TY JOUR TI REVIEW OF SOME ECOLOGICAL ASPECTS OF STERLET (ACIPENSER RUTHENUS LINNAEUS, 1758) KW sterlet KW migration KW spawning KW accumulation of heavy metals KW genetic diversity KW protection from predators JO Vestnik of Astrakhan State Technical University AU Chemagin, A.. PY 2018 IS 2018 PB Astrakhan State Technical University