Piscirickettsia salmonis is the etiological agent of Piscirickettsiosis, a severe disease that affects Atlantic salmon ( Salmo salar ) farmed in Chile and many other areas (Norway, Scotland, Ireland, Canada and the USA). This study investigated the effects of low‐dose P. salmonis infection (1 × 10 2 CFU/ml) on Atlantic salmon. In this study, we challenged fish with an isolated representative of the EM‐90 genogroup via intraper...

The aetiological agent of Piscirickettsiosis is Piscirickettsia salmonis, a Gram‐negative intracellular pathogen, and high doses of antibiotics have regularly been employed to treat this infection. Seven florfenicol and/or oxytetracycline resistance genes ( tet pump , tetE , Tclor/flor , Tbcr , TfloR , ompF and mdtN ) were identified in strains by in silico genome analyses. Later, the number of single nucleotide polymorphisms...

Piscirickettsia salmonis is the causative bacterial pathogen of piscirickettsiosis, a salmonid disease that causes notable mortalities in the worldwide aquaculture industry. Published research describes the phenotypic traits, virulence factors, pathogenicity and antibiotic‐resistance potential for various P. salmonis strains. However, evolutionary and genetic information is scarce for P. salmonis . The present study used multi...