Dynamic genetic analysis for body weight and main length ratio in turbot <i>Scophthalmus maximus</i>

Xin’an Wang; Aijun Ma

doi:10.1007/s13131-020-1551-y

Volume 39 Issue 2

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Xin’an Wang, Aijun Ma. Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus[J]. Acta Oceanologica Sinica, 2020, 39(2): 22-27. doi: 10.1007/s13131-020-1551-y

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Xin’an Wang, Aijun Ma. Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus[J]. Acta Oceanologica Sinica, 2020, 39(2): 22-27. doi: 10.1007/s13131-020-1551-y

Xin’an Wang, Aijun Ma. Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus[J]. Acta Oceanologica Sinica, 2020, 39(2): 22-27. doi: 10.1007/s13131-020-1551-y

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Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus

doi: 10.1007/s13131-020-1551-y

Xin’an Wang^{1, 2},
Aijun Ma^{1, 2
,
,}

1.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Shandong Province Key Laboratory of Marines Fisheries Biotechnology and Genetic Breeding, Qingdao 266071, China
2.
Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

Funds: The Earmarked Fund for Modern Agro-Industry Technology Research System under contract No. CARS-47-G01; the AoShan Talents Cultivation Program supported by Qingdao National Laboratory for Marine Science and Technology under contract No. 2017ASTCP-OS04; the Agricultural Fine Breed Project of Shandong under contract No. 2016LZGC031; the Chinese Academy of Fishery Sciences Basal Research Fund under contract No. 2016HY-JC0302; the National Key Research and Development Program under contract No. 2018YFD0900102.

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Corresponding author: E-mail: maaj@ysfri.ac.cn
Received Date: 2018-05-21
Accepted Date: 2019-02-28

Available Online: 2020-04-21

Publish Date: 2020-02-25

Abstract

Abstract

The objective of this study was to estimate genetic parameters of body width (BW) to body length (BL) ratio (BW/BL) and of body weight traits (BWT) in turbot, and to elucidate the genetic mechanism of the two traits during ontogeny by dynamic genetic analysis. From 3 to 27 months, BW, BL and BWT of each communally stocked fish were measured every 3 months. The BW/BL ratio was measured at different sampling ages. A two-trait animal model was used for genetic evaluation of traits. The results showed that the heritability values of BW/BL ratio ranged from 0.216 8 to 0.314 8, corresponding to moderate heritability. The BWT heritability values ranged from 0.270 2 to 0.347 9 corresponding to moderate heritability. The heritability of BW/BL ratio was lower than that of BWT, except at 3 months of age. Genetic correlation between BW/BL ratio and BWT decreased throughout the measurement period. Genetic correlations were higher than the phenotypic correlations. The current results for estimating genetic parameters demonstrate that the BW/BL ratio could be used as a phenotypic marker of fast-growing turbot, and the BW/BL ratio and BWT could be improved simultaneously through selective breeding.
- turbot,
- dynamic genetic analysis,
- body weight,
- main length ratio,
- heritability,
- genetic correlation

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References

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