Based upon mixed linear model and incomplete diallel cross between different strains of Macrobrachium nipponense, the additive-genetic correlations of growth and morphometrics with meat yield traits in M. nipponense were estimated using the minimum norm quadratic unbiased estimation procedure. Path analysis method was utilized to investigate the overall additive-genetic determinations of growth and morphometric traits on the meat yield traits. Results indicated that growth and morphometrics were genetically positively correlated with abdominal meat weight (p < 0.01), but were not genetically correlated with abdominal meat percentage (p > 0.05) in both sexes. Growth and morphometrics were genetically positively correlated (p < 0.01). Abdominal meat weight was genetically positively correlated with abdominal meat percentage (p < 0.01). In terms of the overall additive-genetic determination, body weight had the greatest impact on abdominal meat weight in both sexes. In contrast, abdominal meat weight, abdominal length, and body weight were most influential on abdominal meat percentage in both sexes. The genetic relationships of growth and morphometrics to meat yield traits were elucidated in M. nipponense for the first time, contributing to formulation of sound improvement plan for the meat yield traits in this commercially important prawn species.

中文翻译：

---

日本沼虾生长和形态测量与产肉性状的加性遗传关系（De Haan，1849）

基于混合线性模型和日本沼虾不同品系之间的不完全双列杂交，使用最小范数二次无偏估计程序估计了日本沼虾生长和形态测量与产肉性状的加性遗传相关性。采用通径分析方法研究了生长和形态性状对产肉性状的整体加性遗传决定。结果表明， 无论性别，生长和形态测量与腹肉重量均呈遗传正相关（p  < 0.01），但与腹肉百分比不具有遗传相关性（p > 0.05）。生长和形态测量在遗传上呈正相关（p  < 0.01）。腹肉重量与腹肉百分比呈遗传正相关（p  <0.01）。就总体加性遗传决定而言，体重对两性腹肉重量的影响最大。相比之下，腹肉重量、腹长和体重对男女腹肉百分比影响最大。首次阐明了日本对虾生长和形态测量与产肉性状的遗传关系，有助于为这一重要商业虾种的产肉性状制定完善的改良计划。