Fig. 5. 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 sample size n. 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 (all as in Fig. 4). Other selected parameter values are N=100000, s=10^{4.5}. For these parameter values, posttreatment sampling at a level of 20% of the consignment (i.e., 20,000 out of 100,000 fruits) brings about a reduction in the probability of introduction Pr(I) to approximately 0.1.
Image from Plant Health Progress article:
The Maximum Pest Limit Concept Explained
