... time to maturity w is the natural death rate of the immature prey population d1 is the natural death rate of the mature prey population d2 is the natural death rate of the predator population The ... the death rate The population is birth pulse as intrinsic rate of natural increase and density dependence rate of predator population are denoted by a, b, respectively The pulse birth and impulsive ... Monographs and Surveys in Pure and Applied Mathematics, Longman Scientific & Technical, Harlow, UK, 1993 J Jiao, X Yang, S Cai, and L Chen, Dynamical analysis of a delayed predator-prey model with...