Cadernos de Saúde Pública
versión impresa ISSN 0102-311X
ARAUJO, Daniela Bastos; MARTINS, Suzana Cláudia Silveira; ALBUQUERQUE, Laurênia Maria Braga de y HOFER, Ernesto. Influence of the copepod Mesocyclops longisetus (Crustacea: Cyclopidae) on the survival of Vibrio cholerae O1 in fresh water. Cad. Saúde Pública [online]. 1996, vol.12, n.4, pp. 551-554. ISSN 0102-311X. http://dx.doi.org/10.1590/S0102-311X1996000400015.
In an experimental microcosm, an analysis was performed of the influence exerted by freshwater Mesocyclops longisetus copepods on the survival of Vibrio cholerae O1 serovar Inaba. In the State of Ceará, copepods are used in the control of Aedes aegypti larvae. The system consisted of water with a salinity of 0.27 and pH 7.5, which after sterilizing filtration was distributed into seven flasks with a volume of 400 ml; in each of six flasks, 10 live copepods were inoculated along with 1 ml of an 8-hour culture of Vibrio cholerae O1 at 37oC in Alkaline Peptone Water, resulting in a concentration of 3.80x104 colony-forming units. The control flask contained only the water with the same bacterial suspension. The system was maintained for six days at room temperature (25-28oC), and daily duplicate counts were performed in TCBS Agar. Results confirmed a clear association between Vibrio cholerae O1 and the live copepods, based on survival of the bacteria at compatible levels with the initial inoculation until the sixth day of the analysis.
Palabras llave : Vibrio cholerae; Copepods; Cholera; Water Microbiology.