Acronym NA
Category
Aquaculture
Title Smittetesting for virus i laksefamilier (fase 2): IPN-virus - Infection testing for virus in salmon families (Phase 2): IPN virus Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Espen Rimstad Coordinator email espen.rimstad@veths.no
Coordinator institution
NMBU - Norwegian University of Life Sciences (Norway)
Institutions involved
NVI - Norwegian Veterinary Institute (Norway) ,
NA - PatoGen Analyze AS (Norway) ,
Start year 2008 End year 2009 Funding (€) € NA Website https://www.fhf.no/prosjekter/prosjektbasen/900132/ Summary This is a follow-up project of the project “ Infection testing for ISA in salmon families” which was a collaborative project between SalmoBreed, PatoGen Analysis, the Veterinary Institute and the Norwegian Veterinary College.
The previous project was considered successful, although the results (no difference between the families in the amount of virus) were not as the working hypotheses assumed in advance. There was as much virus in fish from families with high as with low survival. There was therefore also no basis for recommending quantitative detections of viruses as an additional study to current infection tests. These were also interesting results in understanding the pathogenesis of the disease.
Based on such studies, infectious salmon anemia (ISA) viruses cannot be generalized to other viral infections in fish. For example, infectious pancreatic necrosis virus (IPN) virus is different in structure, replication cycle and target cells and stimulates both congenital and acquired response by mechanisms other than ISA virus. There may be a correlation between families' average survival and virus level in surviving fish for IPN virus even though no ISA virus was found. In that case, quantification of the virus could be an interesting additional criterion to use in breeding selection for resistance to IPN.
IPN has been chosen because resistance is used as a selection criterion in salmon families, and there are gradually relatively good reproducible infection models. As of today, this is not to the same extent the case for Pancreatic disease (PD), which could also be an interesting object in this context.
The IPN virus attacks the pancreas and destroys the cells that produce digestive enzymes. Outbreaks of IPN are common in fry during initial feeding and in smolts just after release into the sea. Many of the infected fish become long-term carriers of the virus, some for the rest of their lives.
Goals:
• To perform an IPN virus infection test to grade different families in terms of survival.
• Examine samples taken from families where many fish have survived and from families where an average number of fish have survived and examine virus levels in these families.
Keywords
Salmon;
Fish;
Disease;
Marine Region
76
Not associated to marine areas
0
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