Abstract
Genetic parameters and response to selection were estimated for harvest body weight in turbot. The data consisted of 10 952 individuals of 508 full-sib families from three generations (G0, G1, and G2). The heritability estimates for G0, G1, and G2 were 0.11±0.08, 0.18±0.09, and 0.17±0.07, respectively. Over three generations, the heritability estimate was 0.19±0.04. Maternal and common environmental effects were 0.10±0.04, 0.14±0.04, and 0.13±0.03 within each generation and 0.12±0.01 across generations. The selection differential in growth was 18.24 g in G0 and 21.19 g in G1 corresponding to an average of 19.72 g per generation. The genetic gains were also calculated, they were 22.06 g in G1 and 11.93 g in G2, corresponding to 6.36% and 3.52% body weight. The total genetic gain after two generations was 10.10% body weight, which indicated that the selective breeding program for the body weight trait in turbot was successful.
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Foundation item: The Taishan Scholar Program for Seed Industry under contract No. ZR2014CQ001; the Accurate Identification and Selection Breeding Creative Utilization of Turbot Germplasm Resources under contract No. 2016LZGC031-2.
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Lyu, D., Wang, W., Luan, S. et al. Genetic parameters and response to selection for body weight in turbot (Scophthalmus maximus, Linnaeus). Acta Oceanol. Sin. 37, 47–51 (2018). https://doi.org/10.1007/s13131-018-1150-3
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DOI: https://doi.org/10.1007/s13131-018-1150-3