Inbreeding evaluation using microsatellite and its effect on growth traits in turbot, Scophthalmus maximus

文献类型: 外文期刊

第一作者: Lyu, Ding

作者: Lyu, Ding;Wu, Huanhuan;Hu, Yulong;Wang, Weiji;Lyu, Ding;Wu, Huanhuan;Hu, Yulong;Wang, Weiji

作者机构:

关键词: growth traits;inbreeding;inbreeding depression;microsatellite;turbot

期刊名称:AQUACULTURE RESEARCH ( 影响因子:2.082; 五年影响因子:2.415 )

ISSN: 1355-557X

年卷期: 2018 年 49 卷 3 期

页码:

收录情况: SCI

摘要: Turbot is an economically relevant fish, and simultaneously at the risk of inbreeding depression in China. Microsatellite DNA markers were used to evaluate inbreeding level of a random turbot breeding population and further investigate its effects on growth traits. DNA based inbreeding coefficients (F-DNA) were ranged from 0 to 0.4124. Average inbreeding coefficient was 0.0621 with a standard deviation of 0.0658. Regression analysis results showed inbreeding had a very significant (p<.01) effect on harvest body weight (BW) and significant (p<.05) effect on harvest body long (BL). Inbreeding depression, expressed as the percent change in phenotype per 10% increase in F, was -4.00% for BW and -1.14% for BL. The inbreeding depression on high inbreeding coefficient (more than 10%) individuals was further analyzed. A set of significant (p<.05) and larger inbreeding depression was obtained, -7.15% and -2.49% for BW and BL respectively. This study demonstrates that inbreeding has a negative effect on growth traits and highlights the need of DNA markers to control inbreeding and maximize the genetic diversity in selection breeding programs.

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