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. 1991 Sep;57(9):2459–2467. doi: 10.1128/aem.57.9.2459-2467.1991

Distribution and survival of motile Aeromonas spp. in brackish water receiving sewage treatment effluent.

P Monfort 1, B Baleux 1
PMCID: PMC183603  PMID: 1768120

Abstract

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.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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