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vol.66 número2ALIMENTACION Y CONDUCTA ALIMENTARIA DE LA ALMEJA DE AGUA DULCE DIPLODON CHILENSIS (BIVALVIA: HYRIIDAE)BRYOZOA DE AGUAS SOMERAS EN BAHIA SOUTH, ISLA DOUMER, PENÍNSULA ANTARTICA índice de autoresíndice de materiabúsqueda de artículos
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Gayana (Concepción)

versión impresa ISSN 0717-652Xversión On-line ISSN 0717-6538

Resumen

LARA, Gladys; CONTRERAS, Angel  y  ENCINA, Francisco. THE FRESHWATER MUSSEL DIPLODON CHILENSIS  (BIVALVIA:HYRIIDAE) POTENTIAL BIOFILTER TO DIMINISHCOLIFORM  LEVELS OF WATER WELLS: LABORATORY EXPERIMENT. Gayana (Concepc.) [online]. 2002, vol.66, n.2, pp.113-118. ISSN 0717-652X.  http://dx.doi.org/10.4067/S0717-65382002000200005.

Previous studies carried out in rural communities in the IX Region, Chile, have detected up to 5.400 fecal coliforms by 100 ml in drinking water from wells mainly in shallow wells. Considering the pumping and water filtration capacity of the freshwater mussel Diplodon chilensis, a laboratory experiment was carried out to evaluate the capacity of the mussels to decrease coliform levels and to digest them. The experimental results showed that 15 to 25 specimens in 30 litres of water were able to diminish the water turbidity and the coliforms load in a 6 hour-period being able also to digest them

Palabras clave : freshwater mussel; Diplodon chilensis; biofilter; total coliforms; fecal coliforms; RAM; well waters.

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