First Report of Aeromonas veronii in Farmed Nile Tilapia in Brazil

First Report of Aeromonas veronii as an Emerging Bacterial Pathogen of Farmed Nile Tilapia (Oreochromis niloticus) in Brazil Sandie Bispo dos Santos, Miguel Fernandez Alarcon, Anelise Stella Ballaben, Ricardo Harakava, Renata Galetti, Mateus Cardoso Guimarães, Mariene Miyoko Natori, Leonardo Susumu Takahashi, Ricardo Ildefonso, Marco Rozas-Serri Abstract Brazil is one of the world’s leading producers of […]

Piscine Orthoreovirus-1 (PRV-1) Has Been Present in Chilean Salmon Aquaculture since at Least 1994

Piscine Orthoreovirus-1 (PRV-1) Has Been Present in Chilean Salmon Aquaculture since at Least 1994 Marco Rozas-Serri, Ricardo Ildefonso, Victoria Jaramillo, Estefanía Peñaloza, Camila Leiva, Soraya Barrientos, Darling Coñuecar, Lucerina Maldonado, Ariel Muñoz, Andrea Peña, Felipe Aranis, and Carolina Senn Abstract Heart and skeletal muscle inflammation (HSMI) caused by Piscine orthoreovirus (PRV) was first described in […]

Co-Infection by LF-89-like and EM-90-like Genogrupos of Piscirickettsia salmonis

Co-Infection by LF89-like and EM-90-like Genogroups of Piscirickettsia salmonis in Farmed Atlantic Salmon in Chile: Implications for Surveillance and Control of Piscirickettsiosis Marco Rozas-Serri, Andrea Peña, Ian Gardner, Estefanía Peñaloza, Lucerina Maldonado, Ariel Muñoz, Fernando O. Mardones, Catalina Rodríguez, Ricardo Ildefonso, Carolina Senn and Felipe Aranis Abstract Piscirickettsiosis (SRS), caused by Piscirickettsia salmonis, is the […]

Reference Intervals for Blood Biomarkers in Farmed Atlantic Salmon, Coho Salmon and Rainbow Trout in Chile: Promoting a Preventive Approach in Aquamedicine

Reference Intervals for Blood Biomarkers in Farmed Atlantic Salmon, Coho Salmon and Rainbow Trout in Chile: Promoting a Preventive Approach in Aquamedicine Marco Rozas-Serri, Rodolfo Correa, Romina Walker-Vergara, Darling Coñuecar, Soraya Barrientos, Camila Leiva, Ricardo Ildefonso, Carolina Senn and Andrea Peña Abstract The mission of veterinary clinical pathology is to support the diagnostic process by […]

Why Does Piscirickettsia salmonis Break the Immunological Paradigm in Farmed Salmon? Biological Context to Understand the Relative Control of Piscirickettsiosis

Why Does Piscirickettsia salmonis Break the Immunological Paradigm in Farmed Salmon? Biological Context to Understand the Relative Control of Piscirickettsiosis Marco Rozas-Serri Abstract Piscirickettsiosis (SRS) has been the most important infectious disease in Chilean salmon farming since the 1980s. It was one of the first to be described, and to date, it continues to be […]

Full recombinant flagellin B from Vibrio anguillarum (rFLA) and its recombinant D1 domain (rND1) promote a pro-inflammatory state and improve vaccination against P. salmonis in Atlantic salmon (S. salar)

Full recombinant flagellin B from Vibrio anguillarum (rFLA) and its recombinant D1 domain (rND1) promote a pro-inflammatory state and improve vaccination against P. salmonis in Atlantic salmon (S. salar) Roxana González-Stegmaier, Andrea Peña, Franz Villarroel-Espíndola, Patricia Aguila, Cristian Oliver, Desmond MacLeod-Carey, Marco Rozas-Serri, Ricardo Enriquez, Jaime Figueroa. Abstract Flagellin is the major component of the flagellum, […]

Cost-effectiveness of longitudinal surveillance for Piscirickettsia salmonis using qPCR in Atlantic salmon farms (Salmo salar) in Chile

Marina Delphino, Fernando Mardones, Joaquin Neumann, Alicia Gallardo, Daniel Jimenez, Andrea Peña, Marco Rozas-Serri, Ian Gardner Abstract Costs of diagnostic testing including sample collection, sampling frequency and sample size are an important consideration in the evaluation of the economic feasibility of alternative surveillance strategies for detection of infectious diseases in aquatic animals. In Chile, Piscirickettsia salmonis […]

Bayesian estimation of diagnostic sensitivity and specificity of a qPCR and a bacteriological culture method for Piscirickettsia salmonis in farmed Atlantic salmon (Salmo salar L.) in Chile

Emilie Laurin, Ian Gardner, Andrea Peña, Marco Rozas-Serri, Jorge Gayosa, Joaquin Neumann, Fernando Mardones Abstract Early detection of piscirickettsiosis is an important purpose of government- and industry-based surveillance for the disease in Atlantic salmon farms in Chile. Real-time qPCRs are currently used for surveillance because bacterial isolation is inadequately sensitive or rapid enough for routine use. […]

Atlantic Salmon Pre-smolt Survivors of Renibacterium salmoninarum Infection Show Inhibited Cell-Mediated Adaptive Immune Response and a Higher Risk of Death During the Late Stage of Infection at Lower Water Temperatures

Atlantic Salmon Pre-smolt Survivors of Renibacterium salmoninarum Infection Show Inhibited Cell-Mediated Adaptive Immune Response and a Higher Risk of Death During the Late Stage of Infection at Lower Water Temperatures Marco Rozas-Serri, Carlos Lobos, Rodolfo Correa, Ricardo Ildefonso, Jorge Vásquez, Ariel Muñoz, Lucerina Maldonado, Victoria Jaramillo, Darling Coñuecar, Camila Oyarzún, Romina Walker, Carolina Navarrete, Jorge Gayosa, Patricio Mancilla, […]

Gene expression associated with immune response in Atlantic salmon headkidney vaccinated with inactivated whole-cell bacterin of Piscirickettsia salmonis and pathogenic isolates

Marco Rozas-Serri, Andrea Peña, Lucerina Maldonado Abstract Piscirickettsiosis is the most challenging disease present in the Chilean salmon industry. The aim of this study was to describe the expression of genes associated with immune response of Atlantic salmon intraperitoneally infected with LF-89 and EM-90 Piscirickettsia salmonis and vaccinated with inactivated whole-cell bacterin of P. salmonis. […]