نتایج جستجو برای: great sturgeon huso huso
تعداد نتایج: 226936 فیلتر نتایج به سال:
از آنجا که بیشتر تلاش ها برای تعیین جنسیت ماهیان خاویاری به ماهی های با سن بیشتر از سه سال معطوف بوده است، چنین به نظر می رسد که تعیین جنسیت این ماهی ها در سنین کمتر از سه سالگی به سادگی میسر نمی باشد. در این تحقیق به منظور بررسی امکان تعیین جنسیت فیل ماهی کوچکتر از سه سال، گناد 12 قطعه فیل ماهی یک ساله و 12 قطعه فیل ماهی دوساله (در مجموع 24 قطعه) پرورش یافته در استان قم مورد مطالعه قرار گرفتن...
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Background and purpose: High concentrations of heavy metals have always been a major cause of contamination in aquatic ecosystem. Sturgeons are important sources of food and income throughout the world. In this study, concentrations of Cadmium, Vanadium, Nickel and Zinc (Cd, Ni, V and Zn) were examined in edible and inedible tissues of stellate sturgeon (Acipenser stellatus) and beluga (Huso hu...
Background: The Endothelial PAS domain-containing protein 1 (EPSA1) is the key transcriptional regulator of hypoxic response and Vascular Permeability Factor (VPF) is an important growth factor for vascular development and angiogenesis. OBJECTIVES: In the present study, the levels of the EPSA1 coding gene and VPF transcripts were evaluated during Larval development of Beluga, Huso huso. METHODS...
the mucus layer on the skin of fish contain a several of antimicrobial compounds that provide a first line of defense against fish pathogens. this study was conducted to evaluate the effects of different levels of prebiotic grobiotic®-a on antimicrobial activity and some immune parameters of mucus of cultured juvenile beluga (huso huso). for this purpose, four groups of beluga sturgeon with mea...
in present study, it was determinated lc50 96-h and toxicity degree of diazinon in huso huso, then were evaluated effects of sub-lethal concentrations on tow general enzymatic indices including alanine and aspartate aminotransferase of plasma and one specific enzymatic index including tissue ache enzyme. the median lethal concentration, lowest observed effect concentration and maximum allowable...
caviar is one of the valuable and most popular fish products all over the world that are obtained from sturgeons. nowadays, the wild resources of these fishes are diminished, therefore, to meet the demand for the product, farming sturgeons has been considered. the chemical composition and the amino acids profiles of the wild and farmed roe obtained from beluga (huso huso) were compared and the ...
The aim of this study was to identify and compare the mineral micronutrients compositions, color and genetic structure differences between the wild and farmed Caspian Sea Beluga (Huso huso) sturgeon caviar, which plays an important role to caviar market transparency to prove farmed caviar quality and nutritional values and wild and farmed Beluga caviar genetic identification. Mineral micronutri...
Proximate, fatty acid compositions and nutritional quality indices of lipids between the caviar of wild and farmed Caspian Sea Beluga (Huso huso) sturgeon and their cardiovascular effects have been compared. Protein, lipid, moisture and ash were analyzed by using standard methods of proximate composition analysis and fatty acids profile determined by gas chromatography method. The fatty acid co...
Background: Polycyclic aromatic hydrocarbons (PAHs) are a predominant group of contaminants that have been shown to accumulate and persist in marine organisms. We evaluated the dose-dependent induction of the cytochrome P4501A (CYP1A) system in the Sturgeon fish, Huso huso after after exposure to PAHs, beta-naphthoflavone (BNF) and 3- methylcholantheren. Methods: The fish were treated by i.p...
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