Increased prevalence of indicator and pathogenic bacteria in Vembanadu Lake: a function of salt water regulator, along south west coast of India

Chandran, Abhirosh; Hatha, A. A. Mohamed; Varghese, Siby

doi:10.2166/wh.2008.069

Cited by 21 publications

(10 citation statements)

References 14 publications

(5 reference statements)

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“…Menurut Byappanahalli et al (2009) keberadaan Salmonella terkait dengan peningkatan aktivitas masyarakat seperti pembuangan air limbah. Faktor lain yang berpengaruh terhadap tingginya populasi Salmonella di perairan disebabkan pencemaran limbah fekal, yang masuk ke dalam situ (Chandran et al, 2008).…”

Section: Kualitas Perairan Periode Ramadanunclassified

Kualitas Perairan pada Bulan Ramadan di Situ Gintung, Tangerang Selatan, Banten

Wardhana

Nadila

ansyah³

et al. 2017

Jurnal Biodjati

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Section: Kualitas Perairan Periode Ramadanunclassified

Kualitas Perairan pada Bulan Ramadan di Situ Gintung, Tangerang Selatan, Banten

Wardhana

Nadila

ansyah³

et al. 2017

Jurnal Biodjati

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“…The first was a direct plating procedure, which included inoculating 0.2 ml river water (Chandran et al 2008). Blue-green colonies were recorded as V. parahaemolyticus and yellow colonies were considered as V. cholerae and held for further biochemical testing.…”

Section: Bacteriological Analysismentioning

confidence: 99%

“…Blue-green colonies were recorded as V. parahaemolyticus and yellow colonies were considered as V. cholerae and held for further biochemical testing. In the second method, 10 ml of river water samples were inoculated into 40 ml alkaline peptone water for pre-enrichment in a conical flask and incubated at 37°C for 24 h characterization (Chandran et al 2008). Flasks showing growth in enrichment broths were streaked onto TCBS agar and incubated at 37°C for 24-48 h. Typical colonies, whenever present, were isolated, restreaked to ensure purity and maintained on nutrient agar slants for further biochemical.…”

Section: Bacteriological Analysismentioning

confidence: 99%

Prevalence of indicator and pathogenic bacteria in a tropical river of Western Ghats, India

Vincy

Brilliant²,

Pradeepkumar

2015

Appl Water Sci

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The Meenachil, the only river that flows through the heart of the Kottayam district of Kerala state, India was selected for the study. The present study has been carried out with an objective to systematically examine the prevalence of indicator and pathogenic microorganisms and to compare the microbiological quality of the river water during the pre-monsoon and post-monsoon seasons. Water samples from 44 different sites during pre-monsoon and post-monsoon seasons were collected for the analysis. During the pre-monsoon period, the faecal coliform count ranged from 230 to 110,000 MPN/100 ml while there was a variation from 200 to 4600 MPN/100 ml during the postmonsoon period. When the faecal streptococci count was analysed, it ranged from 140 to 110,000 MPN/100 ml during the pre-monsoon and 70 to 4600 MPN/100 ml during the post-monsoon seasons, respectively. All the samples collected were found to have total viable count (TVC) higher than those prescribed by Bureau of Indian Standards (ISI 1991). Total viable counts were found in the range of 1.1 9 102 to 32 9 102 cfu/ml in the pre-monsoon and 1.0 9 102 to 26 9 102 cfu/ml in the post-monsoon. The presence of faecal indicator bacteria, Escherichia coli and potentially pathogenic bacteria, Vibrio cholerae, Vibrio parahaemolyticus and Salmonella enterica in the Meenachil River indicates that the bacteriological quality of the Meenachil River is poor. Moreover, it sheds light to the fact that raw sewage is being dumped into the Meenachil River. Urban runoffs and effluents of rubber factories appear to be the important sources of faecal contamination in the river. From this study, we conclude that these water bodies pose significant public health hazards. Adequate sanitary infrastructure will help in preventing source water contamination. Besides this, public health education aimed at improving personal, household and community hygiene is urgent.

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“…Test Organisms: Confirmed cultures of E. coli, S. paratyphi and V. parahaemolyticus isolated from Vembanadu Lake (Abhirosh et al, 2008) were maintained in the culture collection of the Microbiology Department of the School of Environmental Sciences. These were used for survival studies.…”

Section: Survival Experimentsmentioning

confidence: 99%

“…Also, there is different opinion about the individual roles of protozoan predation, autochthonous bacterial competition and the effect of bacteriophages on the regulation of enteric bacterial populations in different aquatic environments. In our previous study we observed high prevalence of E. coli, S. paratyphi and V. parahaemolyticus in Vembanadu Lake (Abhirosh et al, 2008). Hence it is very important to study the factors affecting the survival of these organisms in estuarine water.…”

Section: Introductionmentioning

confidence: 96%

Untitled

2009

WATER

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SummaryMicrocosm studies have been carried out to evaluate the role of biological factors such as protozoan predation, bacteriophages and autochthonous bacterial competition on the survival of Escherichia coli, Salmonella paratyphi and Vibrio parahaemolyticus in estuarine water at 20 o C and 30 o C. The role of protozoans was studied using raw estuarine water. The effect of competing autochthonous bacteria was studied in autoclaved estuarine water inoculated with heterotrophic bacteria isolated from the estuarine water. All the microcosms were inoculated with the above three microorganisms at a concentration of 10 6-7 cfu/ml. Of the three factors protozoan predation was the major factor (followed by bacteriophages) influencing the mortality of the test organisms. Competition by autochthonous bacterial population had little effect on the test organisms. In cycloheximide treated and non-treated estuarine water, E. coli, S. paratyphi and V. parahaemolyticus showed more robust survival at 20 o C than at 30 o C. However, no significant (P>0.05) variation in the survival of the test organisms was observed in cycloheximide-treated, non-treated and in microcosm-inoculated with autochthonous bacteria. This information is important in order to understand self-purifying factors and their relative importance in the aquatic environments.

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Increased prevalence of indicator and pathogenic bacteria in Vembanadu Lake: a function of salt water regulator, along south west coast of India

Cited by 21 publications

References 14 publications

Kualitas Perairan pada Bulan Ramadan di Situ Gintung, Tangerang Selatan, Banten

Kualitas Perairan pada Bulan Ramadan di Situ Gintung, Tangerang Selatan, Banten

Prevalence of indicator and pathogenic bacteria in a tropical river of Western Ghats, India

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