Supplement 1. R source code for model simulations.

File List growthpop.txt Description This is a text file containing R-language source code for the model simulations. This code calculates the number of mated females in gypsy moth populations. The first section describes the mate location model fitted to experimental data. It gives the probability of a male to find a female at a given distance and given day after its emergence (rate0 for day of emergence, rate1 for the following day and rate2 for the next one). The second section provides the distribution of male and female emergence days. The third section contains the main function growthpop. Entry variables are: Negg the number of eggs initially introduced, fec the number of eggs per female, mortrate the mortality from egg to adult, diflarv the larval diffusion coefficient, and difadult the adult diffusion coefficient for males. Output variables are: Mat the number of mated females of the second generation, eggs the number of eggs laid by females of second generation, growth the 2-year population growth rate, and Fcomp a matrix containing the identification number of the female in column 1, the coordinates in column 2-3, the day of emergence in column 4, the mating success (0: not mated; 1: mated) in column 5, and the mating probability in column 6.