Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6309331 | Chemosphere | 2014 | 9 Pages |
Abstract
Triazophos (TAP) has been widely used in agriculture for controlling insect pests and is a known organophosphorus pesticide. Due to TAP characteristics, such as high chemical and photochemical stability, its potential toxicity to aquatic organisms has gained great interest. To explore the potential developmental toxicity of TAP, Gobiocypris rarus embryos and larvae were exposed to various concentrations of TAP (0.1-15 mg Lâ1) until 72 h. Results showed that values of 72 h LC50 and EC50 were 7.44 and 5.60 mg Lâ1 for embryos, 2.52 and 1.37 mg Lâ1 for larvae. Increased malformation, decreased heart rate and body length provide a gradual concentration-dependent pattern. Enzyme activities and mRNA levels were significantly changed even at low concentration (0.05 mg Lâ1 for embryos and 0.01 mg Lâ1 for larvae). Overall, the present study points out that TAP is likely a risk to the early development of G. rarus. The information presented in this study will be helpful in better understanding the toxicity induced by TAP in fish embryos and larvae.
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Authors
Bin Zhu, Yu-Xin Gong, Lei Liu, Dong-Liang Li, Yuan Wang, Fei Ling, Gao-Xue Wang,