On a reaction-diffusion model for sterile insect release method on a bounded domain  

作　　者：Weihua Jiang Xin Li XingfuZou 

机构地区：[1]Department of Mathematics Harbin Institute of TechnologyHarbin~ Heilongjiang 150001~ P. R. China [2]Department of Applied MathemaLies University of Western OntarioLondon, Ontario N6A 5B7, Canada

出　　处：《International Journal of Biomathematics》2014年第3期119-135,共17页生物数学学报（英文版）

基　　金：Part of this work was completed when the second author was visiting the Univer- sity of Western Ontario, and he would like to thank the staff in the Department of Applied Mathematics for their help and thank the University for its excellent facilities and support during his stay. The second author was supported by China Scholarship Council, partially sup- ported by NNSF of China （No. 11031002）, by the Heilongjiang Provincial Natural Science Foundation （No. A200806）, and by the Program of Excellent Team and the Science Research Foundation in Harbin Institute of Technology.

摘　　要：We consider a system of partial differential equations that describes the interaction of the sterile and fertile species undergoing the sterile insect release method （SIRM）. Unlike in the previous work [M. A. Lewis and P. van den Driessche, Waves of extinction from sterile insect release, Math. Biosci. 5 （1992） 221 247] where the habitat is assumed to be the one-dimensional whole space ~, we consider this system in a bounded one- dimensional domain （interval）. Our goal is to derive sufficient conditions for success of the SIRM. We show the existence of the fertile-free steady state and prove its stability. Using the releasing rate as the parameter, and by a saddle-node bifurcation analysis, we obtain conditions for existence of two co-persistence steady states, one stable and the other unstable. Biological implications of our mathematical results are that： （i） when the fertile population is at low level, the SIRM, even with small releasing rate, can successfully eradicate the fertile insects; （ii） when the fertile population is at a higher level, the SIRM can succeed as long as the strength of the sterile releasing is large enough, while the method may also fail if the releasing is not sufficient.

关 键 词：Sterile insect release method diffusion saddle-node bifurcation upper lowersolution method. 

分 类 号：O174.56[理学—数学] S433.89[理学—基础数学]