Abstract
The objective of this paper is to systematically study the qualitative properties of a ratio-dependent one-prey two-predator model. We show that the dynamics outcome of the interactions are very sensitive to parameter values and initial data. Specifically, we show the interactions can lead to all the following possible outcomes: 1) competitive exclusion; 2) total extinction, i.e., collapse of the whole system; 3) coexistence in the form of positive steady state; 4) coexistence in the form of oscillatory solutions; and 5) introducing a friendly and better competitor can save a otherwise doomed prey species. These results reveal far richer dynamics compared to similar prey dependent models. Biological implications of these results are discussed.
Original language | English (US) |
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Pages (from-to) | 377-396 |
Number of pages | 20 |
Journal | Journal Of Mathematical Biology |
Volume | 43 |
Issue number | 5 |
DOIs | |
State | Published - Nov 2001 |
Keywords
- Coexistence
- Competitive exclusion
- Extinction
- Limit cycle
- Ratio-dependent predator-prey model
ASJC Scopus subject areas
- Modeling and Simulation
- Agricultural and Biological Sciences (miscellaneous)
- Applied Mathematics