Abstract：The present study describes the correlation among carapace length (L1 ) ,carapace width (L2 ) , abdomen length (L3 ) ,abdomen width (L4 ) and body weight (m) of 4 species of crab caught from June 2008 to May 2009 in Bohai Bay with the methods of path analysis and step regression .The results showed that the correlation between the morphometric traits of each species of crab was significant (P <0 .01) , and the lnL2 had the most direct effect on ln m in Eucrate crenata and Portunus trituberculatus ,the direct path coefficient is 0 .661 and 0 .649 ,respectively ,while in Dorippe japonica and Charybdis japonica ,the most direct effect on lnm was is LnL1 ,the direct path coefficient was 0 .569 and 0 .659 ,respectively .And the equation of E .crenata lnm= -7 .622 +1 .972lnL2 +1 .143lnL1 -0 .083lnL4 (r=0 .940) ,D .japonica lnm= -7 .062+ 2 .971lnL1 (r= 0 .971) , P . trituberculatus Lnm= -8 .058+ 2 .238lnL1 + 0 .660lnL2 +0 .129lnL4(r=0 .986) ,C .japonica lnm= -8 .292+2 .081lnL2 +0 .964lnL1 (r=0 .986)were established using the stepwise regression method .
收稿日期: 2014-03-25
引用本文:
徐海龙,刘杨,谷德贤,乔秀亭. 渤海湾4种蟹类形态性状关系及对体质量的影响[J]. 水产科学, 2014, (3): 142-146.
XU Hailong,LIU Yang,GU Dexian,QIAO Xiuting. The Relationship between Morphometric Traits and Body Weight in 4 Species Crab f rom Bohai Bay. Fisheries Science, 2014, (3): 142-146.
