Dispersal, disease and life-history evolution

被引：86
|
作者：
Castillo-Chavez, C
Yakubu, AA
机构：
[1] Cornell Univ, Biometr Dept, Ithaca, NY 14853 USA
[2] Howard Univ, Dept Math, Washington, DC 20059 USA
[3] Cornell Univ, Ctr Math Appl, Ithaca, NY 14853 USA
来源：
MATHEMATICAL BIOSCIENCES | 2001年 / 173卷 / 01期
基金：
美国国家科学基金会;
关键词：
bistability; dispersal; geometric growth; metapopulation; patches;
D O I：
10.1016/S0025-5564(01)00065-7
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Discrete-time susceptible-infective-susceptible (S-I-S) disease transmission. models can exhibit bistability (alternative stable equilibria) over a wide range of parameter values. We illustrate the richness generated by such 'simple' non-linear systems in the study of two patch epidemic models with disease-enhanced or disease-suppressed dispersal. Dispersal between patches can have a profound impact on local patch disease dynamics. In fact, dispersal between patches may give rise to bistability in parameter regimes without bistability in single patch models. (C) 2001 Elsevier Science Inc. All rights reserved.
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页码：35 / 53
页数：19
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