氯氰菊酯对大型溞HB的毒性

Toxicity of cypermethrin to Daphnia magna HB.

作者信息

Sheng Xiu-Mei, Xiong Li, Wu Zhen-Bin, Tang Hong-Feng, Liu Tao, Wang Yuan

机构信息

College of Life Science, Central China Normal University, Wuhan 430079, China.

出版信息

J Environ Sci (China). 2004;16(5):770-1.

PMID:15559809

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-LC50 of cypermthrin on D. magna HB was 4.81 mg/L. In contrast, the 24 h-LC50 of K2Cr2O7 (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.

摘要

研究了杀虫剂氯氰菊酯对大型溞HB的急性毒性作用。将大型溞HB暴露于浓度为0、1、3、5、7和9mg/L的氯氰菊酯中24小时。数据显示，氯氰菊酯对大型溞HB的24小时半数致死浓度（LC50）为4.81mg/L。相比之下，在本研究中，重铬酸钾（国家标准毒物）对大型溞的24小时LC50为0.38mg/L。结果表明，大型溞对农药非常敏感。此外，还研究了培养条件（如硬度、温度和溶解氧等）对大型溞HB的影响。