An 8-Year Breeding Program for Asian Seabass Lates calcarifer: Genetic Evaluation, Experiences, and Challenges.

摘要: Selective breeding for marine finfish is challenging due to difficulties in reproduction, larval rearing and on-growth captive environments. The farming of Asian seabass (Lates calcarifer) has all these problems our knowledge the quantitative genetic information (heritability correlations) traits necessary commercial exploitation poor. present study was conducted address this gap provide that can be applied sea bass other aquaculture species. We carried out a comprehensive evaluation three (body weight, total length survival) collected from population over an eight-year period 2010 2017. Statistical analysis on 4567 adult fish at 105, 180, 270, 360, 450 570 days post-hatch (dph). heritabilities (h2) estimated body weight using linear mixed model were moderate high (0.12 0.78 0.41 0.85, respectively) they differed between measurement periods. Survival during grow-out phase analysed threshold logistic probit models. heritability estimates survival rate underlying liability scale ( ) varied 0.05 0.21. When back-transformed observed (0/1), similar but not significant. In addition, we examined effects genotype by environment (G×E) interaction traits. correlation tank cage cultures (0.91-0.94) first second periods (180 270dph) decreased 0.59±0.33 360dph. This suggests important population. Furthermore, correlations weights different positive. measured time points may selection improved early capture expressions subsequent seabass. Selection nucleus cages produce genotypes do perform equally well tanks, although deserves further studies determine suitable optimise program.;