皮拉姆在斑马鱼 (Danio rerio) 的毒性,生物积累和代谢
Liangliang Zhou1, Yanhong Li1, Chunyu He1
1Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State Key Laboratory of Agricultural and Forestry Biosecurity, Nanjing 210095, China.
Aquatic toxicology (Amsterdam, Netherlands)
|May 28, 2025
概括
皮拉姆真菌杀菌剂对斑马鱼的毒性较低,但适度生物积累. 阐明了其在水生生物中的代谢和解毒途径,有助于对生态风险进行评估.
科学领域:
- 环境毒理学环境毒理学
- 农业化学安全 农业化学安全
- 水生生态毒理学 水生生态毒理学
背景情况:
- 酸脱基酶抑制剂杀菌剂,如皮拉姆,在农业中广泛使用.
- 对皮拉姆对非标水生生物的潜在毒性存在担忧.
研究的目的:
- 评估皮拉姆在水生生物中的毒性和生物积累.
- 为了识别皮拉姆代谢物并阐明其代谢途径.
- 为全面评估皮拉姆的生态风险作出贡献.
主要方法:
- 在成年斑马鱼中确定了96小时的LC50.
- 在斑马鱼中测量生物度因子 (BCF).
- 在斑马鱼和水中使用预测模型识别了代谢物.
- 分析了与排毒相关的酶活动和基因表达.
主要成果:
- 皮拉姆对斑马鱼的毒性很低 (96小时LC50=17.82毫克/升).
- 皮拉姆被归类为中度生物累积 (BCF = 15.22-21.62),主要在内脏组织中积累.
- 提出了涉及第一阶段 (氧化,化) 和第二阶段 (葡萄糖化) 的代谢途径.
结论:
- 皮拉姆具有较低的直接毒性风险,但在水生环境中具有中等的生物积累潜力.
- 了解皮拉姆的新陈代谢和排毒对于准确的生态风险评估至关重要.
- 这些发现支持使用皮拉姆的明智管理策略,以保护水生生态系统和人类健康.
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