caa a22 4500 605464405 CHVBK 20210128100257.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10499-015-9894-7 doi (NATIONALLICENCE)springer-10.1007/s10499-015-9894-7 Genetic parameter estimates and genotype by environment interaction analyses for early growth traits in grass carp ( Ctenopharyngodon idella ) [Elektronische Daten] [Jianjun Fu, Yubang Shen, Xiaoyan Xu, Chengchu Liu, Jiale Li] Despite the importance of grass carp (Ctenopharyngodon idella) in aquaculture worldwide, selective breeding programs for growth traits remain limited. This study aimed to assess the genetic effects and extent of genotype by environment interactions (G×E) for early growth traits in grass carp. Fifty-eight full-sib grass carp families (n=1704; 20 dams and 15 sires), cultured in two ponds, were reconstructed using molecular parentage analysis. Based on the animal model and restricted maximum likelihood (REML) algorithm, the heritability of standard length (SL), body weight (BW), and condition factor (K) of grass carp at 40 dph (days post-hatch) were calculated as 0.304, 0.307, and 0.150, respectively (P<0.05). Significant genetic and phenotypic correlations were found between SL and BW, 0.838 and 0.958, respectively (P<0.01). The REML likelihood-ratio test between the maternal effects model and animal model showed maternal effects were not significant in early-stage grass carp (P>0.05). A significant interaction effect was found between family and environment (P<0.01), while Pearson's correlations for SL and BW of grass carp in different ponds were 0.773 and 0.630, respectively. Differential stabilities among families were responded to environments. These results indicate that the early growth traits of grass carp could be improved by exploiting additive genetic effects through selective breeding. Environmental effects and family stability should be taken into account in practical breeding programs. Springer International Publishing Switzerland, 2015 Ctenopharyngodon idella nationallicence Growth trait nationallicence Genetic parameter nationallicence Genotype by environment interaction nationallicence Aquaculture nationallicence Breeding program nationallicence Fu Jianjun Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut Shen Yubang Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut Xu Xiaoyan Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut Liu Chengchu Postdoctoral Research Station of Food Science and Technology, Shanghai Ocean University, 201306, Shanghai, China aut Li Jiale Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut Aquaculture International Springer International Publishing 23/6(2015-12-01), 1427-1441 0967-6120 23:6<1427 2015 23 10499 https://doi.org/10.1007/s10499-015-9894-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10499-015-9894-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fu Jianjun Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut NATIONALLICENCE 700 1- Shen Yubang Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut NATIONALLICENCE 700 1- Xu Xiaoyan Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut NATIONALLICENCE 700 1- Liu Chengchu Postdoctoral Research Station of Food Science and Technology, Shanghai Ocean University, 201306, Shanghai, China aut NATIONALLICENCE 700 1- Li Jiale Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 201306, Shanghai, China aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/6(2015-12-01), 1427-1441 0967-6120 23:6<1427 2015 23 10499