خصوصیات جمعیتی ماهی حلوا سیاه (Parastromateus niger (Bloch, 1795 در آب های شمالی دریای عمان (استان سیستان و بلوچستان)

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 دانشجوی کارشناسی‌ارشد تولید و بهره‌برداری آبزیان، دانشگاه دریانوردی و علوم دریایی چابهار، چابهار، ایران.

2 نویسنده مسئول، دانشیار فرآوری محصولات شیلاتی، دانشگاه دریانوردی و علوم دریایی چابهار، چابهار، ایران.

3 نویسنده مسئول، مرکز تحقیقات شیلاتی آب‌های دور، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، چابهار، ایران.

چکیده

خلیج فارس و دریای عمان در برگیرنده گونه‌های مختلفی از آبزیان می‌باشد، که در این میان حلوا سیاه دارای اهمیت بسیار زیادی بوده و از جمله ماهیانی است که در سال های گذشته میزان صید آن افزایش نشان می دهد. در این تحقیق روند صید و خصوصیات جمعیتی ماهی حلوا سیاه با جمع آوری اطلاعات از 4 منطقه تخلیه صید در سواحل استان سیستان و بلوچستان (دریای عمان) شامل پزم، کنارک، بریس و پسابندر طی فروردین تا اسفند 1399 تخمین زده شد. در مجموع بیش از چهارده هزار ماهی در ایستگاه های تحقیق، مورد بیومتری قرار گرفت. شاخص های رشد شامل طول بی نهایت cm 54 =L∞ ، ضریب رشد (yr-1) 36/0=K ، مرگ ومیر طبیعی ( (yr-152/0= M ، مرگ ومیر صیادی (yr-1) 27/1=F، مرگ و میر کل ( yr-1) 79/1=Z و ضریب بهره برداری (yr-1) 71 /0 E= و زمان طول صفر 39/0- to= محاسبه شد. نتایج بررسی نشان داد که میزان برداشت سالانه از ذخیره ماهی حلوا سیاه به حداکثر خود رسیده و هر گونه افزایش صید و تلاش صیادی ذخیره این گونه را تحت تاثیر قرار داده و میزان بهره برداری از آن را در دراز مدت با مشکل مواجه خواهد کرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Demographic characteristics of Black pomfret fish (Parastromateus niger, Bloch, 1795) in the southern waters of Oman Sea (Sistan and Baluchestan)

نویسندگان [English]

  • Ali Nadimi Ashkan Kamachaei 1
  • Ali Taheri 2
  • Seyed Ahmad Reza Hashemi 3
1 M.Sc. Student in Aquatics Production and Exploitation, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran.
2 Corresponding Author, Associate Prof. in Fishery Products Processing, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran.
3 Corresponding Author, Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Chabahar, Iran.
چکیده [English]

The Persian Gulf and the Oman Sea contain a variety of aquatic species. Among which, Parastromateus niger (Bloch, 1795), Black pomfret fishes are very important and, one of the tuna fish that has increased its catch in recent years. In this research during April to March 2020, trend catch and demographic characteristics and demographic characteristics of Black pomfret were estimated by collecting information from 4 catchment areas in the southern waters of Oman Sea (Sistan and Baluchestan) including Pozem, Konark, Beries and Pasabandar. In this study, more than 14,000 fish at the research stations were biometric and the growth parameters were infinite length of L∞ = 54 cm, growth factor K = 0.36 (yr-1), natural mortality M= 0.52 (yr-1), mortality and mortality (yr-1), F = 1.27, total mortality (yr-1), Z = 1.79 and exploitation coefficient (yr-1), E = 0.71, and the time zero was -0.39 for the years. This study shows that the annual harvest of Black pomfret stock has reached its maximum and any increase in fishing effort will affect this stock and will reduce the amount of exploitation in the long run.

کلیدواژه‌ها [English]

  • Parastromateus niger
  • Exploitation coefficient
  • Growth coefficient
  • Oman sea

مراجع

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مجله بهره برداری و پرورش آبزیان
دوره 12، شماره 2
تیر 1402
صفحه 77-88

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