Effects of Morphometric Traits on Body Weight of Macrobrachium rosenbergii with Different Clamp Colors

Key words: 
• Macrobrachium rosenbergii /
• morphological traits /
• correlation coefficient /
• determination coefficient /
• path analysis

Abstract: The six-months-old Macrobrachium rosenbergii with different clamp colors and sex,i. e. male shrimps with dark blue clamp（ MB）,female shrimps with dark blue clamp（ FB）,male shrimps with light yellow clamp（ MY）,female shrimps with light yellow clamp（ FY）,were collected to measure their 22 morphometric traits.The effects of the morphometric traits on body weight were analyzed by path analysis,and the resulted correlation coefficients,path coefficients and determination coefficients were put for multiple aggression analysis. The results showed that the morphometric traits,i. e. six traits of FB group,eight traits of MB group,seven traits of FY group and six traits of MY group were highly significantly correlated with the correlation coefficients of the body weight（ P ＜ 0. 01）. Considering the correlation coefficients,path coefficients and readiness of traits measurement it is believed that the first abdominal segment width should be the first target trait for breeding of FB and that the body length be the first target trait for breeding of MB,MY and FY.