Forecasting the catch of the stocks of Persian sturgeon (Acipenser persicus Borodin 1897) in the southern shores of the Caspian Sea using DB-SRA and dynamic model

This study aims to analyze the fishing trend and predict the future catch of Persian sturgeon (Acipenser persicus) stocks by DB-SRA and dynamic models in the southern shores of the Caspian Sea. The results showed that, according to the size of the initial population in 2018, equal to 153 spicemens (mean weigth 30kg); assuming a constant rate of catch from the population equivalent to 0.2 per year (half of the current catch); until the next 30 years (2050), the amount of catching of Persian sturgeon will increase until the stocks of this species have the ability to fully restore themselves. While assuming the current catch rate, there has been a sharp decrease in the catch of fish in the southern shores of the Caspian Sea; it is estimated that the stocks of this type of sturgeon fish will be extinct by 2050.