MATHunesa: Jurnal Ilmiah Matematika
Vol. 12 No. 3 (2024)

BIFURKASI HOPF PADA MODEL DINAMIK S-I-P DENGAN PENYAKIT PADA POPULASI PREY DAN FUNGSI RESPON HOLLING TYPE II DENGAN PEMANENAN PADA PREY

Waldhani, Gesti Essa (Unknown)
Chalimatusadiah, Chalimatusadiah (Unknown)



Article Info

Publish Date
12 Jun 2024

Abstract

In this paper, a dynamic S-I-P model with disease in the prey population and Holling type II functional response with harvesting in prey and time-delay were discussed. Model analysis is carried out by determining fixed points, then analyzing the stability of the fixed points and discussing the existence of the Hopf bifurcation. Another modification given to the model is the use of time delays. Delay time is the time needed for a predator to hunt its prey. The first case is a model without time delay, it is obtained that 2 fixed points are unstable and 2 fixed points are stable. One of them is the interior fixed point tested with the Routh-Hurwitz criteria. The second case is a model with a delay time, the critical delay value is obained. Hopf bifurcation occurs when the delay time value is equal to the critical delay value and also fulfills the transversality condition. Observations on the model simulation are carried out by varying the value of the delay time. When the Hopf bifurcation occurs, the graph on the solution plane shows a constant oscillatory movement. If the value of the delay time given is less than the critical value of the delay, the controlled system solution goes to a balanced state. Then when the delay time value is greater than the critical delay value, the system solution continues to fluctuate causing an unstable system condition.

Copyrights © 2024






Journal Info

Abbrev

mathunesa

Publisher

Subject

Mathematics

Description

MATHunesa is a mathematical scientific journal published by the Department of Mathematics, Faculty of Mathematics and Natural Sciences, The State University of Surabaya with e-ISSN 2716-506X and p-ISSN 2301-9115. This journal is published every four months in April, August, and December. One volume ...