title: Distinct bioaccumulation profile of pesticides and dioxin-like compounds by mollusk bivalves reared in polluted and unpolluted tropical bays: consumption risk and seasonal effect.
abstract: Mariculture activity has increased its production along the Atlantic Coast of Brazil over the last years. This protein source for human consumption may also represent risks due to the exposure to bioaccumulated contaminants in the tissues of organisms reared in polluted shallow waters. This study evaluated the bioaccumulation of pesticides and dioxin-like compounds in two commercial marine bivalve species reared at different sites along the Rio de Janeiro State coast (SE-Brazil). We observed distinct contamination profiles in bivalve tissues reared at each sampling site, which may be related to human activities historically developed in those areas. A pronounced tendency for higher contamination levels in animals sampled in the last month of winter (September) is discussed as being likely due to environmental issues, rather than biological factors. Based on Minimal Risk Level, Maximum Residue, Acceptable Daily Intake and Toxic Equivalent, bivalves are classified as safe for human consumption.
authors: Programa de Biofísica Ambiental, Universidade Federal do Rio de Janeiro, 21941-900 Rio de Janeiro, RJ, Brazil. mgpetrus@yahoo.com.br
authors: Petrus
authors: P
authors: Galvao
authors: Bernhard
authors: B
authors: Henkelmann
authors: Renan
authors: R
authors: Longo
authors: José
authors: J
authors: Lailson-Brito
authors: João Paulo Machado
authors: JP
authors: Torres
authors: Karl-Werner
authors: KW
authors: Schramm
authors: Olaf
authors: O
authors: Malm
mesh_terms: D000818:Animals; D061006:Bays; D049872:Bivalvia / Q000737:chemistry* / Q000378:metabolism*; D001938:Brazil; D003257:Consumer Product Safety; D004147:Dioxins / Q000032:analysis / Q000378:metabolism*; D010575:Pesticides / Q000032:analysis / Q000378:metabolism*; D012621:Seasons; D012758:Shellfish / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*; D014876:Water Pollution / Q000032:analysis
chemical_list: D004147:Dioxins; D010575:Pesticides; D014874:Water Pollutants, Chemical