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Pelagic Fish Resources And Their Fishery Around Qatar

Authors: Sivasubramaniam, K.; Ibrahim, M. A.;

Pelagic Fish Resources And Their Fishery Around Qatar

Abstract

The existing pelagic fishery around Qatar is relatively smaller than the demersal fishery. Inshore and offshore gillnetting trolling and even bottom trawling, contribute to the production of pelagic fish species. About 30 pelagic species are of commercial significance, but only sardines, king-mackerels and sharks were identified as the main varieties. The sardines are the most abundant pelagic variety but are practically unexploited and large quantities of sharks entering the gillnet fishery are discarded. Though the productions of large and samll pelagic varieties are estimated to be 570 M. tons and 70 M. tons per annum, their maximum potential yields are considered to be in the regions of 2,200 M.tons and 20,000 M.tons, respectively. Around Qatar, the extent of the area with high density of any one pelagic species is less than 50% of the total area of the Qatar waters. The north-east and north coasts are relatively richer areas than the west and south-east coasts. The size ranges of various species entering the fishery and their distribution behaviour, are discussed. High seasonality in the availability of these fish to the fishery is evident, and it appears to be influenced by the seasonal changes in the environmental conditions. تعتبر مصايد الأسماك السباحة حول قطر أقل من مثيلاتها من الأسماك القاعية . فوسائل الصيد العاملة في المياه الشاطئية والبعيدة عن الشاطىء وبالتحديد بالشباك الخيشومية وبجر الخيط والميد ار (السنار) وكذلك شباك الجر القاعية تساهم جميعا في صيد الأنواع العائمة من الأسماك . فهناك حوالي 30 نوع من الأسماك السباحة ذات مدلول تجاري إلا أن العوم (السردين ) ومجموعة أسماك الكنعد واليريور (القروش ) تتميز بأنها المكون الأساسي لها . فالعوم من أكثر الأسماك السباحة توافرا إلا أنه لا يستغل اقتصاديا كما أن كميات كبيرة من القروش تتخبط في الشباك الخيشومية ويتم التخلص منها بألقائها ثانية في البحر . والانتاجية السنوية للأسماك السباحة الكبيرة تبلغ 570طنا بينما هي 70 طنا فقط من النوعيات الصغيرة الا أن الانتاج المتاح الذي يمكن الحصول عليه فهو 2200 طنا من النوعيات الكبيرة بالاضافة إلى . . .,. 2 طنا من النوعيات الصغيرة . والمساحة المتاحة لتركيز كبير من أي نوع من هذه الأسماك حول قطر يقل عن 50% من مساحة المياه الكلية لها . فالشاطىء الشمالي الشرقي والشاطىء الشمالي يعتبران أغنى نسبيا من الشاطىء الغربي والشاطىء الجنوبي الشرقي . وقد تم في هذا البحث تتبع التغير في الأنواع المختلفة منها ، والتي تدخل المصيد وكذلك دراسة انتشارها وسلوكها . حيث أتضحت موسمية تواجد هذه الأنواع تبعا للتغيرات البيئية المختلفة . وبمثل ما يتخلص منه حاليا من هذه الأسماك بحوالي 19% من كمية المصاد بالمصايد الأهلية بالاضافة إلى5, 7% من المصيد بمراكب الصيد بالجر .

Country
Qatar
Related Organizations
Keywords

علوم البحار, Marine Science

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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green