نتایج جستجو برای: tenualosa ilisha
تعداد نتایج: 170 فیلتر نتایج به سال:
آبهای ساحلی خوزستان ( بخش غربی و شرقی کانال خورموسی) از دی ماه 1385 تا آذر ماه 1386 جهت بررسی ساختار جمعیتی و روند تغییرات زمانی و پراکنش مکانی ماهیان جوان بررسی شد . نمونه برداری این بررسی توسط تور ترال کفی با قطر چشمه 24 میلی متر به صورت ماهانه انجام شد . در طول دوره بررسی جمعآ 28700 قطعه ماهی مورد بررسی قرار گرفتند . در مجموع 64 گونه متعلق به 40 خانواده شناسایی شدند . thryssa vitriostris ،...
Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create “shifting baseline syndrome,” in which younger generations are les...
Fish processing in Cameroon is mostly carried out by untrained individuals using different methods which often produce fish products of poor quality. This study was aimed at identifying the main technologies used 5 fishing communities Limbe Subdivision Southwest Region Cameroon. A total 120 questionnaires were administered area to identify most popular unit operation and evaluate its effect und...
The present study objectified to evaluate the trophic relationships among 14 fish species (10 natives and 4 non-natives) in Shatt Al-Arab River, considering niche breadth diet overlaps of species. food items stomach each are determined by adopting index relative importance (IRI). dietary analysis revealed a total 12 types major consumed (which represent >10% IRI). Two (Oreochromis aureus Cpt...
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