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首页> 外文期刊>Applied Microbiology >Spatial and Temporal Variation in Enterococcal Abundance and Its Relationship to the Microbial Community in Hawaii Beach Sand and Water
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Spatial and Temporal Variation in Enterococcal Abundance and Its Relationship to the Microbial Community in Hawaii Beach Sand and Water

机译：夏威夷海滩沙和水肠球菌丰度的时空变化及其与微生物群落的关系

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摘要

Recent studies have reported high levels of fecal indicator enterococci in marine beach sand. This study aimed to determine the spatial and temporal variation of enterococcal abundance and to evaluate its relationships with microbial community parameters in Hawaii beach sand and water. Sampling at 23 beaches on the Island of Oahu detected higher levels of enterococci in beach foreshore sand than in beach water on a mass unit basis. Subsequent 8-week consecutive samplings at two selected beaches (Waialae and Kualoa) consistently detected significantly higher levels of enterococci in backshore sand than in foreshoreearshore sand and beach water. Comparison between the abundance of enterococci and the microbial communities showed that enterococci correlated significantly with total Vibrio in all beach zones but less significantly with total bacterial density and Escherichia coli . Samples from the different zones of Waialae beach were sequenced by 16S rRNA gene pyrosequencing to determine the microbial community structure and diversity. The backshore sand had a significantly more diverse community and contained different major bacterial populations than the other beach zones, which corresponded to the spatial distribution pattern of enterococcal abundance. Taken together, multiple lines of evidence support the possibility of enterococci as autochthonous members of the microbial community in Hawaii beach sand.
机译：最近的研究报道了海洋沙滩中的粪便指标肠球菌含量高。这项研究旨在确定肠球菌丰度的时空变化，并评估其与夏威夷沙滩和水中微生物群落参数的关系。在瓦胡岛上的23个海滩进行采样，以质量单位计，海滩前滨沙中的肠球菌含量高于海滩水中。随后在两个选定的海滩（Waialae和Kualoa）连续进行了8周的采样，结果一致地发现，后沙的肠球菌水平明显高于前/近岸沙和海滩水。比较肠球菌和微生物群落的丰富度表明，肠球菌与所有海滩地区的总弧菌呈显着相关，而与总细菌密度和大肠埃希氏菌无关。通过16S rRNA基因焦磷酸测序对来自Waialae海滩不同区域的样品进行测序，以确定微生物群落结构和多样性。与其他海滩区相比，后沙具有明显更多样化的群落，并包含不同的主要细菌种群，这与肠球菌丰度的空间分布模式相对应。综上所述，多种证据支持肠球菌成为夏威夷海滩沙土中微生物群落的自发成员的可能性。

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