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Register a new userReproduction 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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خلال المدة من نيسان 2014 و لغاية آذار 2015 جمعت 410 سمكة سردين مبروم من الساحل السوري، تراوحت أطوالها بين 27-8.1 سم و أوزانها الكلية بين 137.29- 6.94 غ لغرض التعرف على بعض الجوانب التكاثرية لسمكة السردين المبروم في الساحل السوري. تصل الذكور و الإناث إلى قمة النضج الجنسي بداية شهر حزيران حيث بلغت دالة المناسل GSI) Gonads Somatic Index) أعلى قيمة لها 4.22 للإناث و 5.80 للذكور. وصلت ذكور و إناث السردين المبروم لأول نضج جنسي بطول (17.9 و 18.6 سم على التوالي). ارتفع متوسط الخصوبة المطلقة مع طول الجسم ( ) و الوزن ( )، بمتوسط إنتاج بويضات 4876.21±20714.79 و تراوحت الخصوبة النسبية بين 242 - 285 بيضة/غرام من وزن السمكة ( المتوسط 266.17±21.49 : بويضة/غ). و قد دلت دراسة التوزع التكراري للبيوض على وجود قمة واحدة في منحني التوزع للنوع sardinella aurita و تراوحت اقطار البيوض بين 0.7-0.2 ملم بمتوسط 0.45±0.18 ملم.
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.
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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individuals) were collected along the Syrian Coast from March 2012 to February 2014.
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o
f gonado somatic index (GSI) showed that the reproduction period was between
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changes which resulted from the change of sexual activity during the reproductive cycle.
Fecundity showed a wide range for a given length, there was a linear relationship between
the absolute fecundity and each of length groups and total weight. Relative fecundity was
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revealed the presence of one peak, and the eggs diameter during the reproduction period
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