PCB Accumulation and Alterations of Lipids in Two Length Classes of the Oyster Crassostrea angulata and of the Clam Ruditapes decussatus

摘要

Polychlorinated biphenyls (PCB) were analysed in two length classes of the oyster Crassostrea angulata and the clam Ruditapes decussates collected in Sado estuary and Ria Formosa, respectively. Oysters showed no significant dif- ferences (p<0.05) in accumulation with size, while smaller clams presented higher PCB levels than the larger ones. The PCB accumulation in same size classes of the two species, and the effect of PCB-exposure on their lipids were investigated during 60 d under laboratory controlled conditions.