PERSISTENCE AND STABILITY IN A RATIO-DEPENDENT FOOD-CHAIN SYSTEM WITH TIME DELAYS
Xu Rui Feng Hanying Yang Pinghua Wang ZhiqiangDept. of Math.,Mechanical Engineering College,Shijiazhuang 050003.
A delayed three-species ratio-dependent predator-prey food-chain model without dominating instantaneous negative feedback is investigated. It is shown that the system is permanent under some appropriate conditions,and sufficient conditions are obtained for the local asymptotic stability of a positive equilibrium of the system.
【CateGory Index】： O175