Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation

被引：105

作者：

Coat, Sophie ^{[1
]}

Monti, Dominique ^{[1
]}

Legendre, Pierre ^{[2
]}

Bouchon, Claude ^{[1
]}

Massat, Felix ^{[3
]}

Lepoint, Gilles ^{[4
]}

机构：

[1] Univ Antilles Guyane, DYNECAR EA 926, Marine Biol Lab, UFR Sci, BP592, F-97159 Pointe A Pitre, Guadeloupe, France

[2] Univ Montreal, Dept Sci Biol, Montreal, PQ H3C 3J7, Canada

[3] Univ Montreal, LDA26, Lab Dept Anal, F-26000 Valence, France

[4] Univ Liege, MARE Ctr, Lab Oceanol, B-4000 Sart Tilman Par Liege, Belgium

来源：

ENVIRONMENTAL POLLUTION | 2011年 / 159卷 / 06期

关键词：

Organochlorines; Bioaccumulation; Freshwater; Food web; Stable isotope; PESTICIDE-RESIDUES; TROPHIC TRANSFER; WATER; KEPONE; HEXACHLOROCYCLOHEXANE; CONTAMINATION; ACCUMULATION; CHLORDECONE; SEDIMENT; SYSTEM;

D O I：

10.1016/j.envpol.2011.02.036

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Concentrations of organochlorine pesticides and stable isotope ratios of nitrogen and carbon were measured in a tropical freshwater ecosystem to evaluate the contamination level of biota and examine the bioaccumulation patterns of pollutants through the food web. Chemical analyses showed a general and heavy contamination of the entire food web. They revealed the strong accumulation of pollutants by juveniles of diadromous fishes and shrimps, as they re-enter the river. The role of ecological factors in the bioaccumulation of pesticides was evaluated. Whereas the most persistent pollutants (chlordecone and monohydro-chlordecone) were related to the organisms diet and habitat, bioaccumulation of beta-HCH was only influenced by animal lipid content. The biomagnification potential of chlordecone through the food chain has been demonstrated. It highlighted the importance of trophic transfer in this compound bioaccumulation process. In contrast, bioconcentration by passive diffusion from water seemed to be the main exposure route of biota to beta-HCH. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1692 / 1701

页数：10

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