Study on Sex Ratio of Lampreys Based on Logistic Regression Model

The sex ratio of lampreys is subject to fluctuations influenced by external environmental factors, and alterations in this ratio may exert a significant impact on the stability of the surrounding ecosystem. To assess the position of lampreys within the food chain and comprehend the consequences of sex ratio variations on other species and ecological balance, this passage constructed an ecosystem dynamics model, a sex ratio variation model, and a logistic model. Additionally, this passage integrated food chain action factors and environmental variables for comprehensive analysis. The findings indicate that sex ratio fluctuations in lampreys have profound implications for their reproduction rate, population density, genetic diversity, and the overall stability of the ecosystem. If one sex significantly outnumbers the other, competition will increase and reproductive rates may decline. Resources can be overused, affecting the population as a whole. If the proportion of males in lampreys increases, the number of species they prey on May decrease, affecting the balance of the food chain. If the number of a particular sex is significantly too high or too low, it can lead to a reduction in genetic diversity, thereby increasing the genetic risk to the population. Our research contributes to a better understanding of the process of lampreys sex ratio change and provides a systematic analytical framework for predicting ecosystem dynamics, which can maintain ecosystem stability and improve the sustainable management and protection of the natural environment.