Effect of salinity on the depuration rate of metal pollutants by the brown shrimp Crangon crangon

Aquatic invertebrates are increasingly used as biomonitors of metal pollution. Therefore, understanding the depuration kinetics of metals in crustaceans is an important need for ecotoxicology. The brown shrimp Crangon crangon is a commercially important species in Europe, with a wide geographical range from the northeastern Atlantic to the Mediterranean. It is known to seasonally migrate between estuarine brackish waters and offshore saline waters. The present study aimed to determine the effect of salinity changes on the ability of C. crangon to depurate metal pollutants. Crangon crangon were caught in the upper Mersey estuary, a historically polluted area in England. They were reared in a control group and two treatment groups: a low salinity treatment and a high salinity treatment. The depuration of these animals was monitored during 10 days. Trace metal content in individual shrimp was determined by ICP-OES analysis. There was a decrease in metal concentration over time significantly for arsenic and zinc but not significantly for cadmium and manganese. There was no significant effect of salinity on the depuration rate of arsenic and zinc. The present study investigated depuration kinetics of heavy metals in C. crangon from actual pollution levels, which is unique compared to lab-induced metal accumulation.

Promotor(s) & Supervisor: Chiara Benvenuto, Debapriya Mondal

ISCED Categories

The highlighted icons, represent the fields of education (in compliance with ISCED Classification) engaged during this course/programme.

0511 - Biology", "0512 - Toxicology