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The impact of provision of additional food to predator in predator–prey model with combined harvesting in the presence of toxicity

  • Reenu RaniEmail author
  • Sunita Gakkhar
Original Research
  • 120 Downloads

Abstract

In this article, the global dynamics of a predator–prey system incorporating combined harvesting has been investigated. The additional food is being provided to the predator, accordingly, modified Holling type-II functional response is considered in the model. The presence of toxicants affect the quality of food for both the species, reducing their growth. The steady states of the system are obtained under some suitable conditions. The local and global dynamics are explored. The conditions for permanence and existence for bionomic equilibrium of the system have been investigated. It is also observed that the system exhibits local bifurcations i.e., transcritical, Hopf, saddle-node as well as global bifurcations i.e., Bogdanov–Takens bifurcation and generalized Hopf bifurcation with respect to the suitable set of parameters. Optimal harvesting policy is discussed with the help of Pontryagin’s maximum principle to preserve both the species from extinction and maintain a sustainable fishery. Numerical simulations are carried out for the suitable choice of parameters.

Keywords

Predator–prey model Additional food Stability Local and global bifurcations Persistence Bionomic equilibrium Optimal harvesting policy 

Mathematics Subject Classification

39A30 37N25 93A30 93C10 

Notes

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Copyright information

© Korean Society for Computational and Applied Mathematics 2019

Authors and Affiliations

  1. 1.Department of Mathematics, School of Advanced SciencesVIT UniversityVelloreIndia
  2. 2.Department of MathematicsIndian Institute of Technology RoorkeeRoorkeeIndia

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