Heavy metals in crustaceans from the Iberian deep sea plain

摘要: Trace metals (Cd, Cu, Pb and Zn) were analysed in different well-defined mixed copepod euphausiid samples as well individually decapods collected during a cruise on board “RV Walther Herwig III” to the Iberian Deep Sea Plain March April, 2002. We found substantial interspecific heterogeneity with partially high mean Cd levels decapods: 1.9 mg kg-1 dry weight of genus Sergia; 6.1 Acanthephyra pelagica (Risso, 1816) acanthithelsonis Bate, 1888; 10.7 Bentheogennema intermedia (Bate, 1888); 14.9 Benthesicymus iridescens (Bate 1881) 16.3 Systellaspis debilis (A. Milne Edwards, 1881). The agreement these concentrations those reported for polar crustaceans, Cu (17–56 kg-1) that indicate total metabolic requirements have probably not been met, support hypothesis frequently Cd-anomaly crustaceans might be extended other relatively deep ocean waters like this related corresponding deficiency. Zn from study (52–80 are within worldwide range, which indicates able regulate their body concentrations. Our preliminary data zooplankton suggest far below 1 serve regional background value comparison biomonitoring studies. Results Cd, largely especially Central Southern North Sea.