پیش بینی وضعیت آینده صید ذخایر تاس‌ماهی ایرانی (Acipenser persicus, Borodin 1897) در سواحل استان گلستان با استفاده از مدل‌سازی پویا

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 نویسنده مسئول، دانشجوی دکتری بوم‌شناسی آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

2 نویسنده مسئول، استاد گروه شیلات، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

3 دانشیار گروه شیلات، دانشکده علوم دامی و شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

4 استادیار مرکز تحقیقات ذخایر آبزیان آب‌های داخلی استان گلستان، گرگان، ایران.

5 دانشیار گروه منابع آبزی، بخش تحقیقات ساحلی، دانشگاه علوم کشاورزی اپسالا، سوئد.

6 مرکز تحقیقات ذخایر آبزیان آب‌های داخلی استان گلستان، گرگان، ایران

7 اداره شیلات استان گلستان، گرگان، ایران.

چکیده

این پژوهش با هدف بررسی پیش بینی وضعیت صید تاس‌ماهی ایرانی (Acipenser persicus) در سواحل استان گلستان دریای خزر با استفاده از مدل پویایی انجام شد. نتایج حاصله بیانگر آن بود که مطابق مقدار اولیه جمعیت در سال 1387 برابر با 2500 قطعه ماهی، در صورت برداشت با نرخ حال حاضر، ذخایر این ماهی ارزشمند خاویاری تا 50 سال آینده از بین رفته؛ درحالیکه با در نظر گرفتن نرخ برداشت 2/0 در سال (تقریبا معادل نیمی از صید حال حاضر)، مقدار برداشت ذخایر ماهی قره برون سیر افزایشی خواهد داشت به نحوی که این ذخایر کاملاً توانایی بازسازی خودش را باز خواهد یافت.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Predicting the Future status of catching the stocks of Persian Sturgeon (Acipenser persicus, Borodin 1897) on the coasts of Golestan province by using Dynamic Modeling

نویسندگان [English]

  • Ali Rezamand 1
  • Rasoul Ghorbani 2
  • Hossein Rahmani 3
  • Abbasali Aghaei Moghaddam 4
  • Rahmat Naddafi 5
  • Fatemeh Abbasi 6
  • Mohsen Yahyaei 7
1 Corresponding Author, Ph.D. Student of Aquatic Ecology, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
2 Corresponding Author, Professor, Dept. of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
3 Associate Prof., Dept. of Fisheries, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
4 Assistant Prof. of Inland Waters Aquatic Stocks Research Center, Golestan, Iran.
5 Associate Prof., Dept. of Aquatic Resources, Department of Coastal Research, Uppsala University of Agricultural Sciences, Sweden.
6 Inland Waters Aquatic Stocks Research Center, Golestan,
7 Fisheries Department of Golestan, Gorgan, Iran.
چکیده [English]

This study used a dynamic model to predict the fishing status of the Persian Sturgeon (Acipenser persicus) along the coast of the Golestan province in the Caspian Sea. The findings indicated that based on the initial population in 2017 equal to 2500 samples of fish if harvested at the current rate, the stocks of this valuable sturgeon fish will be destroyed in the next 50 years. However, when considering the harvest rate of 0.2 per year (nearly half of the current catch), the amount of fish harvested will increase so that this stock will completely regain its ability to regenerate itself.

کلیدواژه‌ها [English]

  • Fishing Status
  • Harvest Rate
  • Persian Sturgeon
  • Caspian Sea
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