بررسی ساختار جمعیت کیلکای چشم درشت Clupeonella grimmi Kessler, 1877 در سواحل استان مازندران

بررسی ساختار جمعیت کیلکای چشم درشت clupeonella grimmi kessler, 1877 در سواحل استان مازندران

Structure and arrangement of photoreceptors in the retina of big eye kilka, Clupeonella grimmi (Kessler 1877)

The big eye kilka, Clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the Caspian Sea. Its eye and retina were processed for histological and SEM studies. Paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. The unstained sections were manipulated for SEM image observations. Tangential retinal sect...

بافت شناسی گناد و شاخص های تولید مثلی کیلکای چشم درشت ‏‎(clupeonella grimmi)‎‏ در جنوب دریای مازندران

نتایج این تحقیق مبین آنست که در جامعه آماری موردمطالعه کیلکای چشم درشت دارای نسبت جنسی 7: 1 (نر به ماده ) بوده ، زمان اوج اسپرم ریزی نر و تخمریزی ماده در اوایل بهمن ماه می باشد . میانگین وزن 73/8گرم ، طول چنگالی6/ ‏‎ 110 ‏‎mm‎‏ سن 3./ بعلاوه و منهای 6/3 ، مرحله بلوغ جنسی ماده ها 3./ بعلاوه و منهای 67/3 ، وزن گناد1 ./.بعلاوه ومنهای 5/. گرم ،شاخص بلوغ 1/ بعلاوه و منهای 39/5 ، قطر تخمک / 3 .بعلاوه...

بررسی سن، رشد و مرگ و میر کیلکای معمولی در سواحل (Clupeonella cultriventris caspia) استان مازندران

structure and arrangement of photoreceptors in the retina of big eye kilka, clupeonella grimmi (kessler 1877)

the big eye kilka, clupeonella grimmi, is a marine fish living in depth of 20 to 200 meter of the caspian sea. its eye and retina were processed for histological and sem studies. paraffin embedded retina was cut radially and tangentially in 5 ?m thickness and stained with hematoxylin and eosin method. the unstained sections were manipulated for sem image observations. tangential retinal section...

Age and growth of bigeye kilka (Clupeonella grimmi Kessler, 1877) in Iranian waters of the Caspian Sea

Age and growth of Bigeye Kilka, Clupeonella grimmi, were studied in Iranian waters of the Caspian Sea from early May 2006 to April 2007. The sagitta otoliths were removed for each 5 mm length interval up to a total number of 262 fish. Fork length and weight ranged from 92.5 to 142.5 mm and 4.2 g to 23.4 g, respectively. The largest length-groups was observed from December to February and the lo...