Repositori URV

Identifier: TDX:523

Handle: https://hdl.handle.net/20.500.11797/TDX523

Authors:
Collado González, Luis Roberto

Abstract:
The genus Arcobacter includes species associated with human and animal diseases. However, its prevalence in water is unknown and so far do not exist methods able to differentiate the nine accepted species. In this thesis we have developed a molecular identification method (16S rDNA-RFLP) that enables the differentiation of most of species. In addition, we have demonstrated that the presence of Arcobacter in environmental waters correlates with high level of faecal pollution. Theses microorganisms showed a high prevalence in the Llobregat River and a high genetic diversity. However, these microorganisms were never detected from drinking water, which demonstrate that the treatment of the river water is effective for its elimination. Additionally, have been demonstrated the high prevalence of Arcobacter in several types of meat and shellfish. Finally, 4 new species have been discovered and described: Arcobacter mytili, Arcobacter valdiviensis, Arcobacter defluvii y Arcobacter molluscorum.