Otolith microchemistry interrogation of comparative contamination by Cd, Cu and PCBs of eel and flounder, in a large SW France catchment

• Published in: Estuarine, Coastal and Shelf Science
• Main Authors: Daverat, F., Tapie, N., Quiniou, L., Maury Brachet, R., Riso, R., Eon, M., Laroche, J., Budzinski, H.
• Other Authors: CEMAGREF BORDEAUX UR EPBX FRA, UNIVERSITE DE BORDEAUX I FRA, -, CNRS UNIVERSITE DE BORDEAUX I UMR 5805 EPOC ARCACHON FRA
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2011
• Subjects: CADMIUM; ANGUILLA ANGUILLA; OTOLITHE; POLLUTION DE L'EAU; CONTAMINATION; POLYCHLORURE DE BIPHENYLE; PCB; STATOLITHS; POLYCHLORINATED BIPHENYLS; WATER POLLUTION; Anguilla anguilla; European eel
• Online Access: https://irsteadoc.irstea.fr/cemoa/PUB00033779

Individual European flounder and European eel levels of contamination by cadmium, copper and 7PCBs were related to their retrospective pattern of habitat use, using a combined toxicology and otolith microchemistry approach. The results showed that both species used the freshwater, the upper and lower estuarine habitats. There was a strong difference in the level of contamination of eel compared to flounder, with higher levels of PCBs, copper (Cu) and cadmium (Cd) in eel. The differences of contamination between muscle and liver were also specific to the considered species. The choice of the river habitat at an early age seemed to increase the risk of exposure to PCBs. The results suggested that the use of the upper estuary was related to a higher level of copper for both species and of PCBs for the flounder. The higher level of liver cadmium was measured for fish spending the longer time in the lower estuary.