TY JOUR TI EFFICIENCY OF NATURAL REPRODUCTION AND BIOLOGICAL CHARACTERISTICS OF THE SPAWNERS OF THE PERSIAN STURGEON (ACIPENSER PERSICUS BORODIN) IN THE CONDITIONS OF the REGULATED RUNOFF OF THE VOLGA RIVER KW Persian sturgeon KW Volga river KW population KW quantity KW migration KW yield to the fishery KW spawning grounds KW downstream migration of larvae KW natural reproduction JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Guteneva, G.. AU Ivanova, L.. PY 2015 IS 2015 PB Astrakhan State Technical University