Niveles de Coliformes Totales Y Escherichia Coli en bivalvos de interés comercial Ostrea columbiensis y Mytella guyanensis (molusca: bivalvia) como bioindicador de contaminación microbiológica en el Estero Puerto Hondo, Provincia del Guayas – Ecuador
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2010
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Este estudio examinó los niveles de Coliformes totales y E. coli como Bioindicadores de contaminación en dos especies de moluscos bivalvos (Mytella y Ostrea) en cuatro estaciones del estero Puerto Hondo durante la época seca con el propósito de evaluar la presencia de estos microorganismos y la inocuidad bacteriana de los moluscos extraídos de esta zona desde el punto de vista sanitario. El rango de los resultados obtenidos de coliformes totales fue de 20 a 815 UFC/g. y de 20 a 350 UFC/g para E.coli en todas las muestras de Mytella con excepción de la muestras de Ostrea que no hubo presencia de E.coli. Las concentraciones encontradas de estos bioindicadores de contaminación indican que los bivalvos estudiados no son aptos para el consumo humano y que el estero donde fueron recolectados, se encuentra contaminado con aguas residuales que no han sido tratadas.
In the present study levels of total coliforms and E. coli as pollution bioindicators were examined in two bivalve mollusks (Mytella and Ostrea) in four sampling sites at Puerto Hondo during dry season in order to evaluate presence of these microorganisms and the bacterial harmlessness for human of these mollusks harvested from this zone from a sanitary point of view. The range for total coliforms was 20 to 815 CFU/g and from 20 to 350 FCU/g for E. coli in Mytella samples, in Ostrea E. coli was absent. Concentration of these pollution bioindicators pointed out that studied bivalves harvested in this area are not suitable for human consumption and site where samples were collected are polluted by untreated sewage water.
In the present study levels of total coliforms and E. coli as pollution bioindicators were examined in two bivalve mollusks (Mytella and Ostrea) in four sampling sites at Puerto Hondo during dry season in order to evaluate presence of these microorganisms and the bacterial harmlessness for human of these mollusks harvested from this zone from a sanitary point of view. The range for total coliforms was 20 to 815 CFU/g and from 20 to 350 FCU/g for E. coli in Mytella samples, in Ostrea E. coli was absent. Concentration of these pollution bioindicators pointed out that studied bivalves harvested in this area are not suitable for human consumption and site where samples were collected are polluted by untreated sewage water.
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BIVALVOS, NIVELES, CONTAMINACIÓN, ORGANISMOS, COLIFORMES TOTALES, ECHIRICHIA COLI