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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 11, No. 3, 2014, pp. 711-718
Bioline Code: st14070
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 11, No. 3, 2014, pp. 711-718

 en Long-term and short-term variations of Escherichia coli population structure in tropical coastal waters
Tan, K. W. & Lee, C. W.


In this study, monthly and daily samplings were carried out at Klang, an eutrophic estuary, and at Port Dickson, an oligotrophic coastal water system. Escherichia coli check for this species in other resources concentration was measured via culture method, and the phylogenetic structure of E. coli population was via Clermont typing. Average E. coli concentration at Klang was higher than Port Dickson (t = 2.97, df = 10, p<0.05), and daily sampling did not show any apparent temporal variation at both sites. At Klang, salinity was inversely correlated with coliform (R2 = 0.216, df = 25, p<0.05), suggesting that river flow was a mode of transport for coliform. Although E. coli concentration was higher at the eutrophic site, E. coli population structure at both Klang and Port Dickson were similar and showed neither long-term nor short-term variations. This study showed the predominance of commensal groups A and B1 in tropical coastal waters of Peninsular Malaysia.

Faecal pollution; Clermont typing; E. coli loading rate; Straits of Malacca

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