Dynamic analysis of a mosquito population suppression model based on stage structure

The biological control of mosquito-borne populations was investigated by developing stage-structured population dynamics models based on the sterile insect technique. The ecological regulation mechanisms of constant continuous release and periodic impulsive release of sterile mosquitoes were systematically explored. The key threshold conditions influencing population dynamics were examined， revealing the patterns of population extinction and sustained survival under different release strategies. The theoretical results and numerical simulations indicated that appropriately extending the pulse release interval of sterile mosquitoes could significantly reduce the frequency of on-site releases while maintaining control efficacy， which can provide references for balancing control effectiveness and implementation costs in practical applications.