期刊
JOURNAL OF FISH DISEASES
卷 45, 期 2, 页码 327-334出版社
WILEY
DOI: 10.1111/jfd.13558
关键词
genotype; IPNV; Turkey; virulence
资金
- Scientific and Technological Research Council of Turkey (TUBITAK) [213O156]
This study analyzed the VP2 gene of recent IPNV isolates from Turkey and found that they are closely related to strains from Denmark, Iran, and Spain, all belonging to genogroup V, serotype A2 (Sp strain). Low genetic diversity was observed among the Turkish IPNV isolates, and certain amino acid residues may be associated with virulence.
Infectious pancreatic necrosis (IPN) is a highly contagious disease of young salmonid fish and is one of the most severe economic diseases in aquaculture. In Turkey, an increase in infectious pancreatic necrosis virus (IPNV) outbreaks in freshwater rainbow trout have been reported in recent years. This study aimed to analyze the VP2 gene from recent IPNV isolates from Turkey to determine whether there are epidemiological links between IPNV isolates from rainbow trout (Oncorhynchus mykiss; 62) and sea bass (Dicentrarchus labrax; 1), wild turbot (Scophthalmus maximus; 1) and the environment in order to investigate potential wild and farmed fish interactions. In this study, 62 Turkish IPNV isolates collected over 10 years (2005-2014) from rainbow trout, sea bass and turbot were genotypically characterized. The phylogenetic analysis indicated that Turkish IPNV isolates are closely related to strains from Denmark, Iran and Spain and that all Turkish IPNV isolates belong to genogroup V, serotype A2 (Sp strain). Furthermore, low genetic diversity was found among the Turkish isolates (identity, 95.5%-100% nucleotides and 97.8%-100% amino acids). The result of the analysis of the amino acid residues found at positions 217, 221 and 247 (proline, threonine and alanine, respectively) could be associated with virulence.
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