نوع مقاله : مقاله کامل علمی - پژوهشی
نویسندگان
1 دانشکده شیلات و علوم محیطی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران
2 گروه تولید و بهره برداری آبزیان. دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
3 مدیریت امور ماهیان خاویاری استان گلستان
4 محقق دانشکده علوم
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژه‌ها [English]
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