The sex ratio of lampreys changes with the environment will regulate its population, and the paper will explore the relationship between the sex ratio of lampreys and the ecosystem.First, in order to get the effect of different sex ratios of lampreys on the ecosystem, a food chain model was established, combining the Lotka-Volterra model as well as the improved logistic model to simulate the changes in the number of individual populations. The fourth-order Lungkuta method was used to solve the model to obtain the population changes of lampreys as well as its natural enemies and food sources, reflecting the effects of sex ratio changes on the whole ecosystem.Second, the paper study the advantages and disadvantages of lampreys population size. Through genetic inheritance modeling, we analyze the effects of genetics on lampreys sex and species numbers. Changes in sex ratio can affect the adaptive capacity of lampreys and the stability of the ecosystem. Third, in order to explore the influence of lampreys sex ratio on ecosystem stability, we established an ecosystem stability evaluation model by adding three indicators such as Shannon Wiener index, constructed a food chain model, and obtained the number of various populations as well as the degree of ecosystem stability by substituting into the quantitative model and stability indicators, respectively. The simulated annealing algorithm was used to find out the sex ratio when the ecosystem stability degree was maximized.

Penghuan Liu, Junchao Zhou, Xianghao Guo. A Study on the Relationship between the Sex Ratio of Seven Leaf Trees and Ecosystems. Academic Journal of Agriculture & Life Sciences (2024) Vol. 5 Issue 1: 94-101. https://doi.org/10.25236/AJALS.2024.050113.

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