一类食饵具有阶段结构的时滞Predator-Prey系统的周期解(英文)  

Periodic Positive Solution of a Predator-Prey System with Stage-Structure for Prey and Time Delay

作　　者：张少林[1] 韦明俊[1] 

机构地区：[1]浙江科技学院理学院,杭州310023

出　　处：《浙江科技学院学报》2006年第1期1-7,共7页Journal of Zhejiang University of Science and Technology

基　　金：SupportedbytheResearchFoundationofEducationDepartmentofZhejiangProvince(20038049)

摘　　要：研究了一类时滞Predator-Prey系统,其中Prey种群是具有两个生命阶段的种群,即幼年阶段和成年阶段。Predator种群只能捕食Prey幼年种群。通过应用Gaines和Mawhin重合度理论的连续函数定理,给出了系统正周期解存在的充分条件。A Predator Prey system with time delay is considered. There are, immature and mature, two stage for prey species in the system. By using the continuation theorem of Gaines and Mawhin＇s coincidence degree theory, a sufficient condition is derived for the existence periodic positive solution.

关 键 词：重合度 Predator—Prey系统 正周期解 阶段结构 

分 类 号：O175.5[理学—数学]