Document Detail

Level of contamination and impact of pesticides in cupped oyster, Crassostrea gigas, reared in a shellfish production area in Normandy (France).
MedLine Citation:
PMID:  18941988     Owner:  NLM     Status:  MEDLINE    
Over the last decade, oysters in the Bay of Veys (Northwest France) have sporadically experienced significant summer mortality events which appear to be due to a combination of extrinsic and intrinsic factors. In the present work, the involvement of pesticides (as additional stressors) was investigated using both artificial exposure and field studies (at two sites). Six herbicides were detected in seawater following tests for a total of 15 herbicides. The most estuarine site was the most contaminated, showing relatively high values compared with those recorded in a neighboring river. No pesticides were detected in the flesh of oysters in the field but exposure experiments led to an accumulation of two substituted ureas (diuron and isoproturon, from 0.5 micro g/L and 1 micro gL(- 1) respectively). Some physiological effects were observed in terms of reproduction (partial spawning) and histopathology (atrophy of the digestive tubule epithelium) but results related to other tissue alterations and to neutral red retention (NRR) assays were not conclusive and require further investigation.
Sophie Buisson; Valerie Bouchart; Edwige Guerlet; Jean Paul Malas; Katherine Costil
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes     Volume:  43     ISSN:  1532-4109     ISO Abbreviation:  J Environ Sci Health B     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-10-22     Completed Date:  2009-02-13     Revised Date:  2009-07-21    
Medline Journal Info:
Nlm Unique ID:  7607167     Medline TA:  J Environ Sci Health B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  655-64     Citation Subset:  IM    
Laboratoire de Biologie et Biotechnologies Marines, Universite de Caen B-N, Caen Cedex, France.
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MeSH Terms
Crassostrea / drug effects*,  metabolism
Diuron / analysis,  toxicity
Environmental Exposure / analysis*
Gametogenesis / drug effects
Pesticides / toxicity*
Phenylurea Compounds / analysis,  toxicity
Water Pollutants, Chemical / toxicity*
Water Pollution, Chemical / analysis*
Reg. No./Substance:
0/Pesticides; 0/Phenylurea Compounds; 0/Water Pollutants, Chemical; 330-54-1/Diuron; 34123-59-6/isoproturon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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