Aeromonas SPP In Sardinian Snail Farms

Abstract

Snails, also known as Gastropod molluscs of the order Stilommatophoridae, belonging to the family Helicidae, are farmed in Sardinian agriculture. Nonetheless, this practice is currently causing numerous problems and critical issues. Setting up snail farming facilities demands high organisational standards to optimise production, as well as continuous in-depth technical training for dedicated personnel. The aim of this paper was to acquire knowledge on the epidemiology and ecology of Aeromonas spp. in snail farms and to assess the pathogenicity of the different strains, isolated through molecular characterisation of virulence genes. In order to do this, snails belonging to the genus and species Helix aspersa (N.22) and irrigation water (N.22) from various farms in Sardinia were sampled and microbiological culture investigations for Aeromonas spp. were carried out. The microorganisms isolated were subjected to culture and molecular investigations for the characterisation of virulence genes. From this study, it was possible to highlight the presence of 15 positive samples for Aeromonas spp. In addition, it was discovered that the origin of the contamination was often associated with unexpected factors, which were not under the control of those responsible for the plant. As a result, this study revealed the need for further preventive actions in two key aspects; improve the production in the surveillance of the farms; increase the assessment of associated risks caused by virulent strains that may compromise product quality and consumer safety.