Influence of the copepod Mesocyclops longisetus (Crustacea: Cyclopidae) on the survival of Vibrio cholerae O1 in fresh water

Cadernos de Saúde Pública

Daniela Bastos Araújo²  Suzana Cláudia Silveira Martins²  Laurênia Maria Braga De Albuquerque²  Ernesto Hofer¹ 

[1] ,Universidade Federal do CearáFortaleza CE ,Brasil

关键词: Vibrio cholerae;    Copepods;    Cholera;    Water Microbiology;    Vibrio cholerae;    Copépodes;    Cólera;    Microbiologia da Água;   

DOI  :  10.1590/S0102-311X1996000400015

来源: SciELO

【 摘 要 】

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 3.80x10(4) 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.

【 授权许可】

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