Acronym PARVILIFE
Category
Aquaculture
Title Parvicapsula pseudobranchicola: life cycle and genetic variation 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 Haakon Hansen Coordinator email haakon.hansen@vetinst.no
Coordinator institution
NVI - Norwegian Veterinary Institute (Norway)
Institutions involved
NA
Start year 2011 End year 2015 Funding (€) € NA Website https://prosjektbanken.forskningsradet.no/en/project/FORISS/207269?Kilde=FORISS&distribution=Ar&chart=bar&calcType=funding&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=150&ProgAkt.3=HAVBRUKS-Havbruk%20-%20en%20n%C3%A6ring%20i%20vekst Summary The myxozoan parasite Parvicapsula pseudobranchicola were first reported from seawater reared Atlantic salmon in Norway in 2002 as the cause of severe disease and economical losses and has since then been an increasing problem in the Norwegian aquaculture industry. Individual farms experience economical losses in the range of 10 million NOK annually. Myxozoans have complex life cycles usually involving an intermediate fish host and an annelid main host. More than 2200 myxozoan species have been described, however, less than 30 life cycles are known. From the marine environment 4 myxozoan life cycle have been described, all use polychaetes as main host. To reduce infection pressure by myxozoans in farmed fish, knowledge about the life cycle is essential. We will therefore try to identify the main host of P. pseudobranchicola to enable laboratory experiments to study factors that will influence the life cycle of the parasite such as: (1) Host preference, suitability of different species of fish; (2) Temperature effect on the release of infective spores; (3) Susceptibility of different host strains and age-groups; (4) Spores release in relation to seasonality; (5) Spore viability, e.g. longevity in seawater. Furthermore, most cases of parvicapsulosis are from the northern parts of Norway even though the parasite have been found as far south as the Oslofjord. The reason for the observed increase in the number of cases of parvicapsulosis in northern parts of Norway, compared to other regions with high densities of fish farms in Norway, may be due to strain variations in P. pseudobranchicola. New molecular markers to study the genetic variation in P. pseudobranchicola will therefore be developed.
Goals:
(1) Identify the oligochatee/polychate host(s) of Parvicapsula pseudobranchicola (Pp); (2) Describe the life cycle of Pp; (3) Develop new high resolution markers; (4) Study the genetic variation in Pp.
Keywords
Disease;
Genetic;
Genomic sequencing;
Parasite;
Salmon;
Cage aquaculture;
Fish;
Open sea aquaculture;
Marine Region
41
Norwegian Sea (27.IIa)
1
Marine Region Map
