An Ecological Network Analysis Based on The Lotka-Volterra Model

Changes in adaptive sex ratio is a phenomenon in ecology and evolutionary biology, and the growth rate of the lampreys is affected by food availability, which directly affects the sex ratio of the lampreys. In order to investigate the effects of changes in the sex ratio of lampreys on the stability of the ecosystem, this paper takes phytoplankton, lampreys and their predators as the objects of study, and assesses the stability of the ecosystem by measuring the Shannon diversity index. The results shows that an increase in male sex ratio contributed to the stability of the ecosystem under specific parameters. In addition, this paper investigated the potential effects of changes in the sex ratio of lampreys on their parasite populations and introduced the parasites into an ecological network model. In this paper, this paper found that changes in parasite abundance may give certain parasites an advantage. These findings contribute to a better understanding of the effects of sex ratio changes on ecosystem stability and provide an important reference for ecological conservation and management.