely, the number of reactions and functional reactions. The number of reactions is the relationship between the number of parasites and the variation of host density, whereas the functional response is the relationship between the number of parasitized host individuals per unit time and host density per functional unit. This article reports about bitterness