We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Genetic variation in susceptibility of Atlantic salmon, Salmo salar L., to furunculosis, BKD and cold water vibriosis.
- Authors
Gjedrem, T.; Gjøen, H. M.
- Abstract
Genetic variation in susceptibility of Atlantic salmon. Salmo salar L., to furunculosis, bacterial kidney disease (BKD) and cold water vibriosis was studied by challenge testing one-year-old fingerlings. Fish from 81 full-sib families within 32 sire progeny groups were infected with Aeromonas salmonicida, Renibacterium salmoninarum and Vibrio salmonicida. Estimated heritabilities were relatively low, being highest for BKD (h² = 0.23) and lowest for cold water vibriosis (h² = 0.13). Genetic correlations between the ability to survive the diseases were all positive, but the magnitude of the genetic correlation between furunculosis and BKD may be biased upwards because some of the dead BKD fish were also infected with furunculosis. The application of selection to develop resistant populations of Atlantic salmon is advocated. Challenge testing seems to be a feasible method, with relatively low costs and easy management. The future response to selection will depend on the relationships between results from a challenge test and mortalities under farming conditions and between disease resistance and other traits in the breeding goal.
- Subjects
GENETICS; ATLANTIC salmon; BACTERIAL kidney disease (Fish disease); BACTERIAL diseases in fishes; DISEASE susceptibility; FURUNCULOSIS
- Publication
Aquaculture Research, 1995, Vol 26, Issue 2, p129
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/j.1365-2109.1995.tb00892.x