Competitive Model Analysis Based on Volterra Prey-Predator Model and Multisubjective Model

In this paper, we analyzed the lamprey ecosystem based on the Volterra predation-prey model and the multispecies ecological model. Initially, a Volterra predationprey model was developed to select specific organisms as food and predators to adapt to the larger ecosystem. Considering sex differences in predation rates and vulnerability, MATLAB was used to construct dynamic growth equations. The parameters were varied to explore their effects on the model. Finally, we modeled the effects of parameter changes on the system. And we tested the stability of the ecosystem based on the eigenvalues of the Jacobi matrix. In conclusion, the sex ratio of lamprey affects the stability and resource dependence of the ecosystem to a certain extent.