Premium
Heritability for growth traits in giant freshwater prawn, Macrobrachium rosenbergii (de Mann 1879) based on best linear unbiased prediction methodology
Author(s) -
Kitcharoen Nissara,
Rungsin Wikrom,
Koonawootrittriron Skorn,
NaNakorn Uthairat
Publication year - 2012
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2011.02796.x
Subject(s) - macrobrachium rosenbergii , heritability , prawn , biology , restricted maximum likelihood , zoology , carapace , statistics , mixed model , sex ratio , best linear unbiased prediction , genetic correlation , variance components , veterinary medicine , maximum likelihood , demography , fishery , mathematics , genetic variation , selection (genetic algorithm) , genetics , population , medicine , crustacean , artificial intelligence , sociology , computer science , gene
In this study, heritability was estimated for growth‐related traits of giant freshwater prawn ( Macrobrachium rosenbergii ) before and after morphological sexual differentiation. Estimation was made on data from 16 full‐sib and eight half‐sib families. The variance estimation was performed using a univariate mixed linear animal model and variance components were analysed following an animal model using restricted maximum likelihood procedure using average information algorithm. Heritability estimates ( h 2 ) varied considerably with ages. At 2 months old, h 2 for carapace length (CL; 0.35±0.15) and body weight (BW; 0.26±0.13) were higher than those estimated at 5 months old, based on mixed sex data. However, when data were sorted by sex, h 2 calculated from data of females were higher than those of males for CL (0.26±0.16 vs. 0.10±0.06), BW (0.28±0.17 vs. 0.12±0.08), body length (0.40±0.17 vs. 0.11±0.07), total length (0.47±0.18 vs. 0.11±0.07) and claw length (0.29±0.16 vs. 0.03±0.04). The same trend was observed for traits at 6 months old in both bulk and individual rearing.