Heavy metal content of fish communities inhabiting the Yugoslav section of the River Danube
Maletin, S.; Djukic, N.; Obradovic, S.; Ivanc, A.; Miljanovic, B.; Pujin, V.; Zhenjun, S.
Concentrations of eight heavy metals (Cd, Co, Cu, Fe, Mn, Ni, Pb, Zn) were determined in water and in the muscles and organs (gills, liver, spleen, gonads) of fish: planktivores (Alburnus alburnus), benthivores (Carassius auratus, Cyprinus carpio, Tinca tinca) and piscivores (Anguilla anguilla, Esoxlucius, Micropterus salmoides, Silurus glanis, Stizostedion lucioperca) inhabiting the Yugoslav section of the Danube (main river and canal system Danube - Tisa - Danube). Fish were caught by electrofishing in 1991. The heavy metal (HM) content of fish muscles and organs was higher than in the water. Planktivorous species accumulated the lowest amounts of HM whereas benthivorous fish concentrated the largest amounts; piscivorous fish from the Danube had a lower HM content than those inhabiting the canal system, where the HM content of the water was higher.