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首页> 外文期刊>Southeastern naturalist >Histopathological Analysis of Fish from Acorn Fork Creek, Kentucky, Exposed to Hydraulic Fracturing Fluid Releases
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Histopathological Analysis of Fish from Acorn Fork Creek, Kentucky, Exposed to Hydraulic Fracturing Fluid Releases

机译：暴露于水力压裂液释放的肯塔基州橡子叉河鱼类的组织病理学分析

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摘要

Fracking fluids were released into Acorn Fork, KY, a designated Outstanding State Resource Water, and habitat for the threatened Chrosomus cumberlandensis (Blackside Dace). As a result, stream pH dropped to 5.6 and stream conductivity increased to 35,000 μS/cm, and aquatic invertebrates and fish were killed or distressed. The objective of this study was to describe post-fracking water quality in Acorn Fork and evaluate if the changes in water quality could have extirpated Blackside Dace populations. Semotilus atromaculatus (Creek Chub) and Lepomis cyanellus (Green Sunfish) were collected from Acorn Fork a month after fracking in lieu of unavailable Blackside Dace. Tissues were histologically analyzed for indicators of stress and percent of fish with lesions. Fish exposed to affected Acorn Fork waters showed general signs of stress and had a higher incidence of gill lesions than unexposed reference fish. Gill lesions observed were consistent with exposure to low pH and toxic concentrations of heavy metals. Gill uptake of aluminum and iron was demonstrated at sites with correspondingly high concentrations of these metals. The abrupt and persistent changes in post-fracking water quality resulted in toxic conditions that could have been deleterious to Blackside Dace health and survival.
机译：压裂液被释放到肯塔基州橡子叉（橡树叉，肯塔基州，国家指定的杰出资源水）和濒临灭绝的Chrosomus cumberlandensis（Blackside Dace）的栖息地。结果，水流的pH值降至5.6，水流的电导率增加至35,000μS/ cm，水生无脊椎动物和鱼类被杀或受困。这项研究的目的是描述橡子叉压裂后的水质，并评估水质的变化是否可能使Blackside Dace种群灭绝。压裂后一个月，从橡子叉中收集了Semotilus atromaculatus（Creek Chub）和Lepomis cyanellus（Green Sunfish），以代替无法获得的Blackside Dace。对组织进行组织学分析，以寻找压力指标和带损伤鱼的百分比。暴露于受影响的橡子叉水域的鱼比未暴露的参考鱼表现出一般的压力迹象，并且lesions损伤的发生率更高。观察到的损伤与暴露于低pH和重金属毒性浓度一致。铝和铁的吸收在具有相应较高浓度的这些金属的地点得到证实。压裂后水质的突然而持续的变化导致了可能对Blackside Dace的健康和生存有害的有毒环境。

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