Purpose. To assess the variability of histological parameters medial zone roach (Rutilus rutilus) liver. establish level effect transformed conditions existence on fish physiological status. determine prospect using monitoring data in ichthyological practice to morphofunctional state fish. Methodology. Primary materials were obtained different parts Southern Bug River, which differ their degree...

Examination of the original literature concerning species of Philometra (Philometridae, Dracunculoidea) parasitic in the abdominal cavity of European cyprinids revealed that P. abdominalis Nybelin, 1928 is a junior synonym of P. ovata (Zeder, 1803), a parasite of cyprinids of the genera Gobio, Phoxinus and Leuciscus. The valid name of the species parasitizing cyprinids of the genera Abramis, Ru...

Different pollutants have undesirable effects on aquatic ecosystems, detergent powder is one of the elements in the sewages so study on the effects of this factor on  aquatic animals is crucial. The aim of the present study was to investigate acute effects of detergents as potentially dangerous additive to assess mortality effects of this product on some cultured fish. Silver Carp (Hypopht...

Ongoing climate change is leading to browning of many lakes and coastal areas, which can impair fish body growth biomass production. However, whether how effects light limitation caused by on vary over early ontogeny unknown. In this study, we set up a mesocosm experiment test roach (Rutilus rutilus) responses depend size, if findings are robust densities. We also studied potential mechanism fo...

Abstract The habitat quality of the littoral zone is key importance for almost all lentic fish species. In anthropogenically created gravel pit lakes, often structurally homogenized with limited habitats. We supplemented deadwood brush piles in eight lakes and investigated diurnal seasonal use this other typical microhabitats by six dominant Shoreline habitats were sampled using point abundance...

background: diazinon is an organophosphorous pesticide which widely found in municipal, agricultural, and urban storm water discharges. the present study was conducted to achieve lethal concentration (lc50) and behavioral changes of rutilus rutilus caspius and hypophthal-micthys molitrix after exposure to lethal concentration of diazinon. methods: the experiment was carried out in static condit...