研究了一类毒素环境中的食饵一捕食系统,通过运用Gaines和Mawhin延拓定理,得到系统周期解存在的一个充分条件.
A predator-prey model in a two-patch environment, in which one patch is polluted, is investigated.By using Gaines and Mawhin's continuation theorem of coincidence degree theory, sufficient conditions are derived for the existence of periodic solutions to the proposed model .