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| Jarde, Emilie; Jeanneau, Laurent; Harrault, Loic; Quenot, Emmanuelle; Solecki, Olivia; Petitjean, Patrice; Lozach, Solen; Cheve, Julien; Gourmelon, Michele. |
| This study identified sources of fecal contamination in three different French headwater and coastal catchments (the Justiçou, Pen an Traon, and La Fresnaye) using a combination of microbial source tracking tools. The tools included bacterial markers (three host-associated Bacteroidales) and chemical markers (six fecal stanols), which were monitored monthly over one or two years in addition to fecal indicator bacteria. 168 of the 240 freshwater and marine water samples had Escherichia coli (E. coli) or enterococci concentrations higher than “excellent” European water quality threshold. In the three catchments, the results suggested that the fecal contamination appeared to be primarily from an animal origin and particularly from a bovine origin in 52%... |
| Tipo: Text |
Palavras-chave: Fecal contamination; Host-associated Bacteroidales markers; Fecal stanols; Rainfall; MST toolbox; Mitigation actions. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00395/50597/51548.pdf |
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| Mieszkin, Sophie; Caprais, Marie-paule; Le Mennec, Cecile; Le Goff, Manon; Edge, T. A.; Gourmelon, Michele. |
| Aims: The aim of this study was to identify the origin of faecal pollution impacting the Elorn estuary (Brittany, France) by applying microbial source tracking (MST) markers in both oysters and estuarine waters. Methods and Results: The MST markers used were as follows: (i) human-, ruminant- and pig-associated Bacteroidales markers by real-time PCR and (ii) human genogroup II and animal genogroup I of F-specific RNA bacteriophages (FRNAPH) by culture/genotyping and by direct real-time reverse-transcriptase PCR. The higher occurrence of the human genogroup II of F-specific RNA bacteriophages using a culture/genotyping method, and human-associated Bacteroidales marker by real-time PCR, allowed the identification of human faecal contamination as the... |
| Tipo: Text |
Palavras-chave: Escherichia coli; Estuarine and river waters; F-specific RNA bacteriophages; Host-associated Bacteroidales markers; Microbial source tracking; Shellfish. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00153/26426/25250.pdf |
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