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Population similarity of enterococci and Escherichia coli in surface waters: A predictive tool to trace the sources of fecal contamination

机译：地表水中肠球菌和大肠杆菌的种群相似性：一种追踪粪便污染源的预测工具

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摘要

A biochemical fingerprinting method (the PhPlate system) was used to compare similarities between Escherichia coli and enterococci populations from surface water samples with those found in different animal species during the wet and the dry seasons in order to predict the dominant source(s) of fecal contamination in a local creek. A significant increase in the number and diversity of enterococci was observed in the creek during the wet season. Enterococci population from water samples also showed a higher population similarity with animal species than did E. coli. A higher population similarity was found between both indicator bacteria and animal species during the wet season with highest population similarities found in dogs, horses, cows and kangaroos. In contrast, a low population similarity was found for both fecal indicator bacteria from humans with water samples during the wet and the dry seasons, indicating that humans are not a major source of contamination in the studied creek. The results also indicate that the population similarity analysis of enterococci population has an advantage over E. coli in tracing the possible source(s) of contamination in the studied creek and that population similarity analysis as used in this study can be used to predict the source(s) of fecal contamination in surface waters.
机译：为了预测粪便的主要来源，使用了一种生化指纹法（PhPlate系统）比较了地表水样本中大肠杆菌和肠球菌种群与不同动物物种中发现的样本之间的相似性。当地小溪的污染。在雨季期间，在小河中观察到肠球菌的数量和多样性显着增加。与大肠杆菌相比，水样中的肠球菌种群与动物物种的种群相似性更高。在雨季，指示菌和动物物种之间的种群相似性更高，在狗，马，牛和袋鼠中发现的种群相似性最高。相反，在潮湿和干燥季节，人类粪便指示菌与水样的粪便指示菌之间的种群相似性均较低，这表明人类并不是研究小河中主要的污染源。结果还表明，肠球菌种群的种群相似性分析在研究小河中可能的污染源方面比大肠杆菌具有优势，该研究中使用的种群相似性分析可用于预测来源粪便在地表水中的污染。

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