Modeling the Impact of Lamprey Population Dynamics on Aquatic Food Webs: A Leslie and Lotka-Volterra Approach

Abstract

In recent years, the widely distributed invasive parasitic species of marine lampreys have had a profound impact on host populations and the entire aquatic ecosystem through their unique survival and reproduction strategies, highlighting the importance of species interactions and ecological balance in ecosystems. In response to this, this study establishes a species growth model for lampreys based on the Leslie model from the perspective of gender ratio changes. The idea of the Lotka-Volterra predator-prey model is used to establish the food web centered on lamprey and the fluctuation mode model of various groups in it. Based on the model results, we conclude that the growth trend of the lamprey itself is difficult to be affected by other populations, but the lamprey population will have serious adverse effects on other species. The results of this model are in good agreement with the actual situation, and have profound significance in laying the foundation for the study of the community characteristics of lampreys and their related ecosystems.