摘要: The development of simple models for describing the population dynamics species with overlapping generations is briefly described. paper then presents a minimally complex simulation model tsetse populations in which seasonally varying density-independent mortality, generally applied only to adult stage, combined density dependence acting on both puparia and adults. Density regulates size within limits determined by an interaction between strength density-dependent relationships variability seasonal independence. Population data sets Glossina palpalis G. morsitans Nigeria, pallidipes Kenya are adequately described model. Relationships discovered mortality climatic variables Lambwe Valley set allow predictions changes other siteson basis their conditions. Attempts predict Somalia highlight difficulties this exercise. A tsetse’s demographic response climate may vary from region region, making extensive local difficult. There seems, however, no need make more describe observed populations.