Resumo

CORTEZ, Jackeline; RUIZ, Yassellis; MEDINA, Luís  e  VALBUENA, Oscar. Effect of culture media prepared with sea water over health indicators in sea water of the Chichiriviche resort, Falcon State, Venezuela. Rev. Soc. Ven. Microbiol. [online]. 2013, vol.33, n.2, pp.122-128. ISSN 1315-2556.

Due to their use by humans and to preserve public health, recreational marine environments should fulfill physico-chemical and microbiological quality prerequisites. Nevertheless, anthropogenic activities such as agriculture, cattle raising, industrial, touristic and domestic, can discharge contaminated water at marine beaches. The present methods for evaluating the bacterial load of recreational waters does not appear satisfactory, especially concerning the detection of pathogenic microorganisms due to the presence, in marine waters, of viable but not cultivable bacteria (VNCB). This study evaluated the bacterial load of mesophilic aerobials, total and fecal coliforms, and enterococci at the Chichiriviche beaches, Falcon State, Venezuela, and the effect of marine water concentrations over the bacterial densities. The determinations were done in nutrient, Mac Conkey and KF agar prepared with distilled water (MAD) or with sea water (MSW). The bacterial load increased between 27 and 47 times when the culture media were supplement with sea water. The differences of the bacterial loads between MAD and MSW for mesophilic aerobials, total and fecal coliforms were statistically significant (p≤0.05). Dissolved oxygen and pH presented permissible values in both media.

Palavras-chave : balneability; sea water; VNCB; total and fecal coliforms; enterococci.

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