Inbreeding evaluation using microsatellite and its effect on growth traits in turbot, Scophthalmus maximus
文献类型: 外文期刊
作者: Lyu, Ding 1 ; Wu, Huanhuan 1 ; Hu, Yulong 1 ; Wang, Weiji 1 ;
作者机构: 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Utilizat Marine Fisheries Res, Minist Agr, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China
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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