sperm morphology, biochemistry and physiology were compared between siberian sturgeon Acipenser baerii and sterlet A. ruthenus in the present study. We observed wide morphological variations between spermatozoa of the two species. the average length of the spermatozoon head was 7.01 and 5.14 μm in A. baerii and A. ruthenus, respectively. Significant differences were observed in terms of Na+, k+...

Serbian aquaculture is practiced in warmwater (carp) farms, coldwater (trout) cage systems, recirculating systems (RAS) and fish tanks. The total area under carp farms (ponds) registered by the Statistical Office of Republic Serbia (SORS) last fourteen years has varied between 6,192 8,940 ha, while trout was 33,255 m2 81,411 m2. Total production over 5,070 tons, recorded 2017 8,195 tons market ...

Black caviar is often thought to be a typically Russian luxurious food product. Recently, its production has extended due sturgeon aquaculture development. The analysis of the geographical affinities full-cycle companies and their aquaculture-sourced black implies that majority them employs Caviar brand and/or refers traditions history. However, names, brands, product positioning several tend m...

The aim of the research was to comparative study effectiveness synthetic antioxidants – lipid-soluble (butylated hydroxytoluene, BHT) and water–soluble (trolox) analogues vitamin E for cryopreservation Russian sturgeon sterlet sperm in presence modified Stein’s medium. ability phenolic reduce level lipid peroxidation sperm, beneficial effect on motility thawed has been shown. addition lipid- wa...

is a landlocked population restricted to a 270 km stretch of the Kootenai River, which flows from western Montana through northern Idaho and into British Columbia. This population has shown an almost complete lack of natural juvenile recruitment since 1974. The total adult population in 1998 was estimated to be about 650 individuals and this fish is currently classified as endangered by the Ida...

To increase the understanding of lake sturgeon (Acipenser fulvensens) in the upper Mississippi River a radio telemetry study was conducted in Pools 4 through 10. Currently lake sturgeon are listed as a species of concern. GIS analysis of available data was performed to determine the spatial relationships that exist between lake sturgeon and their habitat. Aquatic type, wing dam, revetted dam, a...

To improve the quality of frozen material during cryopreservation, scientists apply various effects on cells: mechanical, chemical or physical. In this work we use acoustic-mechanical cells before cryopreservation. As a result studies, optimal parameters impact piezoactuator were selected to defrosted reproductive male sturgeons. The object research was sperm Russian sturgeon. progressive motil...

  The salinity tolerance, hematological and hydromineral regulation capabilities of juvenile Russian sturgeon (Acipenser gueldenstaedtii) were investigated in different ages and sizes in freshwater (FW: 0.05) but differed in experimental media (p < 0.05). Signifi cant differences were observed between the levels of plasma ion concentrations in different media (p < 0.01). Plasma Na+, K+ and Ca+2...