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Abstract
The responses of Echinogammarus echinosetosus to experimental cadmium exposure were analyzed. The LC50–96 hr for cadmium in this crustacean was 0.48 mg/L. Cadmium content reached a maximun of 18 μg/g after 48 hr of treatment to 200 μg Cd/L resulting in a calculated concentration factor of approximately 70. An increase in MT content was recorded in E. echinosetosus after 24 hr of cadmium exposure (100 μg/L). The high sensitivity this species shows to cadmium in comparison with other crustaceans may be due to a very low effectiveness in MT induction by cadmium (9 μg/g) and a moderate concentration factor which results in a low molar MT/Cd ratio (2×10‐3) in the cytosolic fraction.
