| Acute and chronic toxicity of organophosphate monocrotophos to Daphnia magna. | |
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MedLine Citation:
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PMID: 19089713 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The acute and chronic toxicity of monocrotophos (MCP), the binary joint toxicity of MCP and bifenthrin (BF), and sodium dodecyl benzene sulfonate (SDBS) to Daphnia magna (D. magna) was evaluated. The 24 h-median effective concentration (24 h-EC(50)) and 48 h-median lethal concentration (48 h-LC(50)) of MCP towards D. magna were 161 and 388 micro g/L, respectively. In addition, the lowest-observed effective concentration (LOEC) and non-observed effective concentration (NOEC) of MCP to D. magna were 10 and 5 micro g/L, respectively. Furthermore, the chronic value (ChV) of MCP against D. magna was 7 micro g/L and the acute chronic ratio (ACR) was 55. The number of offspring per female and the intrinsic rate of natural increase (r) were identified as the parameters that were most sensitive to MCP. In addition, toxic unit (TU) analysis was employed to evaluate the joint toxicities. The calculated TU(mix) values of binary equitoxic mixtures of MCP + BF and MCP + SDBS were 1.47 and 1.63, respectively, which suggests that both equitoxic mixtures exert a limited antagonistic effect. The results of this study revealed that the toxic threshold of MCP towards D. magna is higher than its reported highest residue (4 micro g/L) in the ordinary aquatic environment, and that concurrent exposure to BF or SDBS may exert a slight antagonistic effect. |
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Authors:
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Lumei Wang; Weihong Ye; Shanshan Zhou; Kunde Lin; Meirong Zhao; Weiping Liu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes Volume: 44 ISSN: 1532-4109 ISO Abbreviation: J Environ Sci Health B Publication Date: 2009 Jan |
Date Detail:
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Created Date: 2008-12-17 Completed Date: 2009-02-26 Revised Date: 2009-07-21 |
Medline Journal Info:
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Nlm Unique ID: 7607167 Medline TA: J Environ Sci Health B Country: United States |
Other Details:
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Languages: eng Pagination: 38-43 Citation Subset: IM |
Affiliation:
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Institute of Environmental Science, Zhejiang University, Hangzhou, P R China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acute Toxicity Tests Animals Benzenesulfonates / toxicity Daphnia / drug effects*, growth & development, metabolism Insecticides / toxicity* Monocrotophos / toxicity* Phosphoric Acid Esters / toxicity* Pyrethrins / toxicity Toxicity Tests, Chronic Water Pollutants, Chemical / toxicity* |
| Chemical | |
Reg. No./Substance:
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0/Benzenesulfonates; 0/Insecticides; 0/Phosphoric Acid Esters; 0/Pyrethrins; 0/Water Pollutants, Chemical; 27176-87-0/dodecylbenzenesulfonic acid; 6923-22-4/Monocrotophos; 82657-04-3/bifenthrin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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