Fig. 4. A graphical interpretation of equation of equation 21 from Yamamura and Katsumata (7). The solid bold line shows the probability of introduction Pr(I) as a function of the survival rate after treatment s. The parameters of the probability distribution of the proportion of fruit infested are a=0.523 and b=5.42, the parameter of the probability distribution of live larvae per infested fruit is v=0.924 (values calculated from data of Mangan et al., (6)), and the probability that an individual pest is female is f=0.5. Other selected parameter values are N=100000, n=0. For these parameter values, Pr(I) is approximately equal to 0.3 when the survival rate after treatment is probit nine level, s=10^{4.5}, indicated by a solid vertical line.
Image from Plant Health Progress article:
The Maximum Pest Limit Concept Explained
