Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 89, Issue 3, Pages 568-571Publisher
SPRINGER
DOI: 10.1007/s00128-012-0712-x
Keywords
Dimethoate; Rotifer; Aquatic toxicity; Swimming behavior
Categories
Funding
- Key Program of the Natural Science Foundation of Jiangsu Province of China [BK2011016]
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The toxic effects of the common organophosphorus pesticide dimethoate on freshwater zooplankton Brachionus calyciflorus (rotifer) were tested. Because of the advantages of behavioral response in environmental monitoring, swimming behavior was used as the endpoint in this research. After exposure 6 h at five dimethoate concentrations (0.18, 0.53, 0.88, 1.23 and 1.59 mg center dot L-1), the pesticide disrupted the balance in rotifer swimming direction and caused an obvious direction preference. It also inhibited significantly the swimming angular and linear speed. Our results showed that dimethoate has a sublethal toxic effect on this aquatic invertebrate.
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