Effects of morphological characters on body weight of Penaeus monodon
In order to study the correlation between phenotypic traits and body weight, five quantitative traits in-cluding four morphological traits (body length, carapace length, carapace width, and carapace height) and body weight of 6-month-old Penaeus monodon were measured and analyzed from 1339 randomly collected individuals by correlation analysis, multiple regression analysis, path analysis and determination coefficient analysis. The re-sults showed that there were significant correlations (P <0.01) among the five measured traits. The body length (P=0.563) was the key effective factor, bearing predominant, direct effect and determinacy on the body weight. The trend of determination coefficient analysis was similar to that of path analysis. High total determination coefficient (Σd=0.925) between phenotypic features and body weight indicated that the selected traits were practically useful. The multiple regression equation for estimation of body weight was Y = –22.489+ 0.22X1 + 0.191X2 + 0.339X3 +0.296X4.
国家科技期刊平台
NSTL
万方数据
维普
