长期暴露于二基除草剂会诱导Physalaemus cuvieri的形态,行为和生长变化
Diana Paula Giacomel1, Guilherme Felicioni1, Bruna Macedo Simoes Sergio1
1Laboratory of Ecology and Conservation, Federal University of Fronteira Sul, Erechim, Brazil.
Ecotoxicology (London, England)
|June 27, 2025
概括
基于二酸的除草剂 (DBH) 显著损害了Physalaemus cuvieri,减少了生存率并改变了行为和生理. 这凸显了农药对水生生态系统和生物指标物种的环境风险.
科学领域:
- 环境毒理学环境毒理学
- 生态毒理学 生态毒理学
- 两动物生物学
背景情况:
- 杀虫剂,包括除草剂,对非目标生物构成重大威胁,并导致两动物数量下降.
- 两动物是敏感的环境指标,使他们对评估生态系统健康至关重要.
- 基于二酸的除草剂 (DBH) 被广泛使用,但它们对敏感两动物物种的影响需要彻底调查.
研究的目的:
- 评估基于二酸盐的除草剂 (DBH) 对两生物指标物种Physalaemus cuvieri.的毒性.
- 评估DBH暴露对子生存,生长,形态和行为的影响.
主要方法:
- 在336小时的时间里,Physalaemus cuvieri头暴露在不同DBH度 (201500μg L−1) 的范围内.
- 评估的关键终点包括生存率,体重指数 (BMI),量化体重指数 (SMI),发育不良的发生和游泳活动.
主要成果:
- 1000和1500微克L-1的DBH暴露显著降低了子的存活率.
- 增加的BMI和SMI在20,50,1000和1500微克L-1.1的度下观察到.
- 在所有测试的DBH度中,形和游泳行为的改变普遍存在.
结论:
- 基于二酸的除草剂 (DBH) 对Physalaemus cuvieri幼具有很高的毒性,影响了它们的生存,生理和行为.
- 对DBH的敏感性对水生生态系统动力学和热带相互作用有影响.
- 研究结果强调,需要严格监测水生环境中的化学物质,以保护生物多样性,特别是非目标物种.
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