fa بررسی برخی پارامترهای زیستی کپور معمولی (Cyprinus carpio Linnaeus, 1758) در سواحل جنوب شرقی دریای خزر تخصصي Special پژوهشي Research <span style="font-size:12pt"><span style="line-height:150%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span b="" lang="FA" nazanin="" style="font-family:">ماهی کپور معمولی (</span><i><span dir="LTR" style="font-size:11.0pt"><span style="line-height:150%">Cyprinus</span></span></i><i> </i><i><span dir="LTR" style="font-size:11.0pt"><span style="line-height:150%">carpi</span></span></i><span dir="LTR" style="font-size:11.0pt"><span style="line-height:150%">o</span></span><span b="" lang="FA" nazanin="" style="font-family:">) از گونه&shy;های مهم اقتصادی دریای خزر است</span><span b="" lang="AR-SA" nazanin="" style="font-family:">. در این تحقیق، جهت بررسی برخی پارامترهای زیستی، </span><span b="" lang="FA" nazanin="" style="font-family:">تعداد 679 نمونه از تورهای پره ماهیان استخوانی مستقر در ساحل جنوب شرقی دریای خزر در محدوده استان گلستان طی دوره 1393-1394 جمع&shy;آوری و زیست&shy;سنجی گردید. نمونه&shy;ها در دامنه طولی 75-15 سانتی&shy;متر و دامنه سنی 10-1 سال قرار داشتند. الگوی رشد در هر دو جنس نر و ماده، آلومتریک منفی بود. معادله رشد فان&shy;برتالانفی برای ماهی کپور </span><m:omath><m:ssub><m:ssubpr><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></m:ssubpr><m:e><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r>L</m:r></span></i></m:e><m:sub><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r>t</m:r><m:r> </m:r></span></i></m:sub></m:ssub><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r>=78.23 (1-</m:r></span></i><m:ssup><m:ssuppr><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></m:ssuppr><m:e><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r><m:rpr><m:scr m:val="script"><m:sty m:val="i"></m:sty></m:scr></m:rpr>e</m:r></span></i></m:e><m:sup><m:d><m:dpr><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></m:dpr><m:e><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r><m:rpr><m:scr m:val="script"><m:sty m:val="i"></m:sty></m:scr></m:rpr>-</m:r><m:r>0.2</m:r></span></i><m:d><m:dpr><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></m:dpr><m:e><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r>t</m:r><m:r>+0.64</m:r></span></i></m:e></m:d></m:e></m:d></m:sup></m:ssup><i><span cambria="" dir="LTR" math="" style="font-family:"><m:r>)</m:r></span></i></m:omath><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times=""><span style="position:relative"><span style="top:3.0pt"><img alt="" id="_x0000_i1025" src="data:image/png;base64,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" style="width:157.5pt; height:16.5pt" > </span></span></span></span><span b="" nazanin="" style="font-family:">&nbsp;محاسبه گردید. مقادیر نرخ مرگ ومیر کل، طبیعی، صیادی و نسبت بهره&shy;برداری به ترتیب 872/0، 364/0 و 49/0 بر سال و 58/0 محاسبه شد. بر اساس مدل تامپسون و بل، میزان بیوماس آن 16641 کیلوگرم و حداکثر محصول پایدار 2151 کیلوگرم محاسبه گردید. نتایج بیانگر وضعیت نامناسب ذخایر ماهی کپور معمولی در سواحل جنوب شرقی دریای خزر است.</span></span></span></span></span></span><br> &nbsp; <span style="font-size:12pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span style="font-size:11.0pt"><span style="line-height:150%">Common carp, <i>Cyprinus carpio</i> is one of the most important and commericial species in Caspian Sea. In this study, for surveying some biological parameters, 679 specimens were collected from beach seine cooperative firms in southeast of Caspian Sea (Golestan Province) since October 2014 to March 2015. The individuals range from 15 to <st1:metricconverter productid="75 cm" w:st="on">75 cm</st1:metricconverter> fork length and 1to 10 age. Common carp has negative allometric growth model. The Von-Bertalanfi growth equation was assessed </span></span><m:omath><m:ssub><m:ssubpr><span style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></span></m:ssubpr><m:e><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r>L</m:r></span></span></span></i></m:e><m:sub><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r>t</m:r><m:r> </m:r></span></span></span></i></m:sub></m:ssub><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r>=78.23 ( 1-</m:r></span></span></span></i><m:ssup><m:ssuppr><span style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></span></m:ssuppr><m:e><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r><m:rpr><m:scr m:val="script"><m:sty m:val="i"></m:sty></m:scr></m:rpr>e</m:r></span></span></span></i></m:e><m:sup><m:d><m:dpr><span style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></span></m:dpr><m:e><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r><m:rpr><m:scr m:val="script"><m:sty m:val="i"></m:sty></m:scr></m:rpr>-</m:r><m:r>0.2</m:r></span></span></span></i><m:d><m:dpr><span style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="font-style:italic"><m:ctrlpr></m:ctrlpr></span></span></span></m:dpr><m:e><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r>t</m:r><m:r>+0.64</m:r></span></span></span></i></m:e></m:d></m:e></m:d></m:sup></m:ssup><i><span style="font-size:11.0pt"><span style="line-height:150%"><span cambria="" math="" style="font-family:"><m:r>)</m:r></span></span></span></i></m:omath><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times=""><span style="position:relative"><span style="top:3.0pt"><img alt="" id="_x0000_i1025" src="data:image/png;base64,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" style="width:147.75pt; height:15pt" > </span></span></span></span><span style="font-size:11.0pt"><span style="line-height:150%">. Total mortality, natural mortality, fishing mortality coefficients and exploitation ratio were estimated 0.872, 0.364, 0.49 year^-1 and 0.58, respectively.</span></span> <span style="font-size:11.0pt"><span style="line-height:150%">According to Thampson and Bell model</span></span><span style="font-size:11.0pt"><span style="line-height:150%">, biomass and </span></span><span style="font-size:11.0pt"><span style="line-height:150%">maximum sustainable yield were estimate 16641 Kg and 2151 Kg. Results determine common carp stock has unsuitable situation in southeast of Caspian Sea</span></span><span dir="RTL" lang="FA" style="font-size:11.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:">.</span></span></span></span></span></span></span><br> &nbsp; ماهی کپور, دریای خزر, ارزیابی ذخایر, سواحل استان گلستان Cyprinus carpio, Caspian Sea, Stock assessment, Golestan Province. 101 110 http://jair.gonbad.ac.ir/browse.php?a_code=A-10-45-5&slc_lang=fa&sid=1 roshana aliakbarian روشنا علی اکبریان rasulrbani@gmail.com 10031947532846009828 10031947532846009828 Yes rasul ghorbani رسول قربانی rasulghorbani@gmail.com 10031947532846009829 10031947532846009829 No hasan fazli حسن فضلی rasulghorba@gmail.com 10031947532846009830 10031947532846009830 No rasul salman mahini رسول سلمان ماهینی rasulghrani@gmail.com 10031947532846009831 10031947532846009831 No saeid yelghi سعید یلقی rasuhorbani@gmail.com 10031947532846009832 10031947532846009832 No rahmat nadafi رحمت ندافی raslghrbani@gmail.com 10031947532846009833 10031947532846009833 No