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Published on: February 16, 2016
Diafenthiuron causes developmental toxicity in zebrafish (Danio rerio)
Menglan Su1, Rongkai Bao1, Yaqing Wu2
1Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, PR China.
Diafenthiuron insecticide exposure harms zebrafish development, causing shorter body lengths and reduced liver function. This study reveals its toxicity to aquatic ecosystems, impacting pituitary and liver development.
Area of Science:
- Environmental Toxicology
- Developmental Biology
- Aquatic Ecotoxicology
Background:
- Diafenthiuron is a widely used insecticide and acaricide.
- Its high toxicity to non-target organisms is known, but developmental effects are unclear.
Purpose of the Study:
- To investigate the developmental toxicity of diafenthiuron in zebrafish.
- To elucidate the underlying mechanisms of diafenthiuron's toxicity.
Main Methods:
- Zebrafish embryos were exposed to varying concentrations of diafenthiuron (0.01, 0.1, 1 µM) from 3 to 120 hours post-fertilization.
- Assessed effects on body length, superoxide dismutase activity, and gene expression (pomc, prl, fabp10a).
Main Results:
- Diafenthiuron exposure significantly reduced zebrafish larval body length.
- Decreased superoxide dismutase activity and altered expression of pituitary development genes (pomc, prl).
- Downregulated liver-specific gene (fabp10a) expression, indicating liver development inhibition.
Conclusions:
- Diafenthiuron exhibits developmental toxicity and hepatotoxicity in zebrafish.
- Findings are crucial for assessing the environmental risks of diafenthiuron in aquatic ecosystems.
