Hybrid Role Modeling of Lampreys Sex Ratio Environment Based on Lotka-Volterra Model

Abstract

In this paper, the Lotka-Volterra model was used to study the sex ratio of lampreys under different food resources. The results showed that the male ratio of lampreys was relatively low in the environment with abundant food resources. In environments where food resources were scarce, the proportion of males increased significantly. In addition, the study also established a mixed-role model of lampreys’ sex ratio environment. By comparing the reproductive efficiency of lampreys’ populations under different sex ratio conditions, it was found that the reproductive efficiency of lampreys’ populations with sex ratio adaptation was higher in the short term, but in the long term, the fluctuation of sex ratio would reduce the reproductive efficiency of lampreys’ populations. Finally, the effects of sex ratio changes on ecosystem stability of lampreys were analyzed by constructing a food web model with multiple trophic levels. The results showed that the fluctuation of lampreys’ sex ratio had a stabilizing effect on ecosystem stability.