Acipenser fulvescens, the lake sturgeon, belongs to one of the few extant non-teleost ray-finned (bony) fishes. The sturgeons (family Acipenseridae) have a phylogenetic history that dates back about 250 million years. The study reported here is the first investigation of peripheral coding strategies for spectral analysis in the auditory system in a non-teleost bony fish. We used a shaker system...

Acipenser persicus is one of the economically valuable fishes in the Caspian Sea. Due to the economical and cultural importance of sturgeons in the world, understanding of sturgeon reproduction is necessary for successful management of their populations in aquaculture and nature. To improve the culture methods and to facilitate captive breeding programs to support restocking, it is necessary to...

Sturgeons (Order Acipenseriformes) represent an extremely valuable natural resource that is now facing depletion. In the current study we evaluate if the traditional classification in subspecies of Acipenser gueldenstaedtii, Acipenser stellatus and Huso huso, endemic to Ponto-Caspian region is sustained by molecular analysis and if these represent Evolutionary Significant Units (ESUs) that shou...

Aeromonas hydrophila is an opportunistic pathogen of a variety of aquatic animals that displays extreme diversity in drug resistance, phenotypes, virulence genes, and virulence. In this study, eight pathogenic A. hydrophila strains were isolated from diseased Amur sturgeons and investigated for their sensitivity to select antibiotics, their phenotype, virulence genes, and virulence. According t...

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...

Abstract It is considered that most infections caused by pathogen agents in fish species raised the closed medium like fishing farms originate from natural environment, thus there are few information on virus transmission aquaculture programs to wild ones. This issue important taking into account sturgeon populations critically endangerment, and regarding IUCN Red List, two of these already dec...

The complex of conducted studies will form and substantiate the concept development a new direction aquaculture - fish farming at installations with closed water supply system.
 During assimilation equipment, features growing sturgeon in network installation were studied, quality aquatic environment was characterized, main requirements for mixed feed rearing determined, much more.
 re...