Acronym NA
Category
Aquaculture
Title "Kortere generasjonsintervall hos laks - Shorter generation intervals in salmon" 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 Bjarne Gjerde Coordinator email bjarne.gjerde@nofima.no
Coordinator institution
NOFIMA - Norwegian Institute of Food, Fisheries and Aquaculture Research (Norway)
Institutions involved
NA
Start year 2007 End year 2015 Funding (€) € 208,220 Website https://prosjektbanken.forskningsradet.no/en/project/FORISS/180098?Kilde=EU&distribution=Ar&chart=bar&calcType=projects&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=0&Prosjektleder=UNIVERSITY+OF+ESSEX%2C+UNIVERZA+V+LJUBLJANI%2C+GOETEBORGS+UNIVERSITET%2C+UNIVERSITAT+WIEN%2C+FONDATION+SUISSE+POUR+LA+RECHERCHE+EN+SCIENCES+SOCIALES%2C+GESIS-LEIBNIZ-INSTITUT+FUR+SOZIALWISSENSCHAFTEN+EV%2C+TAMPER Summary If the generation interval can be reduced from four to three years genetic gain per year can be increased by 33 % given else similar conditions. In Atlantic salmon this can be obtained through the production families that are put into the sea as 0+ autumn smolt instead of 1+ spring smolt. Genetic parameters were obtained for growth and sexual maturity (either or trait) based on traits records on fish from the same families from each of three different year-classes (2006, 2009 and 2010) that were put into the sea as 0+ autumn smolt and 1+ spring smolts. The trait records were obtained after one winter in the sea for two of the 1+ year-classes (2006 and 2009) and after two winters in the sea for all three 0+ year-classes. For the 1+ fish percent early sexual mature fish was 11.9 % (2006) and 7.6 % (2009), and for the 0+ fish 27.0 % (2006), 60.2 % (2009) and 33.1 % (2010). The genetic variation for sexual maturity was substantial for the 0+ fish, but much lower for the 1+ fish, while the genetic correlation between these traits was close to zero in both year-classes (0.21±0.18; -0.02±0.10). The genetic variation for body weight was substantial for both the 0+ and the 1+ fish, and with a high genetic correlation between these traits in both year-classes (0.78±0.07; 0.76±0.05). It is concluded that if generation interval is reduced to three years and early sexual maturity is an important trait for fish put into the sea as 1+ smolt, the breeding nucleus families should also be tested as 1+ smolt.
Goal:
To investigate if the generation interval in Atlantic salmon can be reduced from four to three years.
Keywords
Fish;
Salmon;
Fish reproduction;
Genetic;
Growth rate;
Marine Region
41
Norwegian Sea (27.IIa)
1
Marine Region Map
