TY JOUR TI CONTENT OF MERCURY IN MUSCLES OF HYDROBIONTS IN THE CASPIAN SEA KW sprat KW roach KW Russian sturgeon KW Persian sturgeon KW Caspian seal KW zooplanktophages KW benthophages KW predator KW mercury KW bioaccumulation JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Ershova, T.. AU Zaitsev, V.. AU Chaplygin, V.. PY 2016 IS PB Astrakhan State Technical University