Evolution of infectious hematopoietic necrosis virus (IHNV), a fish rhabdovirus, in Europe over 20 years: implications for control

PJ Enzmann, J Castric, G Bovo, R Thiery, D Fichtner, H Schütze, T Wahli
2010 Diseases of Aquatic Organisms  
The fish pathogenic rhabdovirus infectious hematopoietic necrosis virus (IHNV) causes substantial losses in European aquaculture. IHNV was first detected in Europe in 1987 and has since undergone considerable spread. Phylogenetic analyses of the full G-gene sequences of 73 isolates obtained from 4 countries in Europe (France, n = 18; Italy, 9; Switzerland, 4; Germany, 42) enable determination of the evolution of the virus in Europe since the first detection, and identification of characteristic
more » ... n of characteristic changes within the G-genes of European strains. Further, the database allows us to analyse the pathways of distribution in Europe over time. The results suggest that in most of the recent cases, spread of IHNV was related to trade of infected fish. The data further demonstrate that knowledge of the sequence is required to determine the source of infections in farms. KEY WORDS: IHNV evolution · Phylogenetic tree · Control Resale or republication not permitted without written consent of the publisher Editorial responsibility: Mark Crane,
doi:10.3354/dao02182 pmid:20391908 fatcat:7hlt6y2rejhvvaw4jitifttmka