Abstract
A linearized oscillation theorem due to Kulenović, Ladas and Meimaridou (1987,Quart. appl. Math. XLV, 155–164) and an extension of it are applied to obtain the oscillation of solutions of several equations which have appeared in population dynamics. They include the logistic equation with several delays, Nicholson's blowflies model as described by Gurney, Blythe and Nisbet (1980,Nature, Lond. 287, 17–21) and the Lasota-Wazewska model of the red blood cell supply in an animal. We also developed a linearized oscillation result for difference equations and applied it to several equations taken from the biological literature.
Similar content being viewed by others
Literature
Gopalsamy, K. 1986. “Oscillations in a Delay-logistic Equation.”Quart. appl. Math. XLIV, 447–461.
Gurney, W. S. C., S. P. Blythe and R. M. Nisbet. 1980. “Nicholson's Blowflies Revisited.”Nature, Lond. 287, 17–21.
Hunt, B. R. and J. A. Yorke. 1984. “When all Solutions of\(x' = - \sum {_{i = 1}^n q} _i (t)x(t - T_i (t))\) Oscillate.”J. diff. Eqns 53, 139–145.
Kakutani, S. and L. Markus. 1958. “On the Non-linear Difference-differentiual Equation\(\dot Y(t) = \left[ {A - By(t - \tau )} \right]y(t)\).”Contribution to the Theory of Nonlinear. Oscillations, Vol. 4, pp. 1–18. Princeton University Press.
Kaplan, J. L. and J. A. Yorke. 1977. “On the Nonlinear Differential Delay Equation\(\dot x(t) = - f(x(t),x(t - 1))\).”J. diff. Eqns. 23, 293–314.
Kulenović, M. R., G. Ladas and A. Meimaridou. 1987. “On Oscillation of Nonlinear Delay Differential Equations.”Quart. appl. Math. XLV, 155–164.
Ladas, G. and I. P. Stavroulakis. 1982. Oscillations Caused by Several Retarded and Advanced Arguments.”J. diff. Eqns 44, 134–152.
May, R. M. 1975. “Biological Populations Obeying Difference Equations: Stable Points, Stable Cycles and Chaos.”J. theor. Biol. 51, 511–524.
— and G. F. Oster. 1976. “Bifurcations and Dynamic Complexity in Simple Ecological Models.”Am. Nat. 110, 537–599.
Wright, E. M. 1955. “A Nonlinear Difference-differential Equation.”J. Reine Angew. Math. 194, 66–87.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kulenović, M.R.S., Ladas, G. Linearized oscillations in population dynamics. Bltn Mathcal Biology 49, 615–627 (1987). https://doi.org/10.1007/BF02460139
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02460139