By conveying information of disease resistance, sexual signals may be used as cues for adaptive mate choice. Here we report observations on survival of laboratory-maintained, wild-collected, sexually mature, ready-to-spawn cyprinid fish, Rutilus rutilus (roach), under accidental epidemic attributed to Flavobacterium psychrophilum, diagnosed using species-specific PCR. The fish were maintained i...

Concern has been raised in recent years that exposure to wastewater treatment effluents containing estrogenic chemicals can disrupt the endocrine functioning of riverine fish and cause permanent alterations in the structure and function of the reproductive system. Reproductive disorders may not necessarily arise as a result of estrogenic effects alone, and there is a need for a better understan...

The effects of 7- and 14-day exposure to water-dissolved Cu at sublethal concentrations 0.01 0.1 mg/L subsequent increase in water temperature a rate 8°C/h on intestinal proteolytic activity (PA) amylolytic (AA), as well brain acetylcholinesterase (AChE) water-soluble protein (WSP) content juvenile roach Rutilus rutilus have been vivo studied. Additionally, the values upper were determined by c...

Abstract: Antenna array-based multi-dimensional infinite-impulse response (IIR) digital beamformers are employed in a multitude of radio frequency (RF) applications ranging from electronically-scanned radar, radio telescopes, long-range detection and target tracking. A method to design 3D IIR beam filters using 2D IIR beam filters is described. A cascaded 2D IIR beam filter architecture is prop...

Practically, there are endless variations of the implementation of Real-Time Distributed Systems @?TDSs).These variations are the consequences of the direrent hardware, system sojiivare architectures, and application requirements. These variations make the testing of RTDSs more implementation dependent. To the contrary benchmarking can be considered to be domain specific. Jn general any RTDS ca...

I . The scale of the roach (Leuciscus rutilus L.) was examined for state of calcification, metachromasy, and reaction to the periodic acid / Schiff (PAS) test. 2. Metachromasy and a positive PAS-reaction imply acid mucopolysaccharides in the bony layer. 3. There is a great increase in these reactions and in reactions for bone salts in the transition zone between the uncalcified and calcified pa...

Chemical contamination of aquatic environments to EDCs has become a major focus of environmental toxicology research. The exposure of fishes to estrogenic EDCs in aquatic environments is most frequently assessed by analyzing Vitellogenin (Vg) (the egg yolk precursor protein) expression. Therefore, characterization of Vg gene is of high priority for EDCs bio-monitoring. So, we prepared liver tis...