نتایج جستجو برای: persian sturgeon acipenser persicus

تعداد نتایج: 15316  

Ahmad Ghasemi Fereidoon Chakmehdouz Mahtab Yarmohammadi Mohammad Hassanzadeh Mohammad Pourkazemi1

The late sexual maturity in sturgeon and the absence of morphological differences between males and females makes sex discrimination difficult. Identification of sex at an early life stage is of high interest in caviar production because it allows efficient selection of females. In this study, the genome of 10 mature male and 10 mature female specimens of Persian sturgeon (Acipenser persicus...

Journal: :iranian journal of ichthyology 0
mohammad reza noei institute of zoology, the azerbaijan national academy of sciences, baku, azerbaijan. shaig ibrahimov institute of zoology, the azerbaijan national academy of sciences, baku, azerbaijan. masoud sattari department of fisheries, faculty of natural resources, guilan university, somaeh sara campus, guilan, iran.

although the persian sturgeon, acipenser persicus , is a commercially valuable sturgeon species of the caspian sea, but there are only few reports about its parasite fauna in the southern part of the caspian sea. in this study, a total of 209 individuals of persian sturgeon were collected from two regions in the southwestern of caspian sea (guilan province, iran) from march 2009 to may 2011. af...

Journal: :شیلات 0
محمد لشکربلوکی گروه شیلات دانشکده علوم کشاورزی و منابع طبیعی مجتمع آموزش عالی گنبد کاووس، ایران حجت جعفریان استادیار دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران، ایران عبدالصمد کرامت استادیار دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران، ایران

this study was carried out to evaluate the effect of commercial live bakery’s’ yeast( saccharomyces cerevisiae ), (marketed as amax), on growth and survival of persian sturgeon( acipenser persicus) larvae (74.9 ± 9.7mg) during 30 days. sturgeon larvae were fed on daphnia magna enriched at three suspensions of yeast, amax, (0, 50, 100, and 150 mg yeast per litter). the feeding level was 30 perce...

2010
Rajab Mohammad Nazari Mohammad Reza Ghomi Laura Aquiloni

This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively...

M. Ghanbari, M. Jami M. Rezaei R. M. Nazari

Lactic acid bacteria are characterized as gram-positive, usually non-motile, non-sporulating bacteria that produce lactic acid as a major or sole product of their fermentative metabolism. In this study, the presence of lactobacilli were investigated in the intestines of beluga ( Huso huso) and Persian sturgeon ( Acipenser persicus ), inhabiting Caspian sea. The obtained data showed that various...

ژورنال: علمی شیلات ایران 2012
توکلی, محمود, جوشیده, هاشم, خوشقلب, بهروز, فدایی, بهروز, مرادی, یزدان, پرافکنده حقیقی, فرخ,

This study was carried out in Turkmen fishing station to examine suitable mesh size of gill nets for Persian sturgeon, Acipenser persicus, to decrease possibility of catching immature specimens and increase catch likelihood for larger fish. The Holt model was used to determine suitable length for catch and selection of mature Persian sturgeon females. Following preliminary studies some 920 expe...

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