A pulse fishery model with closures as function of the catch: Conditions   for sustainability
  We present a model of single species fishery which alternates closed seasons with pulse captures. The novelty is that the length of a closed season is determined by the stock size of the last capture. The process is described by a new type of impulsive differential equations recently introduced. The main result is a fishing effort threshold which determines either the sustainability of the fishery or the extinction of the resource. 
Fernando C\'ordova-Lepe, Rodrigo del Valle, Gonzalo Robledo
q-bio.OT