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Genotoxic effects on fish species and water quality parameters of two tributaries of the Sinos River, Southern Brazil

机译:遗传毒性对巴西南部锡诺斯河两个支流的鱼类种类和水质参数的影响

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摘要

The integrated use of water quality parameters and the micronucleus test in fish represent a reliable tool in environmental assessment. Thus, this study aimed to evaluate water physicochemical and microbiological parameters and micronuclei (MN) and nuclear abnormalities (NA) frequencies in peripheral erythrocytes of three native fish species ( Bryconamericus iheringii , Diapoma alburnus and Hyphessobrycon luetkenii ) captured in the mouth of two tributaries (Ilha River and Paranhana River) of the Sinos River, Southern Brazil. Aluminium, iron and thermotolerant coliforms levels exceeded the limits established by the Brazilian legislation at both sampling sites. There were no differences in MN frequencies between sites and species; however, H. luetkenii presented higher rates of NA in comparison to D. alburnus captured in the Ilha River. Thus, this study provides the first in situ database of DNA damage for these fish species. Furthermore, water quality parameters indicate both sampling sites are under anthropic impacts.
机译:水质参数的综合使用和鱼类中的微核试验是环境评估中可靠的工具。因此,本研究旨在评估在两个支流口中捕获的三种天然鱼类(Bryconamericus iheringii,Diapoma alburnus和Hyphessobrycon luetkenii)的外周水红细胞的水理化和微生物学参数以及微核(MN)和核异常(NA)频率。巴西南部的西诺斯河(Ilha River和Paranhana河)。在两个采样点,铝,铁和耐热大肠菌群的含量均超过了巴西法律规定的限值。地点和物种之间的MN频率没有差异;然而,与在伊利亚河中捕获的狄氏链球菌相比,卢氏嗜血杆菌的NA发生率更高。因此,这项研究为这些鱼类的DNA损伤提供了第一个原位数据库。此外,水质参数表明两个采样点都受到人类的影响。

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