Metals and organochlorines in sperm whales (Physeter macrocephalus [P. catodon]) stranded around the North Sea during the 1994/1995 winter

animal aquatique aquatic animals baleine ballena efectos secundarios effet secondaire heavy metals insecticidas insecticide insecticides mar del norte marine animals marine areas mer du nord metales pesados nontarget effects north sea organochlorine compounds pesticide pesticides physeter physeter catodon plaguicidas residues residuos side effects whales zonas marinas