Comparison was made of 13 strains of Arctic charr (Salvelinus alpinus) from lakes and rivers in Iceland. The first part of the experiment involved the period from hatching to individual tagging at approximately one year of age and was carried out at two hatching stations. The second part involved rearing of charr for 18 months under eight different environmental conditions at commercial fish farms. The results showed substantial variation between strains in growth rate, final body weight and time of sexual maturation. Genotype-environment interaction was significant but low in magnitude. Variation due to strains and strain-environment interaction accounted for 27 and 6 percent, respectively, of the random variation in final body weight after adjustment for effects of fish farm and hatching station. The study confirmed that careful selection of strains for rearing is important for successful aquaculture of Arctic charr.

E. Erythorsdottir, T. Petursdottir, E. Svavarsson

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 19. Selection and quantitative genetics; growth; reproduction; lactation; fish; fiber; meat., , 387–390, 1994
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