Results 171 to 180 of about 1,088,133 (206)

Features of osmotic and ionic regulations in russian sturgeon (Acipenser güldenstädti brandt)

Comparative Biochemistry and Physiology Part A: Physiology, 1985
The osmolality of blood serum of one group of Russian sturgeon fished out in Southern Caspian Sea was the same as their habitat, the other group of sturgeons had a serum osmolality several per cent lower than that of sea-water in this part of the Caspian Sea. Ion concentrations in blood serum in sturgens were similar in fresh water and the Caspian Sea.
Y V, Natochin, V I, Lukianenko, V I, Kirsanov, E A, Lavrova, G F, Metallov, E I, Shakhmatova   +5 more
openaire   +2 more sources

Understanding the spleen response of Russian sturgeon (Acipenser gueldenstaedtii) dealing with chronic heat stress and Aeromonas hydrophila challenge.

Comparative Biochemistry and Physiology - Part D:Genomics and Proteomics
Sturgeon aquaculture has grown in recent years, driven by increasing global demand for its highly valued products. Russian sturgeon (Acipenser gueldenstaedtii), recognised as one of the most valuable species for caviar production, is farmed in several ...
A. Costábile, G. Paredes, M. Aversa-Marnai, Carmen Lorenzo, Diana Pérez Etcheverry, M. Castellano, Ignacio Quartiani, Daniel Conijeski, A. Perretta, A. Villarino, A. M. Ferreira, V. Silva-Álvarez   +11 more
semanticscholar   +1 more source

[Meiotic gynogenesis in the stellate, Russian sturgeon and sterlet].

Ontogenez, 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, Rekubratskiĭ, A S, Grunina, V A, Barmintsev, T S, Golovanova, O S, Chudinov, A B, Abramova, N S, Panchenko, S A, Kupchenko   +7 more
openaire   +1 more source

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

A Comment on the Siberian, Acipenser baerii, and Russian, Acipenser gueldenstaedtii, Sturgeons

Environmental Biology of Fishes, 2004
Contrary to the opinion of Kynard et al. (2002), the Siberian sturgeon, Acipenser baerii, does not belong to the Ponto-Caspian species. It inhabits Siberian rivers and Lake Baikal. Acipenser baerii is a typical potamodromous species and the comparison of the behavior of its embryos and larvae with those of the anadromous Russian sturgeon, Acipenser ...
Vadim J. Birstein, Georgii Ruban
openaire   +1 more source

In vitro steroidogenesis by gonads of the Russian sturgeon, Acipenser gueldenstaedti Brandt

Fish Physiology and Biochemistry, 1997
Ovaries and testes from the Russian sturgeon at different stages of sexual maturity were incubated with ;sup3;H-androstenedione or 3H-pregnenolone. The major metabolites of androstenedione in both sexes were testosterone and 5α- and 5s-androstanediols, but no evidence was found for the gonadal production of 11-oxygenated androgens.
O. Bukovskaya, J.G.D. Lambert, D.E. Kime
openaire   +1 more source

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

Sexual development in Russian sturgeon (Acipenser gueldenstaedtii) grown in aquaculture

2008
The Russian sturgeon (Acipenser gueldenstaedtii) has been introduced into aquaculture in recent years, following the decline of natural populations and the resultant increases in the price of caviar. In nature, males and females of this species mature sexually after 8 to 13 and 10 to 16 years, respectively. Fertilized Russian sturgeon eggs were bred up
Hurvitz, Avshalom, Jackson, Karen, Yom-Din, Svetlana, Degani, Gad, Levavi-Sivan, Berta   +4 more
openaire   +1 more source

[Dispermic androgenesis in sturgeons with the help of cryopreserved sperm: production of androgenetic hybrids between Siberian and Russian sturgeons].

Ontogenez, 2011
Dispermic androgenesis was used to produce, for the first time, an androgenetic progeny of the Siberian sturgeon (Acipenser baerii) and the androgenetic nuclear cytoplasmic hybrids (Siberian sturgeon, A. baerii x Russian sturgeon, A. gueldenstaedtii) using cryopreserved sperm.
A S, Grunina, A V, Rekubratskiĭ, L I, Tsvetkova, A E, Barmintseva, E D, Vasil'eva, K V, Kovalev, O G, Poluéktova   +6 more
openaire   +1 more source

Whole-genome resequencing reveals selection signatures for caviar yield in Russian sturgeon (Acipenser gueldenstaedtii)

Aquaculture, 2023
Hailiang Song, B. Zhu, Tian Dong, Wen Wang, Mou Hu, Xiaoyu Yan, Shijian Xu, Hongxia Hu   +7 more
semanticscholar   +1 more source