نتایج جستجو برای: acipenser stellatus
تعداد نتایج: 1678 فیلتر نتایج به سال:
In order to have a sustainable management on Persian sturgeon as a highly commercial species in the South Caspian Sea, we need to identify its population structure and the level as well as its conservation status in their natural habitat. To develop a conservation program for this all Caspian Sea' sturgeon species it requires knowledge of its genetic diversity using reliable molecular...
این پژوهش با هدف تعیین و مقایسه میزان فلزات سنگین کادمیوم، روی و نیکل در عضله و کبد فیل‌ماهی (Huso huso) و ماهی ازون‌برون (Acipenser stellatus) پرورشی در فصل بهار در استان خوزستان انجام شد. 60 نمونه فیل‌ماهی و ماهی ازون‌برون به‌صورت کاملاً تصادفی از 5 استخر پرورشی مزرعه پرورش ماهیان خاویاری حنطوش‌زاده تهیه شد. سنجش فلزات سنگین به روش جذب اتمی و با دستگاه Perkin Elmer 4100 صورت ...
The possible repercussions of osmoregulatory processes on some indicators of classical and oxidative stress were examined during gradual acclimation of sturgeons (Acipenser naccarii) to full seawater (35% salinity) and after a period of 20 approximately days at this salinity. Erythrocyte constants and levels of cortisol, protein and glucose in the plasma were determined. In addition, plasma osm...
The shortnose sturgeon, Acipenser brevirostrum, oft considered a phylogenetic relic, is listed as an "endangered species threatened with extinction" in the US and "Vulnerable" on the IUCN Red List. Effective conservation of A. brevirostrum depends on understanding its diversity and evolutionary processes, yet challenges associated with the polyploid nature of its nuclear genome have heretofore ...
Veronaea botryosa is a melanized mold and cause of systemic fungal infections in cultured sturgeon (Acipenser spp.). Mortality in adult female sturgeon caused by this emergent pathogen results in significant economic losses for the caviar industry. Little is known regarding environmental conditions conducive to V. botryosa infection. This study evaluated the effect of temperature on V. botryosa...
This study assessed the effect of tissue storage duration and accuracy of the metabolic inhibitor tissue homogenate (MITH) method on intracellular pH (pHi) values of tissues of white sturgeon Acipenser transmontanus during hypercarbia. No effect of storage in liquid nitrogen of up to 30 days was observed and MITH appears appropriate for measurement of pH in fish exposed to up to 10% CO2 (10000 ...
Asteltoxins belong to a group of polyene pyrone mycotoxins that are known be potent inhibitors mitochondrial ATP synthesis and hydrolysis. Asteltoxin A was first isolated from the toxic maize cultures Aspergillus stellatus. Several attempts have been made synthesize asteltoxin A, starting with bis(tetrahydrofuran) moiety has demonstrated previously in biosynthetic studies. This review highlight...
زمینه: کندروئیتین سولفات‌ها از مهم‌ترین گلیکوز آمینوگلیکان‌های موجود در ماهیان خاویاری می‌باشند که در غضروف این ماهیان حضور دارند. این ترکیبات علاوه بر اهمیت در صنایع غذایی، آرایشی و بهداشتی، از اهمیت بالینی در درمان آرتروز و ترمیم زخم نیز برخوردار هستند. مواد و روش‌ها: در تحقیق حاضر استخراج کندروتین سولفات (CS) از غضروف ماهی ازون برون (۲۵/۰ گرم پودر غضروف ماهی در ۱۰ میلی‌لیتر بافر PBS1X) توسط...
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