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International Journal of Aquatic Biology، جلد ۲، شماره ۴، صفحات ۱۹۳-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
The relationship between morphological and sexual indices in suitable brood Russian sturgeon Acipenser gueldenstaedtii (Brandt and Ratzeburg, 1833) |
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| چکیده انگلیسی مقاله |
Owing to reduction of sturgeon stocks in various water bodies, artificial propagation has become significantly important for stock restoration and appropriate broodstock selection is vital in this process. Selection of suitable broodstocks may influence the quality and quantity of obtained eggs and larva. The present study aimed to examine correlation between some morphometric and reproductive parameters to find suitable brood fish for artificial reproduction in Russian sturgeon, Acipenser gueldenstaedtii . Forty fish free of any external disease symptom and abnormality were selected for the study. Following biometric measurements including weight, total length, abdominal girth, PV (distance between pectoral and pelvic fins), LX (distance between anal and caudal fins), polarization index (PI), gonadosomatic index, absolute fecundity, and fertilization rate, correlations between these morphometric and biological characteristics with emphasis on breeding were calculated. There was higher correlation between weight-absolute fecundity and length-PV in fish responded to artificial breeding, while correlation between age-PV, length-PV and weight-abdominal girth were higher in those fish not responded to artificial breeding. The results suggests that it is quite possible to select suitable Russian sturgeon spawners for artificial propagation based on combination of body weight, LX, PV, age, abdominal girth and total length, however the most useful criteria for the selection seems to be precise measurement of the polarization index. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
بهرام فلاحتکار | bahram falahatkar
fisheries department, faculty of natural resources, university of guilan, iran.
سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)
جاوید ایمانپور | javid imanpour
fisheries department, faculty of natural resources, university of guilan, sowmeh sara, p.o. box 1144, guilan, iran.
سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)
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| نشانی اینترنتی |
http://npajournals.com/ijab/index.php/ijab/article/view/290 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Articles |
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