MODELING THE HIBERNATION PHENOMENA OF INSECT PESTS

In this work, we are interested in the impact of climatic conditions and hibernation on the dynamics of insect pest populations. For this, we use an age-structured population dynamics model describing the biological cycle of the insect at its four stages of development (egg, larva, cocoon, adult). This model allows us to closely monitor the evolution of the population at the cocoon stage as a function of temperature, taking into account the fact that a part of the cocoon population always remains dormant. In the autonomous case, we present qualitative results on the asymptotic behavior of the model and illustrate these results with numerical simulations. We will use the developed model to simulate the dynamics of this pest population over a season with three different hibernation strategies, in order to highlight the evolution of the population as a function of climatic conditions and the different hibernation strategies of the insect.