Homoclinic orbits in predator-prey systems with a nonsmooth prey growth rate
Authors:
Jitsuro Sugie and Kyoko Kimoto
Journal:
Quart. Appl. Math. 64 (2006), 447-461
MSC (2000):
Primary 34C37, 37N25, 70K44; Secondary 34C05, 34D23, 92D25
DOI:
https://doi.org/10.1090/S0033-569X-06-01031-6
Published electronically:
August 15, 2006
MathSciNet review:
2259048
Full-text PDF Free Access
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Additional Information
Abstract: This paper deals with Gause-type predator-prey models with a non-smooth prey growth rate. Our models have a unique positive equilibrium and are under the influence of an Allee effect. A necessary and sufficient condition is given for the existence of homoclinic orbits whose $\alpha$- and $\omega$-limit sets are the positive equilibrium. The argument used here is based on some results of a system of Liénard type. The relation between homoclinic orbits and the Allee effect is clarified. A simple example is included to illustrate the main result. Some global phase portraits are also attached.
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Cheng1K.-S. Cheng, Uniqueness of a limit cycle for a predator-prey system, SIAM J. Math. Anal. 12, 541–548 (1981).
Cheng2K.-S. Cheng, S.-B. Hsu and S.-S. Lin, Some results on global stability of a predator-prey system, J. Math. Biol. 12, 115–126 (1981).
FreedmanH. I. Freedman, Deterministic Mathematical Models in Population Ecology, Marcel Dekker, New York, 1980.
GauseG. F. Gause, The Struggle for Existence, Williams and Wilkins, Baltimore, 1934.
HollingC. S. Holling, The components of predation as revealed by a study of small-mammal predation of the European pine sawfly, Canad. Entomol. 91, 293–320 (1959).
HsuS.-B. Hsu, On global stability of a predator-prey system, Math. Biosci. 39, 1–10 (1978).
IvlevV. S. Ivlev, Experimental Ecology of the Feeding of Fishes, Yale University Press, New Haven, CT, 1961.
KazarinoffN. D. Kazarinoff and P. van den Driessche, A model predator-prey system with functional response, Math. Biosci. 39, 125–134 (1978).
Kooij1R. E. Kooij and A. Zegeling, A predator-prey model with Ivlev’s functional response, J. Math. Anal. Appl. 198, 473–489 (1996).
Kooij2R. E. Kooij and A. Zegeling, Qualitative properties of two-dimensional predator-prey systems, Nonlinear Anal. 29, 693–715 (1997).
Kuang1Y. Kuang, Nonuniqueness of limit cycles of Gause-type predator-prey systems, Appl. Anal. 29, 269–287 (1988).
Kuang2Y. Kuang, Global stability of Gause-type predator-prey systems, J. Math. Biol. 28, 463–474 (1990).
Kuang3Y. Kuang and H. I. Freedman, Uniqueness of limit cycles in Gause-type models of predator-prey systems, Math. Biosci. 88, 67–84 (1988).
MayR. M. May, Stability and Complexity in Model Ecosystems, Princeton University Press, Princeton, 1974.
RosenzweigM. L. Rosenzweig and R. H. MacArthur, Graphical representation and stability conditions of predator-prey interactions, Am. Naturalist. 97, 209–223 (1963).
Sugie1J. Sugie, Two-parameter bifurcation in a predator-prey system of Ivlev type, J. Math. Anal. Appl. 217, 349–371 (1998).
Sugie2J. Sugie, Uniqueness of limit cycles in a predator-prey system with Holling-type functional response, Quart. Appl. Math. 58, 577–590 (2000).
Sugie3J. Sugie, Homoclinic orbits in generalized Liénard systems, J. Math. Anal. Appl. 309, 211–226 (2005).
Sugie4J. Sugie and T. Hara, Existence and non-existence of homoclinic trajectories of the Liénard system, Discrete Contin. Dynam. Systems 2, 237–254 (1996).
Sugie5J. Sugie and M. Katayama, Global asymptotic stability of a predator-prey system of Holling type, Nonlinear Anal. 38, 105–121 (1999).
Sugie6J. Sugie, R. Kohno and R. Miyazaki, On a predator-prey system of Holling type, Proc. Amer. Math. Soc. 125, 2041–2050 (1997).
Sugie7J. Sugie, K. Miyamoto and K. Morino, Absence of limit cycles of a predator-prey system with a sigmoid functional response, Appl. Math. Lett. 9, 85–90 (1996).
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Additional Information
Jitsuro Sugie
Affiliation:
Department of Mathematics and Computer Science, Shimane University, Matsue 690-8504, Japan
MR Author ID:
168705
Email:
jsugie@riko.shimane-u.ac.jp
Kyoko Kimoto
Affiliation:
Department of Mathematics and Computer Science, Shimane University, Matsue 690-8504, Japan
Keywords:
Gause-type predator-prey system,
Allee effect,
homoclinic orbits,
global asymptotic stability,
Liénard system
Received by editor(s):
July 20, 2005
Published electronically:
August 15, 2006
Additional Notes:
The first author was supported in part by Grant-in-Aid for Scientific Research 16540152
Dedicated:
Dedicated to Professor Tadayuki Hara on the occasion of his 60th birthday
Article copyright:
© Copyright 2006
Brown University
The copyright for this article reverts to public domain 28 years after publication.