Influence of water temperature, salinity, and pH on survival and growth of toxigenic Vibrio cholerae serovar 01 associated with live copepods in laboratory microcosms

Huq, A.; West, Paul; Small, Eugene B.; Huq, M. I.; Colwell, Rita R.

doi:10.1128/aem.48.2.420-424.1984

Cited by 270 publications

(119 citation statements)

References 12 publications

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“…Nevertheless, such observations may reflect the influence of gut structure and function on bacterial colonization in the crustacean digestive system. In particular, the chitinous lining of the hindgut has been suggested to be an important substrate for the colonization/attachment of bacteria in a number of crustacean species (Kaneko and Colwell 1975;Huq et al 1983;Huq et al 1984;Huq et al 1986;Dempsey et al 1989;Harris et al 1991). In contrast, the disruptive grinding and filtering actions of the foregut, which also support a chitinous lining, have been suggested to preclude any substantial bacterial colonization (Hood et al 1971).…”

Section: Discussionmentioning

confidence: 99%

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

et al. 2002

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Aims: There is growing awareness of the influence of the bacterial composition of the gut on the health and growth of the host. This study compared the bacterial flora from the digestive system of the wild and cultured prawn, Penaeus merguiensis. Methods and Results: Whole guts were dissected from wild and cultured prawns and divided into sections corresponding to the foregut, digestive gland, midgut and hindgut. Homogenates of these sections were plated onto seawater nutrient agar and the colonies identified to genus level and, in some cases, species. Quantitative and qualitative comparisons amongst gut regions for both wild and cultured prawns are presented. Conclusions: Both wild and cultured prawns supported remarkably similar bacterial floral compositions, which included members from the genera Aeromonas, Plesiomonas, Photobacterium, Pseudoalteromonas, Pseudomonas and Vibrio. Members of the genus Vibrio were quantitatively dominant. A number of Vibrio species were recovered solely from cultured prawns. Of these, Vibrio gazogenes was the most notable (numerically dominating in all but the midgut). The opportunistic pathogen V. parahaemolyticus was also recovered. Significance and Impact of the Study: The remarkable similarity of gut compositions between wild and cultured prawns, despite being drawn from very different habitats, suggests an influence of the host on the establishment of the gut flora. An understanding of host/gut floral interactions has significance in fostering conditions which promote the growth of cultivated hosts.

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Section: Discussionmentioning

confidence: 99%

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

et al. 2002

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“…Various environmental factors such as sunlight, precipitation, salinity, temperature, and nutrients are suggested for survival and growth of cholera bacteria in the aquatic environment (Singleton et al, 1982;Huq et al, 1984;Epstein, 1993). Cholera bacteria attach to zooplanktons by forming a thin pathogenic biofilm (Reidl and Klose, 2002).…”

Section: Introductionmentioning

confidence: 99%

Tracking Cholera in Coastal Regions Using Satellite Observations¹

Jutla

Akanda

Islam³

2010

J American Water Resour Assoc

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Cholera remains a significant health threat across the globe. The pattern and magnitude of the seven global pandemics suggest that cholera outbreaks primarily originate in coastal regions and then spread inland through secondary means. Cholera bacteria show strong association with plankton abundance in coastal ecosystems. This review study investigates relationship(s) between cholera incidence and coastal processes and explores utility of using remote sensing data to track coastal plankton blooms, using chlorophyll as a surrogate variable for plankton abundance, and subsequent cholera outbreaks. Most studies over the last several decades have primarily focused on the microbiological and epidemiological understanding of cholera outbreaks. Accurate identification and mechanistic understanding of large scale climatic, geophysical and oceanic processes governing cholera-chlorophyll relationship is important for developing cholera prediction models. Development of a holistic understanding of these processes requires long and reliable chlorophyll dataset(s), which are beginning to be available through satellites. We have presented a schematic pathway and a modeling framework that relate cholera with various hydroclimatic and oceanic variables for understanding disease dynamics using latest advances in remote sensing. Satellite data, with its unprecedented spatial and temporal coverage, have potentials to monitor coastal processes and track cholera outbreaks in endemic regions.

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“…The water pH at the Gabba fish landing site was within the range suitable for growth only during January-March 2010, while it was below 7 for the other months. A pH value below 7 was shown to not favour the multiplication of V. cholerae (Huq et al 1984).…”

Section: Presence Of V Cholerae Determined By Selective Enrichment Tmentioning

confidence: 87%

“…Vibrio cholerae has been observed to grow in freshwater (Vital et al 2007;Huq et al 1983;Colwell et al 1996), confirming the hypothesis that V. cholerae reservoir was in the environment. Vibrio cholerae was observed to grow best within an alkaline -pH range above 8.5 (Huq et al 1984). Within Lakes George and Albert, the pH was >8.5 throughout the sampling months, providing a suitable pH for the growth and survival of V. cholerae.…”

Section: Presence Of V Cholerae Determined By Selective Enrichment Tmentioning

confidence: 96%

Occurence of Culturable Vibrio cholerae from Lake Victoria, and Rift Valley Lakes Albert and George, Uganda

2012

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Vibrio cholerae, a bacterium that causes cholera, poses a human health risk when consumed via untreated or contaminated water. Monthly investigations into the presence of V. cholerae from Lakes Albert, George and Victoria were conducted, with the goal being to examine the relationship between the occurrences of V. cholerae with various water quality parameters at fish landing sites in major water bodies in Uganda. The pH, temperature and electrical conductivity were measured at three fishing sites in each of the three study lakes; namely Gabba in Lake Victoria, Butiaba in Lake Albert and Kayanzi in Lake George. The pH values varied from 7.76 to 9.36 at Butiaba, 8.68 to 9.85 at Kayanzi and 6.6 to 9.88 at Ggaba. The temperature ranged from 17.9 to 32.3 °C at Butiaba, 22.5 to 29 °C at Kayanzi and 18.2 to 30.5 °C at Ggaba. The electrical conductivity ranged from 129.2 to 984 μS cm−1 at Butiaba, 658 to 1090 μS cm−1 at Kayanzi and 119 to 218 μS cm−1 at Ggaba, for Lakes Albert, George and Victoria, respectively. Enrichment techniques were used to detect culturable V. cholerae on TCBS culture media. Seventy‐five (75%) of the samples (n = 90) were positive for V. cholera. The occurrence of V. cholerae was positively associated with water quality parameters over the 10‐month period of study. Vibrio cholerae was more frequently detected during the dry season (warmer) than during the wet season. These study results suggest the investigated study lakes are natural reservoirs for V. cholerae.

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Influence of water temperature, salinity, and pH on survival and growth of toxigenic Vibrio cholerae serovar 01 associated with live copepods in laboratory microcosms

Cited by 270 publications

References 12 publications

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

Tracking Cholera in Coastal Regions Using Satellite Observations¹

Occurence of Culturable Vibrio cholerae from Lake Victoria, and Rift Valley Lakes Albert and George, Uganda

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Influence of water temperature, salinity, and pH on survival and growth of toxigenic Vibrio cholerae serovar 01 associated with live copepods in laboratory microcosms

Cited by 270 publications

References 12 publications

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

Bacterial flora from the gut of the wild and cultured banana prawn, Penaeus merguiensis

Tracking Cholera in Coastal Regions Using Satellite Observations1

Occurence of Culturable Vibrio cholerae from Lake Victoria, and Rift Valley Lakes Albert and George, Uganda

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Product

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Tracking Cholera in Coastal Regions Using Satellite Observations¹