期刊
APPLIED MATHEMATICAL MODELLING
卷 34, 期 9, 页码 2477-2483出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2009.11.012
关键词
Periodic solutions; Predator-prey system; Functional response
资金
- Natural Science Foundation of China [10801056, 10971057]
- Natural Science Foundation of Guangdong [8451063101000730]
This note investigates the existence of periodic solutions for discrete semi-ratio-dependent predator-prey models with functional response. New criteria are derived in which this system with prey-dependent (monotonic or non-monotonic) and predator-dependent functional response bounded by polynomials in R always has at least one omega-periodic solution, which improves and extends many previous results [1-5]. Some interesting numerical examples are given to illustrate our results. (C) 2009 Elsevier Inc. All rights reserved.
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