Family establishment and estimation of genetic parameters of growth traits of “Laizhou red” strain in Manila clam Ruditapes philippinarum
LIANG Teng, LI Jinlong, MA Bin, CHE Zonghao, WANG Haisheng, LUO Xinghong, JIN Yan, ZHAO Xia, DING Jianfeng, HUO Zhongming, TENG Jun, MAO Dongliang, ZHAI Jieming, YAN Xiwu
1.College of Fisheries and Life Science, Engineering Research Center of Shellfish Culture and Breeding in Liaoning Province,Dalian Ocean University, Dalian 116023, China; 2.Laizhou Mingbo Aquatic Products Company Limited, Yantai 261442, China; 3.Laizhou Bay Ocean Technology Company Limited, Yantai 261442, China
Abstract: In order to produce a strain of “Laizhou red” of Manila clam Ruditapesphilippinarum(referred to as clams), 11 patrilineal semi-sib and 33 matrilineal full-sib families were established in wild individuals of “Laizhou red” strain of Manila clam using the nest design.The results showed that each family had the average absolute growth shell length of(6.32±0.67)μm/d and shell height of(6.69±0.80)μm/d in the larval stage, with the obvious growth advantages in E1 and I2 families.The average absolute growth was found to be(61.77±38.42)μm/d in shell length and(61.03±31.07)μm/d in shell height in each family at the juvenile stage, and the G3, F1, F2, B2 and B1 families had obvious growth advantages.During the cultured period of indoor, each family juvenile shells had the average absolute shell length growth of(123.93±48.05)μm/d and absolute shell height growth of(86.17±36.71)μm/d, with the obvious growth advantages in G3 families.In the outdoor culture period, the average shell length and shell height absolute growth of the family were(54.27±38.61)μm/d, and(38.69±18.49)μm/d, and I3, G3, K3, J1 and H2 families had obvious growth advantages.The heritability of shell length and shell height of 100 days “Laizhou red” clam were(0.35±0.09)and(0.34±0.10), respectively, and the genetic correlation and phenotypic correlation were(0.983 3±0.009 5)and(0.990 4±0.012 2), respectively.The heritability of shell length and shell height of the 200 days “Laizhou red” strain were(0.19±0.10)and(0.18±0.11), respectively, and the genetic correlation and phenotypic correlation were(0.930 2±0.005 4)and(0.924 9±0.008 1), respectively.The “Laizhou red” strain had moderate heritability for the growth traits.The findings indicate that the growth traits of “Laizhou red” clam have moderate heritability and great potential for breeding, especially, G3 family is featured by fast growth and can be used as core breeding families.
梁腾, 李金龙, 马斌, 车宗豪, 王海生, 罗星红, 金燕, 赵侠, 丁鉴锋, 霍忠明, 滕军, 毛东亮, 翟介明, 闫喜武. “莱州红”菲律宾蛤仔家系建立及生长性状遗传参数估计[J]. 大连海洋大学学报, 2022, 37(2): 258-267.
LIANG Teng, LI Jinlong, MA Bin, CHE Zonghao, WANG Haisheng, LUO Xinghong, JIN Yan, ZHAO Xia, DING Jianfeng, HUO Zhongming, TENG Jun, MAO Dongliang, ZHAI Jieming, YAN Xiwu. Family establishment and estimation of genetic parameters of growth traits of “Laizhou red” strain in Manila clam Ruditapes philippinarum. Journal of Dalian Ocean University, 2022, 37(2): 258-267.
2022, Vol. 37 
