Document Detail


Toxicity of pesticides to aquatic microorganisms: a review.
MedLine Citation:
PMID:  11351418     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Microorganisms contribute significantly to primary production, nutrient cycling, and decomposition in estuarine eco-systems; therefore, detrimental effects of pesticides on microbial species may have subsequent impacts on higher trophic levels. Pesticides may affect estuarine microorganisms via spills, runoff, and drift. Both the structure and the function of microbial communities may be impaired by pesticide toxicity. Pesticides may also be metabolized or bioaccumulated by microorganisms. Mechanisms of toxicity vary, depending on the type of pesticide and the microbial species exposed. Herbicides are generally most toxic to phototrophic microorganisms, exhibiting toxicity by disrupting photosynthesis. Atrazine is the most widely used and most extensively studied herbicide. Toxic effects of organophosphate and organochlorine insecticides on microbial species have also been demonstrated, although their mechanisms of toxicity in such nontarget species remain unclear. There is a great deal of variability in the toxicity of even a single pesticide among microbial species. When attempting to predict the toxicity of pesticides in estuarine ecosystems, effects of pesticide mixtures and interactions with nutrients should be considered. The toxicity of pesticides to aquatic microorganisms, especially bacteria and protozoa, is an area of research requiring further study.
Authors:
M E DeLorenzo; G I Scott; P E Ross
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  20     ISSN:  0730-7268     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2001 Jan 
Date Detail:
Created Date:  2001-05-15     Completed Date:  2001-06-21     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  84-98     Citation Subset:  IM    
Affiliation:
U.S. Department of Commerce/NOAA, National Ocean Service, Center for Coastal Environmental Health and Biomolecular Research, 219 Fort Johnson Road, Charleston, South Carolina 29412, USA. marie.delorenzo@noaa.gov
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MeSH Terms
Descriptor/Qualifier:
Animals
Marine Biology*
Pesticides / toxicity*
Water Microbiology*
Water Pollutants, Chemical / toxicity*
Chemical
Reg. No./Substance:
0/Pesticides; 0/Water Pollutants, Chemical

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


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