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Reproduction of round sardinella, Sardinella aurita (Valenciennes, 1847) in the Syrian coast.

تكاثر سمك السردين المبروم Valenciennes, 1847) Sardinella aurita) في الساحل السوري.

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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A total of 410 Sardinella aurita Fish , were collected from Syrian coast during the period from April 2014 to March 2015.Total length and weight ranged between 81 – 270 mm, 6.94 –137.29g respectively. The aim of present study was to illustrated some aspects of reproduction biology for Sardinella aurita. . Gonads Somatic Index (G.S.I.) for female and male recorded highest value in early June 4.22 and 5.80 respectively. Male and females round sardinella reach first sexual maturity at total length (17.97 cm and 18.67 cm respectively). Mean absolute fecundity (FA) increased with body length ( ) and weight ( ), with an average of 20714.79 ±4876.21 oocytes produced per spawning female. Relative fecundity (FR) ranged between 242 and 285 oocytes/g of body weight (average: 266.17 ±21.49 oocytes/g). The study on the frequency distribution of eggs diameters revealed the presence of one beak of sardinella aurita. The egg diameters of sardinella aurita ranged between 0.2mm -0.7mm with an average 0.45±0.18 mm.


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Research summary
تناولت الدراسة تكاثر سمك السردين المبروم (Sardinella aurita) في الساحل السوري، حيث جمعت 410 سمكة خلال الفترة من نيسان 2014 إلى آذار 2015. تراوحت أطوال الأسماك بين 8.1 و27 سم وأوزانها بين 6.94 و137.29 غرام. هدفت الدراسة إلى توضيح بعض جوانب بيولوجيا التكاثر لهذا النوع. سجل مؤشر المناسل (GSI) أعلى قيمة له في بداية حزيران، حيث بلغت 4.22 للإناث و5.80 للذكور. وصل الذكور والإناث إلى النضج الجنسي الأول عند أطوال 17.97 سم و18.67 سم على التوالي. ارتفعت الخصوبة المطلقة مع زيادة طول ووزن الجسم، حيث تراوحت الخصوبة النسبية بين 242 و285 بيضة/غرام من وزن الجسم. أظهرت نتائج توزيع أقطار البيوض وجود قمة واحدة في منحنى التوزيع، مما يدل على وجود فترة تكاثر واحدة خلال العام. أوصت الدراسة بحظر صيد الأسماك التي تقل أطوالها عن الطول عند أول نضج جنسي، والتعاون مع الجهات المعنية لتنفيذ هذه الإجراءات.
Critical review
تعتبر هذه الدراسة مهمة لأنها تسلط الضوء على جوانب بيولوجية هامة لسمك السردين المبروم في الساحل السوري، مما يسهم في إدارة أفضل لمصايد الأسماك. ومع ذلك، يمكن أن تكون هناك بعض النقاط التي تحتاج إلى تحسين. على سبيل المثال، قد تكون العينة المجمعة غير كافية لتعميم النتائج على كامل الساحل السوري. كما أن الدراسة لم تتناول تأثير العوامل البيئية الأخرى مثل التلوث والتغيرات المناخية على تكاثر هذا النوع. بالإضافة إلى ذلك، يمكن أن تكون هناك حاجة لمزيد من الدراسات المقارنة مع مناطق أخرى لضمان دقة النتائج.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو توضيح بعض جوانب بيولوجيا التكاثر لسمك السردين المبروم في الساحل السوري.

  2. ما هي أعلى قيمة لمؤشر المناسل (GSI) للذكور والإناث؟

    أعلى قيمة لمؤشر المناسل (GSI) كانت 4.22 للإناث و5.80 للذكور.

  3. ما هو الطول عند أول نضج جنسي للذكور والإناث؟

    الطول عند أول نضج جنسي للذكور هو 17.97 سم وللإناث هو 18.67 سم.

  4. ما هي التوصيات الرئيسية التي خلصت إليها الدراسة؟

    أوصت الدراسة بحظر صيد الأسماك التي تقل أطوالها عن الطول عند أول نضج جنسي، والتعاون مع الجهات المعنية لتنفيذ هذه الإجراءات.


References used
FREON, P. ; KHATTABI, M. El. ; MENDOZA, J and GUZMAN, R. Unexpected reproductive strategy of Sardinella aurita off the coast of Venezuela. Mar. Biol, 128, 1997, 363-372
FROESE, R and PAULY,D (eds.). 2003. FishBase, World Wide Web electronic publication. <www.fishbase.org>, 10 September, 2003
FAO. 2000. THE STATE OF WORLD FISHERIES AND AQUACULTURE Organisation of the United Nations. Rome, Italy
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