Survival and distribution of Vibrio cholerae in a tropical rain forest stream

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Description

For 12 months Vibrio cholerae and fecal coliforms were monitored along with 9 other water quality parameters at 12 sites in a rain forest watershed in Puerto Rico. Densities of V. cholerae and fecal coliforms were not significantly correlated even though the highest densities of both bacteria were found at a sewage outfall. High densities of V. cholerae were also found at pristine sites high in the watershed. V. cholerae and Escherichia coli were inoculated into membrane diffusion chambers, placed at two sites and monitored for 5 days on two different occasions. Two different direct count methods indicated that the ... continued below

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32 p.

Creation Information

Perez-Rosas, N. & Hazen, T. C. Spring 1988.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 14 times . More information about this report can be viewed below.

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Authors

  • Perez-Rosas, N. Univ. of Puerto Rico, Rio Piedras (Puerto Rico). Microbial Ecology Lab.
  • Hazen, T. C. E.I. DuPont de Nemours and Co., Aiken, SC (United States). Savannah River Lab.

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Publisher

  • Savannah River Laboratory
    Publisher Info: E.I. DuPont de Nemours and Co., Savannah River Lab., Aiken, SC (United States)
    Place of Publication: Aiken, South Carolina

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Description

For 12 months Vibrio cholerae and fecal coliforms were monitored along with 9 other water quality parameters at 12 sites in a rain forest watershed in Puerto Rico. Densities of V. cholerae and fecal coliforms were not significantly correlated even though the highest densities of both bacteria were found at a sewage outfall. High densities of V. cholerae were also found at pristine sites high in the watershed. V. cholerae and Escherichia coli were inoculated into membrane diffusion chambers, placed at two sites and monitored for 5 days on two different occasions. Two different direct count methods indicated that the density of E. coli and V. cholerae did not change significantly during the course of either study. Physiological activity, as measured by INT-reduction and relative nucleic acid composition declined for E. coli during the first 12 h then increased and remained variable during the remainder of the study. V. cholerae activity, as measured by relative nucleic acid concentrations, remained high and unchanged for the entire study. INT-reduction in V. cholerae declined initially but regained nearly all of it`s original activity within 48 h. This study suggests that V. cholerae is an indigenous organism in tropical freshwaters and that assays other than fecal coliforms or E. coli must be used for assessing public health risk in tropical waters.

Physical Description

32 p.

Notes

OSTI as DE98007473

Source

  • Other Information: PBD: [1988]

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Identifier

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  • Other: DE98007473
  • Report No.: DP-MS--88-077
  • Grant Number: AC09-89SR18035;AC09-76SR00001
  • DOI: 10.2172/666266 | External Link
  • Office of Scientific & Technical Information Report Number: 666266
  • Archival Resource Key: ark:/67531/metadc708896

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Creation Date

  • Spring 1988

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • March 23, 2016, 11:23 a.m.

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Perez-Rosas, N. & Hazen, T. C. Survival and distribution of Vibrio cholerae in a tropical rain forest stream, report, Spring 1988; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc708896/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.