title: Decline in PCB levels in otters (Lutra lutra).
abstract: A decline in total PCB levels in tissues of otters (Lutra lutra) from England and Wales, averaging 8% per year over the period 1983-1992, is reported. Mean PCB levels are now unlikely to pose a threat to otter populations.
authors.affiliation: Department of Biological Sciences, University of Essex, Colchester, UK.
authors.forename: C F
authors.initials: CF
authors.lastname: Mason
mesh_terms: D000818:Animals; D004739:England; D004785:Environmental Pollutants / Q000032:analysis; D008099:Liver / Q000737:chemistry; D018482:Muscle, Skeletal / Q000737:chemistry; D010041:Otters; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014801:Vitamin A / Q000378:metabolism; D014852:Wales
chemical_list: D004785:Environmental Pollutants; D014801:Vitamin A; D011078:Polychlorinated Biphenyls