Infectious hematopoietic necrosis virus: Monophyletic origin of European isolates from North American Genogroup M
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Abstract
Infectious hematopoietic necrosis virus (IHNV) was first detected in Europe in 1987 in France and Italy, and later, in 1992, in Germany. The source of the virus and the route of introduction are unknown. The present study investigates the molecular epidemiology of IHNV outbreaks in Germany since its first introduction. The complete nucleotide sequences of the glycoprotein (G) and non-virion (NV) genes from 9 IHNV isolates from Germany have been determined, and this has allowed the identification of characteristic differences between these isolates. Phylogenetic analysis of partial G gene sequences (mid-G, 303 nucleotides) from North American IHNV isolates (Kurath et al. 2003) has revealed 3 major genogroups, designated U, M and L. Using this gene region with 2 different North American IHNV data sets, it was possible to group the European IHNV strains within the M genogroup, but not in any previously defined subgroup. Analysis of the full length G gene sequences indicated that an independent evolution of IHN viruses had occurred in Europe. IHN viruses in Europe seem to be of a monophyletic origin, again most closely related to North American isolates in the M genogroup. Analysis of the NV gene sequences also showed the European isolates to be monophyletic, but resolution of the 3 genogroups was poor with this gene region. As a result of comparative sequence analyses, several different genotypes have been identified circulating in Europe. ?? Inter-Research 2005.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Infectious hematopoietic necrosis virus: Monophyletic origin of European isolates from North American Genogroup M |
| Series title | Diseases of Aquatic Organisms |
| DOI | 10.3354/dao066187 |
| Volume | 66 |
| Issue | 3 |
| Year Published | 2005 |
| Language | English |
| Publisher | Inter-Research |
| Contributing office(s) | Western Fisheries Research Center |
| Description | 9 p. |
| First page | 187 |
| Last page | 195 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |