虫口模型是1976年数学生态学家R. May在英国的《自然》杂志上发表的，以模拟生态学昆虫繁殖的动力学行为。昆虫繁殖可以作为动力学系统，系统由状态量与动态特性给出。状态量为描述系统当时状态的量。动态特性为状态演化规则，可以是牛顿方程或者其他方程、或计算规则而定(The insect mouth model was published in 1976 by R. May, a mathematical ecologist in the British journal Nature, to simulate the dynamic behavior of ecological insects. Insect reproduction can be used as a dynamic system, and the system is given by state and dynamic characteristics. The state quantity is the amount that describes the state of the system at that time. The dynamic characteristic is the rule of state evolution, which can be a Newton equation or other equation or calculation rule.)