Genetic parameters and genotype by environment interaction for harvest traits of Malabar red snapper (Lutjanus malabaricus)

Aquaculture, Journal Year: 2025, Volume and Issue: unknown, P. 742247 - 742247

Published: Jan. 1, 2025

Language: Английский

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Genomic Evaluation of Harvest Weight Uniformity in Penaeus vannamei Under a 3FAM Design Incorporating Indirect Genetic Effect

Biology, Journal Year: 2025, Volume and Issue: 14(4), P. 328 - 328

Published: March 24, 2025

Harvest weight uniformity is a critical economic trait in the production of Pacific white shrimp (Penaeus vannamei). Social interactions among individuals can significantly influence both and productivity aquaculture. To improve harvest through selective breeding, it essential to accurately partition genetic component social effects, known as an indirect effect (IGE), from purely environmental factors. Since IGEs cannot be estimated when all are kept single group, specialized experimental design, such grouping design with three families per group (3FAM), required. With this population divided into multiple groups (cages), each containing families. Individuals family then evenly subdivided placed cages, thereby enabling estimation direct effects. Additionally, integrating genomic information instead relying solely on pedigree data improves accuracy relatedness individuals, leading more precise evaluation. This study employed 3FAM involving 40 (36 family) estimate contribution effects uniformity. The genotypes tested obtained using 55K SNP panel were incorporated hierarchical generalized linear model predict (IGE) separately. results revealed that heritability was low (0.005 0.017). However, coefficient variation (0.340 0.528) indicates residual variance selection criterion for improving feasible. Incorporating IGE increased estimates by 150% 240% 32.11% 55.29%, compared without IGE. Moreover, correlation between its shifted strongly negative value (−0.862 −0.683) weakly positive (0.203 0.117), suggesting improvement relationship traits better separation inclusion enhanced prediction ability single-step best unbiased 6.35% 10.53%, respectively, pedigree-based prediction. These findings highlight importance incorporating utilizing methods enhance obtaining approach provides theoretical foundation guiding improvements breeding programs offers potential applications other food systems.

Language: Английский

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Multi-Trait Genomic Prediction of Meat Yield in Pacific Whiteleg Shrimp (Penaeus vannamei)

Animals, Journal Year: 2025, Volume and Issue: 15(8), P. 1165 - 1165

Published: April 18, 2025

The meat yield (MY) is a key economic trait in Pacific whiteleg shrimp (Penaeus vannamei) breeding, necessitating accurate genomic prediction for efficient genetic improvement. In this study, we investigated single-trait (STGMs) and multi-trait models (MTGMs) predicting MY related traits, using two cross-validation strategies reflecting different data-availability scenarios. A total of 899 individuals from 63 full-sibling families were phenotyped MY, net weight (MW), body (BW), length (BL), abdominal segment (AL). We estimated the heritability correlations traits P. vannamei, followed by comparing accuracy STGMs MTGMs MW. Two validation approaches then applied: CV1 retained auxiliary sets, CV2 excluded both target traits. Heritability estimates indicated that had low (STGM: 0.160; MTGMs: 0.145–0.156), whereas MW, BW, BL, AL showed low-to-moderate (0.099–0.204). Genetic revealed strong associations between MW/BW/BL (rg = 0.605–0.783), yet positive correlation with 0.286). Across all comparisons, consistently surpassed STGMs. For improved 4.8–58.8% relative to STGM (0.187), MY-MW model achieving highest (0.297) under CV1. Similarly, enhanced MW 36.6–138.2% over (0.254), MW-BW reaching (0.605) Notably, retaining (CV1) boosted gains substantially (up 138.2%), excluding them (CV2) yielded only marginal improvements (≤8.6%). Moreover, incorporating as an increased BL 5.4–7.6%, indicating its synergistic value MTGMs. Overall, these results demonstrate markedly enhance carcass compared STGMs, particularly when data are accessible (CV1). findings underscore importance maintaining records breeding populations, offering robust framework improving vannamei through models.

Language: Английский

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Genome-wide association study and genomic prediction of resistance to summer mortality in Pacific oyster (Crassostrea gigas) using whole genome resequencing

Aquaculture, Journal Year: 2024, Volume and Issue: 590, P. 741023 - 741023

Published: April 30, 2024

Language: Английский

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Advances in biotechnology and breeding innovations in China’s marine aquaculture

Advanced Biotechnology, Journal Year: 2024, Volume and Issue: 2(4)

Published: Oct. 18, 2024

Biotechnology is the key driving force behind sustainable development of aquaculture, as biological innovation would significantly improve capabilities aquatic breeding and achieve independent controllable seeding sources to ensure food safety. In this article, we have analyzed current status existing problems marine aquaculture in China. Based on these data, summarized recent (especially last 10 years) biotechnological progress China, including whole genome sequencing, sex-related marker screening, genomic selection, editing, well improved fish varieties Finally, perspectives field been discussed, three future countermeasures proposed.

Language: Английский

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