Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Effort dynamics of a delay-induced prey-predator system with reserve

Chakraborty, K and Jana, S and Kar, TK (2012) Effort dynamics of a delay-induced prey-predator system with reserve. Nonlinear Dynamics, 70 (3). pp. 1805-1829. ISSN 1573-269X

Full text not available from this repository. (Request a copy)


This paper describes a prey-predator fishery system with prey dispersal in a two-patch environment, one of which is a free fishing zone and the other a protected zone. The proposed system reflects the dynamic interaction between the net economic revenue and the fishing effort used to harvest the population in presence of a suitable tax. Local as well as global stability of the system is analyzed. The optimal taxation policy is formulated and solved with the help of Pontryagin's maximal principle. The objective of the paper is to achieve the sustainability of the fishery, keeping the ecological balance, and maximize the monetary social benefit. The dynamical behavior of the delay system is further analyzed through incorporating discrete type gestational delay of predators, and the existence of Hopf bifurcation phenomenon is checked at the interior equilibrium point. Moreover, we use normal form method and center manifold theorem to examine the nature of the Hopf bifurcation. Theoretical results are verified with the help of numerical examples and graphical illustrations.

Item Type: Article
Additional Information: Copyright of this article belongs to Springer.
Uncontrolled Keywords: Prey–predator fishery;Gestational delay;Dynamic reaction Hopf bifurcation;Optimal taxation
Subjects: Oceanography > marine biology
Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 14 Dec 2013 05:36
Last Modified: 14 Dec 2013 05:36

Actions (login required)

View Item View Item