Accumulation Levels and Spatial Distributions of Organochlorine Pesticides in Crucian Carp (Carassius auratus (gibelio) langsdorfii) in Japan

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  • 日本におけるギンブナ（Ｃａｒａｓｓｉｕｓ　ａｕｒａｔｕｓ（ｇｉｂｅｌｉｏ）ｌａｎｇｓｄｏｒｆｉｉ）中の有機塩素系農薬類蓄積状況
  • ニホン ニ オケル ギンブナ Carassius auratus gibelio langsdorfii チュウ ノ ユウキ エンソケイ ノウヤクルイ チクセキ ジョウキョウ

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Abstract

Persistent organochlorine pesticides (OCPs), dichlorodiphenyltrichloroethane and its metabolites (DDTs), chlordane and related compounds (CHLs), heptachlor and its metabolites (HPCs), aldrin, dieldrin and endrin (DRNs), hexachlorobenzene(HCB), mirex and isomers of hexachlorocyclohexane (HCHs), in the muscles of crucian carp that were collected from 14 rivers and lakes throughout Japan during 2003-2005 were determined. OCPs were detected in all samples and the total concentrations ranged from 0.98 to 18 ng/g wet wt. or 120 to 1,600 ng/g lipid wt. Highest concentrations of OCPs were found in large cities, followed by small cities, agricultural areas and remote areas. CHLs and DDTs were the predominant compounds at almost all sites. Biota-sediment accumulation factors (BSAFs) of OCPs for crucian carp were calculated using the concentrations in sediment samples taken from the same locations as crucian carps. The obtained BSAFs of OCPs were higher than PCDDs and PCDFs, and comparable to dioxin-like PCBs. Maternal transfer rates of crucian carps in the spawning season were 21-37% comparable to or higher than those of dioxins.

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