Bioaccumulation and metallothionein response in the asiatic clam (corbicula fluminea) after experimental exposure to cadmium and inorganic mercury

摘要

The involvement of metallothioneins (MTs) in cadmium (Cd) and inorganic mercury (Hg[III]) bioaccumulation by the freshwater bivalve Corbicula fluminea was experimentally investigated after 0, 15, 30, and 45 d of exposure form the water column source. Three levels of contamination were studied for each metal: 0, 5 and 35 μg Cd/L and 0, 1.45, and 5 μg Hg/L, with two replicates per condition. Forty eight experimental units (Eus) were conducted simultaneously. The mollusks were fed twice a week by additions of phytoplanktonic algae.