Pettibone G W
Department of Biology, State University of New York College at Buffalo 14222, USA.
J Appl Microbiol. 1998 Oct;85(4):723-30. doi: 10.1111/j.1365-2672.1998.00585.x.
Density of Aeromonas spp. at one site in the Buffalo River and at four sites on its upstream tributaries was followed from June 1992-June 1993. Membrane filtration counts of Aeromonas during the summer ranged between 18 and 4000 ml-1, which were one to two logs higher than faecal coliform and faecal streptococci densities. Aeromonas spp. in the Buffalo River, and faecal coliforms, faecal streptococci, and the heterotrophic plate count throughout the watershed, increased by approximately one log during summer rainstorms. However, Aeromonas spp. increased only by a factor of two during rainstorms at the upstream sites. Aeromonas spp. showed a strong positive correlation with both indicator bacteria and total suspended solids at the upstream sites during the summer but not the winter. Correlations between Aeromonas and indicator bacteria remained strong in the Buffalo River during the winter, signifying that different conditions exist in the Buffalo River and its upstream tributaries. The strong correlation between Aeromonas spp. and indicator bacteria in the Buffalo River suggest that, in the absence of media capable of the quantitative recovery of potentially pathogenic aeromonads, standard faecal coliform analyses may adequately assess public health risks from Aeromonas spp. in an urban river used for recreational purposes.
1992年6月至1993年6月期间，对布法罗河某一地点及其上游支流的4个地点的气单胞菌属密度进行了跟踪监测。夏季气单胞菌的膜过滤计数在18至4000 ml-1之间，比粪大肠菌群和粪链球菌密度高1至2个对数。布法罗河中的气单胞菌属以及整个流域的粪大肠菌群、粪链球菌和异养平板计数在夏季暴雨期间增加了约1个对数。然而，上游站点在暴雨期间气单胞菌属仅增加了两倍。夏季上游站点的气单胞菌属与指示菌和总悬浮固体均呈强正相关，但冬季则不然。冬季布法罗河中气单胞菌与指示菌之间的相关性仍然很强，这表明布法罗河及其上游支流存在不同的条件。布法罗河中气单胞菌属与指示菌之间的强相关性表明，在缺乏能够定量回收潜在致病性气单胞菌的培养基的情况下，标准粪大肠菌群分析可能足以评估用于娱乐目的的城市河流中气单胞菌属对公共健康的风险。
