This review summarizes the keynote speeches and some presentations on specific problems delivered by participants of interregional scientific practical round-table discussion “Interregional Intermunicipal Collaboration under Conditions Environmental Challenges in Volga Region” held June 29, 2021 at Kazan Federal University. The event was attended representatives local government authorities Rep...

Toxicity tests are commonly used as a tool to determine the standards of water quality for chemicals and to discover appropriate organisms as bioindicators in toxicological studies, and also could be used as an essential tool for evaluation of the pollutant effects in aquatic ecosystems. The aim of the present study was to evaluate the sensitivity of two Caspian fish species, Caspian trout as a...

HIGHLIGHTS Gynogenesis didn’t have significant effect on Caspian salmon immunological indices. weren’t any blood chemical Hematological indices show changes by gynogenesis. Growth characteristics were improved gynogenesis in fish.