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Genetic Mapping and QTL Analysis of Growth Traits in the Large Yellow Croaker Larimichthys crocea |
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| Authors: | Hua Ye Yang Liu Xiande Liu Xiaoqing Wang Zhiyong Wang |
| Institution: | 1. Key Laboratory of Healthy Mariculture for East China Sea, Ministry of Agriculture of the People’s Republic of China, Jimei University, Xiamen, 361021, China 2. Fisheries Breeding and Healthy Cultivation Research Centre, Southwest University, Chongqing, 402460, China 3. College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China |
| Abstract: | Large yellow croaker (Larimichthys crocea) is an important maricultured species in China. A genetic linkage map of the large yellow croaker was constructed using type II microsatellites and expressed sequence tag (EST)-derived microsatellites in two half-sib families (two females and one male). A total of 289 microsatellite markers (contained 93 EST-SSRs) were integrated into 24 linkage groups, which agreed with the haploid chromosome number. The map spanned a length of 1,430.8 cm with an average interval of 5.4 cm, covering 83.9 % of the estimated genome size (1,704.8 cm). A total of seven quantitative trait locis (QTLs) were detected for growth traits on five linkage groups, including two 1 % and five 5 % chromosome-wide significant QTLs, and explained from 2.33 to 5.31 % of the trait variation. The identified QTLs can be applied in marker-assisted selection programs to improve the growth traits. |
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