Journal of Applied Nonlinear Dynamics
        
        
        
        
        
            Complex Dynamics of a Prey-predator System Incorporating Functional Response Dependent Prey Refuge with Harvesting  
        
         
                 Journal of Applied Nonlinear Dynamics 10(3) (2021) 493--512  | DOI:10.5890/JAND.2021.09.010
            
            
             Soovoojeet Jana$^1$ , Srabani Guria$^2$, Abhijit Ghorai$^3$, Tapan Kumar Kar$^4$
        
         $^1$ Department of Mathematics, Ramsaday College, Amta-711401, Howrah, West Bengal, India
 $^2$ Department of Mathematics, NSHM Knowledge Campus, Durgapur-713212, West Bengal, India
 $^3$ Department of Mathematics, Technical University of Munich, Germany
 $^4$ Department of Mathematics, IIEST, Shibpur, Howrah-711103, West Bengal, India
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        Abstract
        
             In this paper, we consider a prey-predator system allowing prey refuge and harvesting the prey species only. It is investigated under which condition the system has no limit cycle. An optimal harvesting policy is also formulated using Pontryagin's Maximum Principle. A comparison study have been done with the model in which the per individual prey refuge taken as constant. We investigate one and two parametric bifurcations thoroughly. Here we also discuss the bi-stability of the model in brief when the interior equilibrium is not unique. Some numerical simulations are given to verify our analytic works.  
                           
        
        Acknowledgments
            Research of T. K. Kar is supported by the Council of Scientific  and Industrial Research(CSIR), India (File No.25(300)/19/EMR-II, dated:16th May, 2019). Moreover, the authors are very much grateful to the anonymous reviewers and the editor Albert C.J. Luo for their constructive comments and valuable suggestions to improve the quality and presentation of the manuscript significantly.
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