评估世界遗产遗址的水质,使用鱼类捕食者的生物标志物
Hugo de Andrade Gonçalves Dos Santos1, Rafael Shinji Akiyama Kitamura2, Gésica da Costa Bernardo Soares3
1Ecology and Conservation Post-Graduate Program, Federal University of Paraná, PO Box 19031, 81530-980 Curitiba, PR, Brazil.
The Science of the total environment
|April 4, 2024
概括
环境污染影响了巴西瓜拉瓜库河 (Guaraguaçu River) 的鱼类健康. 生物标志物揭示了顶级捕食者的神经毒性和氧化应激,即使在水中没有可检测的农药.
科学领域:
- 环境毒理学环境毒理学
- 水生生态系统的健康状况
- 使用鱼类生物标志物进行生物监测.
背景情况:
- 顶级捕食鱼是人类对水生生态系统影响的有效生物监测器.
- 瓜拉瓜库河是世界遗产,面临城市增长和旅游业的污染.
- 人类活动引入污染物,影响水生生物群的健康.
研究的目的:
- 评估人类活动对瓜拉瓜库河水质的影响.
- 为了分析顶级鱼类捕食者的环境污染生物标志物,Hoplias malabaricus.
- 评估污染物对鱼类健康和水生生态系统完整性的影响.
主要方法:
- 鱼类 (Hoplias malabaricus) 在人类冲击的梯度上收集.
- 对水样进行了微量元素和农药分析.
- 在鱼类组织中分析了包括抗氧化系统,组织病理学,基因毒性和神经毒性在内的生物标志物.
主要成果:
- 在水中检测到微量元素 (Al,Fe,Mn);没有发现农药.
- 在受影响的部门观察到神经毒性影响 (大脑乙胆酶降低) 和氧化应激 (增加抗氧化活性,脂氧化).
- 来自受影响地区的鱼类中存在细胞系病变和基因毒性 (微核).
结论:
- 瓜拉瓜库河的水质不佳对鱼类健康有不利影响,生物标志物反应表明了这一点.
- 对顶级捕食鱼的生物监测揭示了人类活动对水生生态系统的微妙影响.
- 即使没有可检测的农药,环境污染也会影响生物群的健康,强调需要改善水质管理.
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