Results 171 to 180 of about 1,247 (204)
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First evidence of autotriploidization in sterlet (Acipenser ruthenus)
Journal of Applied Genetics, 2013Polyploidization has played an important role in vertebrate evolution. Acipenseridae bring clear examples of polyploidy ancestry and, also, polyploidization seems to be an ongoing process in these fishes. In the present study, the genetic origin of six triploid specimens morphologically determined as Acipenser ruthenus from commercial aquaculture was ...
M, Havelka +3 more
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In vitro sperm maturation in sterlet, Acipenser ruthenus
Reproductive Biology, 2014The aim of the study was to examine sperm maturation in sturgeon and to establish the localization of the maturation. We demonstrated that sperm maturation occurs in sturgeon outside the testes via dilution of sperm by urine. The process involves the participation of high molecular weight (>10kDa) substances and calcium ions.
Borys, Dzyuba +8 more
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Complete mitochondrial genome of sterlet (Acipenser ruthenus)
Mitochondrial DNA, 2013The complete mitochondrial genome of sterlet (Acipenser ruthenus) was determined in this study. The mitogenome is 16,790 bp in length and contains 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes and 2 non-coding regions (the control region and the putative origin of the light strand replication) with a typical vertebrate ...
Chao, Li +5 more
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Meiotic Gynogenesis in the Stellate and Russian Sturgeons and Sterlet
Russian Journal of Developmental Biology, 2003Diploid 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 +7 more
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Impact of cryopreservation on sterlet, Acipenser ruthenus sperm motility and proteome
Animal Reproduction Science, 2018Fish sperm cryopreservation is a well-established technique allowing for artificial insemination on a commercial scale. The extent of proteome alterations in seminal plasma and sperm due to cryopreservation, however, is not known. This study was conducted to evaluate the effect of cryopreservation on motility variables of sterlet Acipenser ruthenus ...
Miaomiao, Xin +8 more
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The antioxidant system of sterlet seminal fluid in testes and Wolffian ducts
Fish Physiology and Biochemistry, 2014Oxidative stress is a possible source of spermatozoa function deterioration. Seminal fluid (SF) protects spermatozoa against reactive oxygen species (ROS) attack during development in testes and transit through the reproductive tract. Spermatozoa curvilinear velocity and percent of motile cells as well as changes in thiobarbituric acid-reactive ...
Viktoriya, Dzyuba +6 more
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Role of Ca2+ in the IVM of spermatozoa from the sterlet Acipenser ruthenus
Reproduction, Fertility and Development, 2016The role of Ca2+ in sturgeon sperm maturation and motility was investigated. Sperm from mature male sterlets (Acipenser ruthenus) were collected from the Wolffian duct and testis 24 h after hormone induction. Testicular spermatozoa (TS) were incubated in Wolffian duct seminal fluid (WDSF) for 5 min at 20°C and were designated ‘TS after IVM’ (TSM ...
Olga, Bondarenko +3 more
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[Meiotic gynogenesis in the stellate, Russian sturgeon and sterlet].
Ontogenez, 2003Diploid 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 +7 more
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2014
Larvae of the "European" (ARR) and "Siberian" (ARM) sterlets were fed initially with Tubifex, and further were gradually weaned to dry diet. Additionally two other feeding strategies were tested in ARM: feeding exclusively with dry diet, and sudden weaning from 10 day post-hatch (dph). Survival and yield at 30 dph of
Feledi, Tibor, Rónyai, András
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Larvae of the "European" (ARR) and "Siberian" (ARM) sterlets were fed initially with Tubifex, and further were gradually weaned to dry diet. Additionally two other feeding strategies were tested in ARM: feeding exclusively with dry diet, and sudden weaning from 10 day post-hatch (dph). Survival and yield at 30 dph of
Feledi, Tibor, Rónyai, András
openaire +1 more source