Estimates of heritability and genetic correlations for growth-related traits in the tiger prawn Penaeus monodon

摘要

Heritabilities and genetic and phenotypic correlations were estimated for body weight (BW), body length (BL), carapace length (CL), carapace width (CW) and carapace height (CH) of the Penaeus monodon from measurements on progeny at 6months of age resulting from a nested mating design. Estimation was made on data from 41 full-sib and 10 half-sib families. The estimated heritabilities for these traits were 0.13-0.24, and the significantly phenotypic and genetic correlations were 0.81-0.94 and 0.88-1.00, respectively. The present results indicate that genetic improvement through selective breeding conducted on P.monodon might be feasible and would be an efficient method to obtain a positive response to selection.