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Chapter 99 : Effects of Seawater Concentration and Temperature on the Survival of Serogroup 1

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Effects of Seawater Concentration and Temperature on the Survival of Serogroup 1, Page 1 of 2

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Abstract:

Legionellae are a predominantly aquatic family of bacteria commonly associated with water systems in the built environment. There are substantially fewer reports of the presence and survival of in the marine environment. Researchers have investigated the survival of serogroup (sg) 3 in saline solutions and seawater in laboratory microcosms. The results of these investigations showed that both increasing salinity and temperature reduced survival of the organisms. The limitations of the investigations were that heat sterilization of the seawater would have two major effects: (i) chemical alteration of the nature of the seawater and (ii) removal of other microflora. grow in conjunction with other microorganisms, and this has been clearly demonstrated in nonsterile tap water cultures. were cultured by direct inoculation of 0.1 ml of sample onto GVPC agar plates followed by incubation at 35°C for 7 days. Representative colony morphologies were enumerated and presumptively confirmed as species by subculture onto blood agar and buffered charcoal yeast extract. The survival of in nonsterile seawater decreased with increasing salinity. These results suggested that the organism was not capable of multiplication in the seawater. The protective role of amoebae and biofilm in survival and multiplication cannot be disregarded in this context. Terrestrial runoff and transient survival of is a plausible explanation for previous reports of relatively high concentrations of in coastal waters.

Citation: Bennett S, Bentham R. 2006. Effects of Seawater Concentration and Temperature on the Survival of Serogroup 1, p 420-422. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch99

Key Concept Ranking

Legionella pneumophila
0.8152173
Blood Agar
0.54347825
0.8152173
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Figures

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FIGURE 1

Survival of sg 1 in three dilutions of seawater at three temperatures. SW, seawater; DW, deionized water.

Citation: Bennett S, Bentham R. 2006. Effects of Seawater Concentration and Temperature on the Survival of Serogroup 1, p 420-422. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch99
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References

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1. Dutka, B. J. 1984. Sensitivity of Legionella pneumophila to sunlight in fresh and marine waters. Appl. Environ. Microbiol. 48:970974.
2. Fliermans, C. B. 1996. Ecology of Legionella: from data to knowledge with a little wisdom. Microb. Ecol. 32:203228.
3. Heller, R.,, C. Holler,, R. Sussmuth, and, K.-O. Gundermann. 1998. Effect of salt concentration and temperature on survival of Legionella pneumophila. Lett. Appl. Microbiol. 26:6468.
4. Ortiz-Roque C. M. and,, T. C. Hazen. 1987. Abundance and distribution of Legionellaceae in Puerto Rican waters. Appl. Environ. Microbiol. 53: 22312236.
5. Palmer, C. J.,, Y.-L. Tsai,, C. Paszko-Kolva,, C. Mayer, and, L. R. Sangermano. 1993. Detection of Legionella species in sewage and ocean water by polymerase chain reaction, direct fluorescent antibody and plate culture methods. Appl. Environ. Microbiol. 59:36183624.
6. Wadowsky, R. M.,, T. M. Wilson,, N. J. Kapp,, A. J. West,, J. M., Kuchta,, S. J. States,, J. N. Dowling, and, R. B. Yee. 1991. Multiplication of Legionella spp. in tap water containing Hart-manella vermiformis. Appl. Environ. Microbiol. 57: 19501954.

Tables

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TABLE 1

Salinity and chemical parameters in seawater microcosms

Citation: Bennett S, Bentham R. 2006. Effects of Seawater Concentration and Temperature on the Survival of Serogroup 1, p 420-422. In Cianciotto N, Kwaik Y, Edelstein P, Fields B, Geary D, Harrison T, Joseph C, Ratcliff R, Stout J, Swanson M (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555815660.ch99

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