Genotype by Environment Interaction for Growth in Atlantic Cod (Gadus morhua L.) in Four Farms of Norway

Journal of Marine Science and Engineering

Rama Bangera³  Tale M. K. Drangsholt³  Hanne Marie Nielsen²  Panya Sae-Lim²  Jørgen �gård¹  Velmurugu Puvanendran³  Øyvind J. Hansen³  Atle Mortensen³ 

[1] Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, P.O. Box 5003, Ås NO-1432, Norway; E-Mail:;Nofima, P.O. Box 5010, Ås NO-1432, Norway; E-Mails:;Nofima, P.O. Box 6122, Tromsø NO-9291, Norway; E-Mails:

关键词: Atlantic cod;    genotype by environment interaction;    heterogeneity of variances;    heritability;    genetic correlation;   

DOI  :  10.3390/jmse3020412

来源: mdpi

【 摘 要 】

We studied genotype by environment interaction (G × E) for body weight (BW) of Atlantic cod (Gadus morhua L.) from the National cod breeding program in Norway. Records of 13,811 fish in a nucleus farm (NUC) and two test farms (PE_North, PE_South) in year-class (YC) 2007, and for 9149 fish in NUC and one test farm in YC 2010 were available. Heterogeneity of variances and heritabilities ( between NUC and test farms were relatively high for both models (0.81 ± 0.19 to 0.96 ± 0.17) and (0.81 ± 0.08 to 0.86 ± 0.04), suggesting low re-ranking of genotypes. Strong re-ranking of genotypes between PE_South and PE_North may be less important because most cod producers are situated close to the breeding nucleus. In conclusion, G × E between NUC and test farms were low and at present there is no need for separate breeding programs for BW in cod.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.