Bueno-Krawczyk A C D, Guiloski I C, Piancini L D S, Azevedo J C, Ramsdorf W A, Ide A H, Guimarães A T B, Cestari M M, Silva de Assis H C
Ecology and Conservation Post-graduate Program, Federal University of Paraná, P.O. Box 19031, Curitiba-Paraná 81531-990, Brazil.
Department of Pharmacology, Federal University of Paraná, P.O. Box 19031, Curitiba-Paraná 81531-990, Brazil.
Chemosphere. 2015 Sep;135:257-64. doi: 10.1016/j.chemosphere.2015.04.064. Epub 2015 May 15.
We aimed to evaluate the ecological integrity of a large river, which receives agricultural and urban effluents and is used to water public supply. The fish species Astyanax bifasciatus was used as bioindicator during winter and spring 2012, and summer 2013 at the Middle Iguaçu River basin in Paraná state, Brazil. Water chemical and physical measures and ecotoxicological tests were carried out as well biochemical and genetic biomarkers in sampled fish in each period. The studied area was divided in three sample points: SP1, located where the water is collected to public supply; SP2, located in an urbanized area, and SP3, located at an urbanized area with the discharge of the sewage treatment. Although water chemical and physical analyzes were range of the Brazilian law to hydric bodies, anticholinesterasic effects were found in winter, oxidative stress in summer and spring. The higher genotoxic effect was in winter to all sample points. The temporal variation in biomarkers and the detection of caffeine in the water call attention to the water quality in this river mainly to be used to public supply.
我们旨在评估一条大河的生态完整性，该河流接纳农业和城市污水，且用于公共供水。2012年冬春季节以及2013年夏季，在巴西巴拉那州伊瓜苏河中游流域，将双线脂鲤用作生物指示物种。在每个时期，对采样的鱼类进行了水化学和物理测量、生态毒理学测试以及生化和遗传生物标志物检测。研究区域分为三个采样点：SP1位于取水用于公共供水处；SP2位于城市化区域；SP3位于有污水处理排放的城市化区域。尽管水化学和物理分析结果在巴西水体相关法律规定范围内，但在冬季发现了抗胆碱酯酶效应，在夏季和春季发现了氧化应激。所有采样点在冬季的遗传毒性效应最高。生物标志物的时间变化以及水中咖啡因的检测引起了人们对这条主要用于公共供水的河流的水质的关注。
