Les modèles bio-économiques en halieutique : démarches et limites

The bio-economic models in fishing : approaches and limits Bio-economic modelling technics for jisheries have been developed from the late jïfties. They are currently based on neo-classic economic therory. Their use has led to strong theoretical development in the Jield ofjsheries management, but they are utterly lacking qf pratical sense because the basic assumptions are not sujjïciently close to the reality. The main types of models are presented (statie and dynamic. determinist and random, simulation and optimisation) and their bounds are discussed.