Dynamics of the future state of fishing of Persian sturgeon (Acipenser persicus, Borodin 1897) in the southern shores of the Caspian Sea

Document Type : scientific research article

Authors

1 Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgān, Iran

2 Aquatic production and exploitation group. Faculty of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

3 Management of Sturgeon affairs, Golestan, Iran

4 دانشگاه دیکین

10.22069/japu.2024.21939.1832

Abstract

This study was carried out with the aim of the dynamics of the future situation of the fishing of Acipenser persicus, Borodin 1897 in the southern shores of the Caspian Sea. In the study of the Iranian sturgeon population based on the exponential growth rate and the effect of the environmental parameters of wind speed (at 6 pm) and wind direction (at 12 noon) using a dynamic model, the results showed that according to the initial population size of Iranian sturgeon equivalent to 153 pieces in 2017; Continuing the current fishing trend (based on the 0.4 harvest rate scenario), the process of destruction of this species will continue and it will become extinct by 2050. Whereas, the assumption of a fixed rate of harvest from the population is equal to 0.2 per year (reducing sturgeon catch to half the amount caught in the current conditions); until the next 30 years (2050), the amount of harvesting of Iranian fish stocks will increase until the stocks of this species have the ability to fully restore themselves. Therefore, the stocks of this type of fish need more and more effective protection and support from managers and officials.

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Journal of Utilization and Cultivation of Aquatics
Volume 14, Issue 1
April 2025
Pages 55-68

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