This paper presents modeling and simulation works dedicated to the study of dynamics related to the pollination of oil palm by a weevil, Elaeidobius spp. The latter absolutely needs a male inflorescence to complete its life cycle. However, young plots (3-7 years old) mainly produce female inflorescences, which prevents the stabilization of the pollinator population, and thus a good fruit set. Thus, two questions underly this research : (1) What is the density per ha of male inflorescences required to keep the pollinator population above a threshold? (2) What is the optimal population size to maximize the fruit set ? In this scope, we here describe two complementary modeling approaches and discuss the first results we have obtained.