DAO 89:9-15 (2010)  -  DOI: https://doi.org/10.3354/dao02182

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

Peter-Joachim Enzmann1,*, Jeannette Castric2, Giuseppe Bovo3, Richard Thiery2,6, Dieter Fichtner4, Heike Schütze4, Thomas Wahli5

1Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Paul-Ehrlich-Str. 28, 72076 Tübingen, Germany
2Afssa-site de Ploufragan/Brest, Technopôle Brest-Iroise, BP 70, 29280 Plouzané, France
3Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro (PD), Italy
4Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Suedufer 10, 17493 Greifswald - Insel Riems, Germany
5National Fish Disease Laboratory, Centre for Fish and Wildlife Health, Institute of Animal Pathology, University of Bern, POB 8466, 3001 Bern, Switzerland
6Present address: Afssa-site de Sophia-Antipolis, BP 111, 06902 Sophia-Antipolis, France

ABSTRACT: 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 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


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Cite this article as: Enzmann PJ, Castric J, Bovo G, Thiery R, Fichtner D, Schütze H, Wahli T (2010) Evolution of infectious hematopoietic necrosis virus (IHNV), a fish rhabdovirus, in Europe over 20 years: implications for control. Dis Aquat Org 89:9-15. https://doi.org/10.3354/dao02182

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