Quantitative genetic parameter estimates for body and carcass traits in a cultured stock of giant freshwater prawn (Macrobrachium rosenbergii) selected for harvest weight in Vietnam

Untitled

“…Similarly, Pérez-Rostro et al (2003b) reported high genetic correlations between growth-related traits (ranging from 0.44 to 0.98) compared with those reported previously for P. vannamei, but the phenotypic correlation was higher than the genetic correlation, which differs from our findings, the proper reason was environment effects covered up genetic correlation in our study. A high positive phenotypic and genetic correlation for growth-related traits has been observed for other shrimp species, such as M. rosenbergii (Hung et al 2014;Kitcharoen et al 2012;Hung et al 2013), as well as different fish species (McKay et al 1986;Myers et al 2001;Silverstein & Hershberger 1994). These outcomes indicate a high genetic correlation of growth-related traits of P. vannamei, which is likely controlled by the most same set of genes.…”

“…(2003a) estimate the heritability of BL and ASL were 0.15±0.16 and 0.20±0.17 at 17-week-old shrimps and 0.27±0.16 and 0.32±0.18 at 32-week-old shrimps. Hung et al (2013) estimated the heritability for CL and AL to be 0.06±0.01 and 0.07±0.04 at 10 weeks of age and 0.20±0.08 and 0.11±0.07 at 18 weeks of age, respectively. There are both different plots and similar plots for the heritability of this traits in present study.…”

“…Several recent studies have estimated the heritability and genetic correlation for body weight and other growthrelated traits in prawns. P. vannamei (Pérez-Rostro & Ibarra 2003a, b), and giant freshwater prawns Macrobrachium rosenbergii (Kitcharoen et al 2011;Hung et al 2013) showed very high genetic correlations among growth-related traits. The genetic correlation between growth-related traits and resistance traits is an important parameter for designing selective breeding programs and has been studied in many aquatic animals.…”

“…Gitterle et al (2005) reported that the effect common to fullsibs for body weight ranged from 0.00±0.05 to 0.17±0.08 for different batches; if the effect common to full-sibs was large, the heritability was typically small in P. vannamei under standard commercial conditions. For other aquatic animals, Hung et al (2013) reported that the effect common to full-sibs other than additive genetics for the same with body traits examined in our study ranged from 0.04 to 0.06 based on a four-analysis model of giant freshwater prawns (GFPs, Macrobrachium rosenbergii); based on the body weight and body length of rainbow trout and Atlantic salmon, the reported effect common to full-sibs other than additive genetics accounted for approximately 5% of the total variation in the rearing period until tagging (Fjalested et al 1996). To improve the accuracy with which genetic parameters are assessed, it is important to design experiments to reduce the effect common to full-sibs other than additive genetics.…”

Adult male morphotype variation in giant freshwater prawn (Macrobrachium rosenbergii): Genomic and experimental analysis of factors affecting the male social dominance hierarchy

“…While a number of stock improvement programs have been initiated in recent times for GFP (Hung et al, 2012(Hung et al, , 2013a(Hung et al, , 2013bDinh and Nguyen, 2014), at present there is only limited genetic information available for this species. Some studies have utilised data from DNA markers to investigate wild population structure and phylogeographical patterns in this species (de Bruyn et al, 2004;de Bruyn and Mather, 2007;Hurwood et al, 2014), while others have sought to understand and to manipulate processes of sexual maturation and sex determination by inducing the first full and functional sex reversal of male GFP to neo-female phenotype (Ventura et al, 2011).…”