Abstract
This paper presents a qualitative study of a predator–prey interaction system with the functional response proposed by Cosner et al. (Theor Popul Biol 56:65–75, 1999). The response describes a behavioral mechanism which a group of predators foraging in linear formation searches, contacts and then hunts a school of prey. On account of the response, strong Allee effects are induced in predators. In the system, we determine the existence of all feasible nonnegative equilibria; further, we investigate the stabilities and types of the equilibria. We observe the bistability and paradoxical phenomena induced by the behavior of a parameter. Moreover, we mathematically prove that the saddle-node, Hopf and Bogdanov–Takens types of bifurcations can take place at some positive equilibrium. We also provide numerical simulations to support the obtained results.
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Acknowledgements
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT [NRF-2017R1A2B1011902 to W. Ko]. The authors would like to thank anonymous reviewers for their constructive comments and suggestions which helped to improve the quality of this manuscript.
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Ryu, K., Ko, W. & Haque, M. Bifurcation analysis in a predator–prey system with a functional response increasing in both predator and prey densities. Nonlinear Dyn 94, 1639–1656 (2018). https://doi.org/10.1007/s11071-018-4446-0
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DOI: https://doi.org/10.1007/s11071-018-4446-0