Abstract
Hydra effect is the positive effect which defines that the population of species increases with an increase in mortality. Hence, this paper encapsulates the positive effect of predator mortality in a predator-prey system via Turing patterns. First, the existence of equilibrium points is obtained and the condition for system stability is derived. Hopf-bifurcation analysis has been carried out for the feasible equilibrium point and the necessary condition for hydra effect in predators is derived. Further, in the presence of diffusion, the random movement of the species is studied to establish conditions for the system’s stability, and derive the Turing instability condition. Numerical simulation with Neumann boundary condition revealed that the system experienced the Turing instability and gave various Turing patterns such as spots, stripes, and mixed spots-stripes. Our investigation shows the patterns are sensitive to mortality rate and self-diffusion.
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Shivam, Kumar, M., Singh, T. et al. Positive Effect of Predator’s Mortality in Predator-Prey System via Turing Patterns. Braz J Phys 52, 159 (2022). https://doi.org/10.1007/s13538-022-01154-z
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DOI: https://doi.org/10.1007/s13538-022-01154-z