How to block the reinvasion of mosquito populations using the sterile insect technique? Insights from modelling strategic barrier
摘要
The Sterile Insect Technique (SIT), which involves releasing large numbers of sterilized male mosquitoes, has been used to suppress or even eradicate wild mosquito populations. In this paper, we develop a reaction-diffusion model to evaluate the feasibility of deploying SIT as a barrier against reinvasion in areas where mosquitoes have been eliminated. We first prove the existence and uniqueness of solutions to the model. Through rigorous mathematical analysis, we demonstrate that SIT can effectively block reinvasion if it is implemented after the eradication of wild populations. Furthermore, numerical simulations reveal key insights: Increasing the width of the sterile male release zone can reduce economic costs, and incorporating mosquito developmental stage into eradication strategies enhances efficiency. Our findings may provide theoretical and practical guidance for optimizing SIT-based mosquito control programs.