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Investigating the dynamics of Lotka$-$Volterra model with disease in the prey and predator species | ||
| International Journal of Nonlinear Analysis and Applications | ||
| مقاله 49، دوره 12، شماره 1، مرداد 2021، صفحه 633-648 اصل مقاله (364.79 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2021.4867 | ||
| نویسندگان | ||
| Atena Ghasemabadi* 1؛ Mohammad Hossien Rahmani Doust2 | ||
| 1Esfarayen University of Technology, Esfarayen, North Khorasan, Iran | ||
| 2Department of Mathematics, University of Neyshabur, Adib BLVD, Neyshabur, Iran | ||
| تاریخ دریافت: 20 آذر 1396، تاریخ بازنگری: 24 آبان 1397، تاریخ پذیرش: 12 اسفند 1397 | ||
| چکیده | ||
| In this paper, a predator$-$prey model with logistic growth rate in the prey population was proposed. It included an SIS infection in the prey and predator population. The stability of the positive equilibrium point, the existence of Hopf and transcortical bifurcation with parameter $a$ were investigated, where $a$ was regarded as predation rate. It was found that when the parameter $a$ passed through a critical value, stability changed and Hopf bifurcation occurred. Biologically, the population is positive and bounded. In the present article, it was also shown that the model was bounded and that it had the positive solution. Moreover, the current researchers came to the conclusion that although the disease was present in the system, none of the species would be extinct. In other words, the system was persistent. Important thresholds, $R_{0}, R_{1}$ and $R_{2}$, were identified in the study. This theoretical study indicated that under certain conditions of $R_{0}, R_{1}$ and $R_{2}$, the disease remained in the system or disappeared. | ||
| کلیدواژهها | ||
| Differential Equations؛ Threshold؛ Prey$-$Predator Model؛ Global Stability؛ SIS Disease | ||
| مراجع | ||
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