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Global stability and bifurcation analysis of a delay induced prey-predator system with stage structure

Chakraborty, K and Haldar, S and Kar, TK (2013) Global stability and bifurcation analysis of a delay induced prey-predator system with stage structure. Nonlinear Dynamics, 73 (3). pp. 1307-1325. ISSN 1573-269X

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Abstract

This paper describes a delay induced prey-predator system with stage structure for prey. The dynamical characteristics of the system are rigorously studied using mathematical tools. The coexistence equilibria of the system is determined and the dynamic behavior of the system is investigated around coexistence equilibria. Sufficient conditions are derived for the global stability of the system. The optimal harvesting problem is formulated and solved in order to achieve the sustainability of the system, keeping the ecological balance, and maximize the monetary social benefit. Maturation time delay of prey is incorporated and the existence of Hopf bifurcation phenomenon is examined at the coexistence equilibria. It is shown that the time delay can cause a stable equilibrium to become unstable and even a switching of stabilities. Moreover, we use normal form method and center manifold theorem to examine the nature of the Hopf bifurcation. Finally, some numerical simulations are given to verify the analytical results, and the system is analyzed through graphical illustrations.

Item Type: Article
Additional Information: Copyright of this article belongs to Springer.
Uncontrolled Keywords: Stage structure;Maturation delay;Switching stability Hopf bifurcation;Optimal harvesting
Subjects: Oceanography > marine biology
Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 14 Dec 2013 06:18
Last Modified: 14 Dec 2013 06:18
URI: http://moeseprints.incois.gov.in/id/eprint/108

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