作者：
WANG Yuan;XIONG Li;TANG HongFeng;SHENG XiuMei;LOU An;...
期刊：
水生生物学报,2006年30(6): 680-683 ISSN：1000-3207
作者机构：
[WANG Yuan; XIONG Li; TANG HongFeng; SHENG XiuMei; LOU An; LI Jin] College of Life Sciences, Central China Normal University
关键词：
Beta- cypermethrin;Acute toxicity;GPT;GOT
摘要：
Beta-cypermethrin is one of the synthetic pyrethroid, which is widely used to control insect pests and is found to be more effective than organphosphates and carbamates. However, it is also reported to be more toxic than organphosphates and carbamates. It has been suggested that synthetic pyrethroids are readily absorbed by the gills of fish even at very low concentrations.Glutamic-pyruvic transaminase (GPT) and glutamic-oxaloacetic transaminase (GOT) exist in the cells of every tissue, particularly in the liver. If the liver is damaged, the enzymes are discharged from the cells into the serum. It increases the GPT and GOT metabolic activities quickly. It is, therefore, proposed that the effects of toxicants on serum GPT and GOT could be used as indexes in toxicological assessments. In this experiment, the effectiveness of beta-cypermethrin on the acute toxicity and on serum GPT and GOT concentration of crucian carp was studied. The LC50 of beta-cypermethrin for crucian carp was 11.4μg/L. The crucian carp serum was treated against beta-cypermethrin levels of 0.114μg/L, 0.57μg/L and 1.14μg/L for exposure times of 0d, 5d,10d, 15d and 20d, at all concentrations. The results show that when the beta-cypermethrin concentration increases and the exposure time is prolonged, the GPT and GOT activities of serum increased also. The results proved that beta-cypermethrin could cause great damage to crucian carp and its biochemical functions.
作者机构：
[Xiong, L] Cent China Normal Univ, Coll Life Sci, Wuhan 430079, Peoples R China.;Jiangsu Univ, Sch Med Technol, Zhenjiang 212001, Peoples R China.;Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
通讯机构：
[Xiong, L] C;Cent China Normal Univ, Coll Life Sci, Wuhan 430079, Peoples R China.
关键词：
cypermethrin;Daphnia magna HB;toxicity
摘要：
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.
作者机构：
[生秀梅; 谢丽强; 熊丽] College of Life Science, Central China Normal University, Wuhan 430079, China;[夏宜琤; 吴振斌] State Key Lab. Freshw. Ecol./Biotech, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
通讯机构：
[Xiong, L.] C;College of Life Science, , Wuhan 430079, China
