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Genetic analysis of early growth traits of the triangle shell mussel, Hyriopsis Cumingii, as an insight for potential genetic improvement to pearl quality and yield |
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| Authors: | Wu Jin Zhiyi Bai Longlong Fu Genfang Zhang Jiale Li |
| Institution: | 1. Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, 999 HuchengHuan Road, Shanghai, 201306, China 2. Bioengineering School, Jinhua College of Vocation and Technology, Jinhua, 32100, Zhejiang Province, China 3. College of Fisheries and Life Science of Shanghai Ocean University, Shanghai, 201306, China |
| Abstract: | Individual Hyriopsis cumingii were collected from Poyang Lake, Dongting Lake, and Taihu Lake, China, from which 17 paternal half-sib families, including 51 full-sib families, were produced using a nested design. After the cage culture of each family with ten replicates for 57?days, 30 individuals were randomly selected from each cage, totaling 15,300. Four growth traits were measured for genetic analysis in each mussel: shell length, shell height, shell thickness, and body weight. The heritability of each trait was 0.49?±?0.37, 0.27?±?0.29, 0.59?±?0.39, and 0.47?±?0.38, respectively. Phenotypic and genetic correlation between these four traits fell within the range of 0.89–0.95 and 0.97–1.00, respectively. Early growth traits of H. cumingii show sufficient genetic diversity for genetic improvement. Both phenotypic and genetic correlation between the four traits are high, and thus, the modification on one target trait may modify the remaining three traits accordingly. |
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