Assessment the toxic effects of dimethoate to rotifer using swimming behavior.

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210046, People's Republic of China.

Bulletin of environmental contamination and toxicology 2012 Sep

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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·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.

Citation

Ruixin Guo, Xinkun Ren, Hongqiang Ren. Assessment the toxic effects of dimethoate to rotifer using swimming behavior. Bulletin of environmental contamination and toxicology. 2012 Sep;89(3):568-71