English

Global existence and stabilization in a diffusive predator-prey model with population flux by attractive transition

Analysis of PDEs 2022-03-29 v1

Abstract

The diffusive Lotka-Volterra predator-prey model \begin{eqnarray*} \left\{ \begin{array}{rcll} u_t &=& \nabla\cdot \left[ d_1\nabla u + \chi v^2 \nabla \Big(\dfrac{u}{v}\Big)\right] +u(m_1-u+av), \qquad & x\in\Omega, \ t>0, \\ v_t &=& d_2\Delta v+v(m_2-bu-v), \qquad & x\in\Omega, \ t>0, \end{array} \right. \end{eqnarray*} is considered in a bounded domain ΩRn\Omega\subset\mathbb{R}^n, n{2,3}n \in\{2,3\}, under Neumann boundary condition, where d1,d2,m1,χ,a,bd_1, d_2, m_1, \chi, a, b are positive constants and m2m_2 is a real constant. The purpose of this paper is to establish global existence and boundedness of classical solutions in the case n=2n=2 and global existence of weak solutions in the case n=3n=3 as well as show long-time stabilization. More precisely, we prove that the solutions (u(,t),v(,t))(u(\cdot,t), v(\cdot,t)) converge to the constant steady state (u,v)(u_*, v_*) as tt \to \infty, where u,vu_*, v_* solves u(m1u+av)=v(m2buv)=0u_*(m_1-u_*+av_*)=v_*(m_2-bu_*-v_*)=0 with u>0u_* > 0 (covering both coexistence as well as prey-extinction cases).

Keywords

Cite

@article{arxiv.2203.13958,
  title  = {Global existence and stabilization in a diffusive predator-prey model with population flux by attractive transition},
  author = {Frederic Heihoff and Tomomi Yokota},
  journal= {arXiv preprint arXiv:2203.13958},
  year   = {2022}
}