According to results of ichthyological monitoring the sterlet population in middle part Severnaya Dvina river spring period 2018–2020 established a greater dependence value catches stationary traps on dynamics water level river, compared with temperature. On spawn places located traps, dominates both quantity and mass. Average catch per unit fishing effort (CPUE) is more dependent than Age leng...

Herein we demonstrated the effect of oxygen and air atmosphere on the success of short-term storage of sperm obtained from rainbow trout (Oncorhynchus mykiss), sterlet (Acipenser ruthenus) and common carp (Cyprinus carpio) diluted in immobilizing media (100 mM NaCl, 40 mM KCl, 3 mM CaCl2, 1.5 mM MgCl2, 50mM Tris, pH 8.2 for salmonid fish, 17 mM NaCl, 1.7 mM KCl, 6 mM NaHCO3, 0.5 mM CaCl2, 0.5 m...

Hypophysectomy was performed on sexually mature sterlets, Acipenser ruthenus L., in summer and autumn. The operation usually lasted about 45 sec, but never longer than 90 sec. After the parasphenoid was stripped, an ellipsoid hole was trepanated at the level of the eyes. The hypophysis was ablated by catching its rostral end with a pincer. As the result of the extirpation of the hypophysis the ...

LJUBOJEVIC, D., D. TRBOVIC, J. LUJIC, O. BJELIC-CABRILO, D. KOSTIC, N. NOVAKOV and M. CIRKOVIC, 2013. Fatty Acid Composition of Fishes from Inland Waters. Bulg. J. Agric. Sci., Supplement 1: 62–71 The paper presents a comparative analysis of proximate and fatty acid composition of seven fi sh species from the Danube River including asp (Aspius aspius), common bream (Abramis brama), common barbe...

While the potamodromous sterlet was common in past throughout Upper Danube Germany and Austria, it nearly vanished second half of 20th century. Until recently, only one small isolated reproductive sub-population is known from German–Austrian border. However, remnants another section downstream Vienna, near Austrian–Slovakian border, were discovered 2014. An assessment population size most impor...

Several whole genome duplication (WGD) events followed by rediploidization took place in the evolutionary history of vertebrates. Acipenserids represent a convenient model group for investigation of the consequences of WGD as their representatives underwent additional WGD events in different lineages resulting in ploidy level variation between species, and these processes are still ongoing. Ear...