SOME BEHAVIOUR PATTERNS AND DISTRIBUTION OF CASPIAN ORDINARY SPRAT SPECIES - CLUPEONELLA DELICATULA CASPIA SVETOVIDOV
نویسندگان
چکیده
منابع مشابه
Effect of a light change in conical lift nets on the length and weight composition of Common sprat (Clupeonella caspia, Svetovidov, 1941) from Amirabad fishing port
The research study the effect of changing light color on the length and weight composition of common sprat (C. caspia) catch in conical lift net with a mesh size of 8 mm (knot to knot). For this purpose, in January 2018 the sprat fish caught by three fishing vessels during 30 times of fishing operations at 50-40 m depth in Amirabad fishing port. The results showed that from total number of 2874...
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the present research aimed to study the growth and reproductive parameters of common kilka clupeonella caspia in southern caspian sea in 2010. after measuring the length and weight of 3774 samples, they were dissected, sex determined and female gonads were weighed. sexual maturity classification was carried out based on six stages. age was determined using sagitta otoliths. length-weight relati...
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This paper examines the changes in the population biology and biomass of common kilka (Clupeonella cultriventris caspia) in the Iranian waters of the Caspian Sea from 1995-2004. For most years during this 10-year period, we estimated the age structure of the catch, length-weight relationship, von Bertalanffy growth parameters, condition factor, sex ratios, maturity stages determined from ovaria...
متن کاملPoulations dynamics and stock assessment of common kilka (Clupeonella cultriventris caspia ) in Iranian waters of the Caspian Sea
This paper examines the changes in the population biology and biomass of common kilka (Clupeonella cultriventris caspia) in the Iranian waters of the Caspian Sea from 1995-2004. For most years during this 10-year period, we estimated the age structure of the catch, length-weight relationship, von Bertalanffy growth parameters, condition factor, sex ratios, maturity stages determined from ovaria...
متن کاملارزیابی ذخایر و تعیین میزان قابل برداشت گونه کیلکای معمولیcultriventris caspia (Svetovidov, 1941) Clupeonella در حوضه جنوبی دریای خزر
کیلکا از ذخایر با ارزش اقتصادی دریای خزر محسوب می شود که نقش مهمی را در زنجیره غذایی آن ایفا می کند. پژوهش حاضر طی سال های 86-1385، باهدف تعیین میزان ذخیره کیلکای معمولی و تنظیم الگوی برداشت پایدار از آن، در جنوب دریای خزر به مرحله اجرا درآمد. نمونه برداری در سواحل جنوبی دریای خزر از مهر سال 1385 تا شهریور 1386 در دو بندر انزلی و بابلسر صورت گرفت. در طول دوره بررسی 1533 نمونه بیومتری شدند و 913...
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ژورنال
عنوان ژورنال: Vestnik of Astrakhan State Technical University. Series: Fishing industry
سال: 2018
ISSN: 2073-5529,2309-978X
DOI: 10.24143/2073-5529-2018-3-27-38