DISTRIBUTION AND SURVIVAL OF MOTILE AEROMONAS SPP IN BRACKISH WATER RECEIVING SEWAGE-TREATMENT EFFLUENT
DISTRIBUTION AND SURVIVAL OF MOTILE AEROMONAS SPP IN BRACKISH WATER RECEIVING SEWAGE-TREATMENT EFFLUENT
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DOI：
10.1128/aem.57.9.2459-2467.1991
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发表时间：
1991-09-01
影响因子：
4.4
通讯作者：
BALEUX, B
中科院分区：
文献类型：
--
作者：
MONFORT, P;BALEUX, B
气单胞菌属的时空分布。和粪大肠菌群在一个小海湾接收污水处理流出物和排放到咸水泻湖进行了为期34个月的研究，在六个站采样。共分离出452株气单胞菌。在处理系统的流出处和海湾的监测站被分离和识别。测定了289株气单胞菌的溶血活性。气单胞菌属（Aeromonas spp.）粪大肠菌群的分布呈季节性变化。这些季节性细菌循环在流出物、排放点和海湾中持续存在。然而，这些细菌分布的丰度水平逐渐下降，从海岸到开放的泻湖。稀释模型表明，气单胞菌属。和粪大肠菌群在海湾水体中的分布不仅受到稀释效应的影响，而且还受到其他环境因素如盐度的影响。A.温和菌属是在海湾水中存在的气单胞菌种群中鉴定的最常见的物种。生存研究证实，气单胞菌属，尤指sobria比粪大肠菌群对盐和/或海洋胁迫更敏感。在嗜水气单胞菌（AeromonaserediaandA.温和气单胞菌菌株分别有96%和97%产生溶血素，而在豚鼠气单胞菌菌株中，95%是非溶血性的。
The spatiotemporal distributions of Aeromonas spp. and fecal coliforms in a cove receiving sewage treatment effluent and draining into a brackish lagoon were studied for 34 months with sampling at six stations. A total of 452 strains of Aeromonas spp. were isolated and identified at the outflow of the treatment system and at stations in the cove. Hemolytic activity of 289 Aeromonas strains was determined. The Aeromonas spp. and fecal coliform distributions showed seasonal cycles in the pond effluent. These seasonal bacterial cycles were persistent in effluent, at the discharge point, and in the cove. However, the abundance levels of these bacterial distributions decreased gradually from the coast to the open lagoon. A dilution model showed that the Aeromonas spp. and fecal coliform distributions in the cove water were subject not only to dilution effect but also to other environmental factors, such as salinity. A. sobria is the most common species identified in the Aeromonas population present in the cove water. Survival studies confirmed that Aeromonas spp., especially A. sobria, were more sensitive to saline and/or marine stress than fecal coliforms. Among the Aeromonas hydrophila and A. sobria strains, 96 and 97%, respectively, produced hemolysin, whereas among the Aeromonas caviae strains, 95% were nonhemolytic.