Toxicity of cypermethrin to Daphnia magna HB

Article type: Research Article

Authors: SHENG, Xiu-mei^; | XIONG, Li | WU, Zhen-bin | TANG, Hong-feng | LIU, Tao | WANG, Yuan

Affiliations: College of Life Science, Central China Normal University, Wuhan 430079, China | of Medical Technology, Jiangsu University, Zhenjiang 212001, China | Institute of Hydrobiology, CAS, Wuhan 430072, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: The acute toxic effect of the pesticide cypermethrin to Daphnia magna HB was examined. D. magna HB was exposed to cypermethrin at concentrations of 0, 1, 3, 5, 7, and 9 mg/L for 24 h. Data showed that the 24 h-LC_{50} of cypermthrin on D. magna HB was 4.81 mg/L. In contrast, the 24 h-LC_{50} of K_2Cr_2O_7 (the national standard toxicant) to Daphnia magna was 0.38 mg/L in the current study. Results indicated that the Daphnia magna was very sensitive to pesticides. In addition, the effects of the culture condition (such as hardness, temperature and DO etc.) on Daphnia magna HB was also studied.

Keywords: cypermethrin, Daphnia magna HB, toxicity

Journal: Journal of Environmental Sciences, vol. 16, no. 5, pp. 770-771, 2004