Results 161 to 170 of about 1,200 (206)

Intraspecific genetic polymorphism of Russian sturgeon Acipenser gueldenstaedtii

Russian Journal of Genetics, 2009
Three populations (Azov, Caspian, and Black Sea) of Russian sturgeon Acipenser queldenstaedtii were tested for polymorphism at nuclear (RAPD and microsatellites) and mitochondrial (PCR identification of two mito-types) markers. In addition, morphometric analysis of he representatives of Azov population was carried out.
N N, Timoshkina, A E, Barmintseva, A V, Usatov, N S, Miuge   +3 more
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Characteristics of arylsulfatase in Russian sturgeon (Acipenser gueldenstaedti) semen

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2004
Spermatozoa of sturgeons (Acipenseriformes), unlike teleosts, possess an acrosome. This paper provides data concerning biochemical characteristics of arylsulfatase (AS), an acrosomal enzyme, found in Russian sturgeon spermatozoa and seminal plasma.
Beata, Sarosiek, Andrzej, Ciereszko, Ryszard, Kolman, Jan, Glogowski   +3 more
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The complete mitochondrial genome of Russian sturgeon ( Acipenser gueldenstaedti )

Mitochondrial DNA Part A, 2014
Russian sturgeon (Acipenser gueldenstaedti) belongs to the Acipenseriformes Acipenseridae. In this study, we sequenced and characterized the complete mitochondrial genome of A. gueldenstaedti from National Sturgeon Hatchery, Chinese Academy of Fishery Sciences.
Chuanju, Dong, Baohua, Chen, Jian, Xu, Shahid, Mahboob, K, Al-Ghanim, Peng, Xu, Xiaowen, Sun   +6 more
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Dietary copper requirement of juvenile Russian sturgeon Acipenser gueldenstaedtii

Aquaculture, 2016
Abstract To quantify the dietary copper (Cu) requirement of Russian sturgeon Acipenser gueldenstaedtii, copper sulfate (CuSO4·5H2O) was added into the basal semi-purified diet at seven levels 0, 1, 2, 4, 6, 8 and 16 mg Cu kg− 1 diet yielding the actual dietary values of 0.3, 1.5, 2.4, 4.4, 6.2, 8.3 and 16.1 mg Cu kg− 1 diet, respectively.
Hewei Wang, Erchao Li, Haoyong Zhu, Zhenyu Du, Jianguang Qin, Liqiao Chen   +5 more
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Hepatotoxic effect of dietary phytoestrogens on juvenile cultured Russian sturgeon (Acipenser gueldenstaedtii)

Aquatic Toxicology, 2023
In the last two decades, much controversy has grown over the use of soybean products in aquafeeds, especially for carnivorous fish like sturgeons. One point of discussion is the effect of soybean phytoestrogens on fish health. There are many aspects of phytoestrogen utilization in aquafeeds, therefore, the aim of this study is to verify if common ...
Małgorzata Rzepkowska, Dominika Kinga Głowacka, Mirosław Szczepkowski, Magdalena Fajkowska   +3 more
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Isolation and characterization of insulin in Russian sturgeon (Acipenser guldenstaedti)

The Journal of Peptide Research, 1998
Insulin was isolated from the pancreas of Chondrostean fish, the Russian sturgeon, Acipenser guldenstaedti, by acid‐ethanol extraction followed by ion‐exchange and reverse‐phase high‐performance liquid chromatographies. The amino acid sequence determined by automated Edman degradation is as follows: A‐chain (21‐amino‐acid peptide), H‐Gly‐Ile‐Val‐Glu ...
, Rusakov YuI, S, Moriyama, V M, Bondareva, A P, Kolychev, Y, Amemiya, A, Yasuda, H, Kawauchi   +6 more
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Otolith microstructure of the Russian sturgeon, Acipenser gueldenstadti

Journal of the Marine Biological Association of the United Kingdom, 2002
Otolith microstructure of the Russian sturgeon, Acipenser gueldenstadti was examined in adult samples collected in the Caspian Sea. The microstructure of the otolith was the same among specimens. The anterior side of the sagitta grew in two directions elongating both the long and short arms, and the long arm sections exhibited 14–21 distinct ...
Takaomi Arai, Nobuyuki Miyazaki
openaire   +1 more source

Meiotic Gynogenesis in the Stellate and Russian Sturgeons and Sterlet

Russian Journal of Developmental Biology, 2003
Diploid gynogenetic progenies were obtained in the stellate sturgeon Acipenser stellatus, Russian sturgeon, A. gueldenstaedtii, and sterlet A. ruthenus by means of insemination of the eggs with UV-irradiated spermatozoa and suppression of the second meiotic division by heat shock.
A. V. Recoubratsky, A. S. Grunina, V. A. Barmintsev, T. S. Golovanova, O. S. Chudinov, A. B. Abramova, N. S. Panchenko, S. A. Kupchenko   +7 more
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Allozyme Variation of Nonspecific Esterases in Russian Sturgeon Acipenser güldenstädti Brandt

Russian Journal of Genetics, 2002
Electrophoresis in 7% polyacrylamide gel was used to analyze nonspecific esterases from different organs and tissues of Russian sturgeon. The basic enzymatic activity was observed the four zymogram zones. In sixteen cases the patterns of isozyme distribution in these zones allowed to consider them as allele systems (14 polymorphic and 2 monomorphic ...
openaire   +2 more sources

Dispermic androgenesis in sturgeons with the use of cryopreserved sperm: Production of androgenetic siberian sturgeon and androgenetic hybrids between Siberian and Russian sturgeons

Russian Journal of Developmental Biology, 2011
Dispermic androgenesis was used to produce, for the first time, an androgenetic progeny of the Siberian sturgeon (Acipenser baerii) and the androgenetic nucleo-cytoplasmic hybrids (Siberian sturgeon, A. baerii × Russian sturgeon, A. gueldenstaedtii) using cryopreserved sperm. Microsatellite DNA analysis confirmed exclusively paternal inheritance in the
A. S. Grunina, A. V. Rekoubratsky, L. I. Tsvetkova, A. E. Barmintseva, E. D. Vasil’eva, K. V. Kovalev, O. G. Poluektova   +6 more
openaire   +1 more source